Portable intelligent cognitive style test instrument

Abstract

The invention provides a portable intelligent cognitive style test instrument, provides a multi-modal coupling algorithm, can perform coupling analysis on results tested by three traditional test methods, determines the cognitive style of a user to be tested, is not limited to field independence and field dependency any more, is a new evaluation system, and has a wide application prospect. Personal cognitive styles can be evaluated more perfectly and accurately.

Description

Technical Field

[0001] The present invention belongs to the technical field of human factors engineering, and particularly relates to a portable intelligent cognitive style testing instrument. Background Art

[0002] Cognitive Style refers to the characteristics of self-consistency that develop in a suitable manner around inherent personality traits during the information processing process. Cognitive style is one of the important factors affecting students' performance in many subjects. Existing research has shown that there is an inseparable relationship between a person's cognitive style and learning style. Cognitive style affects learners' preferences for learning environments and learning methods through learning style as a medium. There is a significant correlation between learners' field cognitive style, learning strategies, and learning motivation. In terms of Rigorous Mathematical Thinking (RMT) in solving mathematical problems, there are differences between students with reflective and impulsive cognitive styles. Junior and senior high school students with different cognitive styles also have significant differences in the study of geography and physics. In solving reasoning problems, field-independent students have good performance in verbal reasoning tests under low anxiety levels, while field-dependent students have better performance in verbal reasoning tests under high anxiety levels. In addition, there is also research indicating that in game-based learning tasks, learners with different cognitive styles have different learning outcomes under different information presentation forms. Thus, it can be seen that the learning effects of different students under different teaching designs are significantly different. Therefore, cognitive style testing is an important tool in personalized teaching tests, and obtaining students' cognitive styles has a very important impact on the construction of personalized teaching platforms.

[0003] Cognitive style, also known as cognitive pattern, refers to the individual differences shown when people organize and process information and experience. It is the habitual attitude and style that an individual often adopts in the processes of perception, memory, and thinking. In recent years, many researchers have paid more attention to cognitive style, which has led to many valuable research topics. At the same time, it has also made how to measure cognitive style become a key issue. The rod-and-frame test is a measurement method commonly used by many scholars, and the instrument used in the rod-and-frame test is mainly a rod-and-frame apparatus. The rod-and-frame apparatus is a visual experimental instrument. It is a relatively commonly used and complete instrument in the experiments of field-independent and field-dependent cognitive styles. Its structure includes a bright frame and a bright rod with uniform brightness in a dark visual field background. The rod is inside the frame, and both can be adjusted clockwise or counterclockwise separately, and there is a reading disk that shows the inclination angles of the frame and the rod with pointers at any time. The rod-and-frame apparatus can measure the degree to which an inclined frame affects the judgment of the verticality of a rod. The judgment of the subject is affected by the inclined frame, which is equivalent to the influence of changes in the surrounding environmental conditions. Therefore, the rod-and-frame apparatus can measure personality traits and the cognitive styles of different people through the cognitive style of the subject.

[0004] In the embedded figure test, the subject is required to accurately find the specified simple figure from a complex figure background, and the cognitive style of the subject is evaluated according to the number of simple figures found by the subject. However, we find that this method actually does not reflect how the subject completes the experiment process, but only shows us the result of this experiment. And as we all know, a person may have different cognitive styles at the same time, and different cognitive styles will also be correspondingly shown in different situations. Therefore, the embedded figure test has certain defects, but using the questionnaire method will make up for this deficiency to a certain extent.

[0005] For the design of the questionnaire, it is necessary to analyze specifically according to different questions, but generally, the following three principles should be followed. First, when measuring the field-independent / field-dependent cognitive style, the questionnaire can cover more comprehensively the three aspects that make up the field-independent / field-dependent style in the questionnaire design. Thus, we can fully consider all aspects involved in the characteristics of the field-independent / field-dependent style, and then design relevant questions. Second, when using the questionnaire to measure the field-independent / field-dependent cognitive style, different questions can be designed according to the respective characteristics of field independence and field dependence to measure the field-independent and field-dependent styles separately. When designing the questionnaire, the questionnaire can be divided into two parts. One part designs relevant questions according to the characteristics of field independence and is specifically used to measure whether the testee has the characteristics of field independence; the other part designs relevant questions according to the characteristics of field dependence and is specifically used to measure whether the testee has the characteristics of field dependence, effectively solving the either-or problem in the field-independent / field-dependent relationship caused by the lack of field-dependent measurement tools for the embedded figure. Third, when designing the questionnaire, we can provide different options for the testee after each question instead of only the two options of right or wrong. For example, we can provide options such as "very consistent - consistent - relatively consistent - uncertain - inconsistent" after each question for them to choose. Because the cognitive style is often not an absolute concept of "having" or "not having", but more a matter of degree difference, so we should provide options with different degrees for each question in the questionnaire to be closer to the essence of the style.

[0006] The main rod-and-frame apparatus products on the current market are basically composed of the following: 1. An observation tube placed on the platform. 2. A panel perpendicular to the platform, on which there is a frame and a rod. The inclination of the rod and the frame can be adjusted by a knob. 3. There is a semi-circular scale on the back of the panel, indicating the inclination of the frame and the rod. The minimum reading is 0.5°. 4. There is a level on the platform. After a large number of usage feedbacks on the widely used BD-V-503 model of the rod-and-frame apparatus, the following pain points are summarized: First, in terms of the front-end operation and hardware use of the rod-and-frame apparatus, the instrument has disadvantages such as a large appearance, inconvenient operation, and low data accuracy. Second, in terms of the back-end data collection and analysis of the rod-and-frame apparatus, there are also major drawbacks: Different from automated instruments, the data measured by the rod-and-frame apparatus needs to be manually recorded by the testee or the data strip is printed out, which easily leads to data loss and omission, and a large amount of manual input into the computer is required during data analysis, consuming time and energy. Moreover, for the data obtained from the experiment, the instrument cannot intuitively give the testee the result analysis, is prone to personal judgment, the result is not authoritative enough, and cannot well achieve the experimental purpose. Summary of the Invention

[0007] To solve the above problems, the present invention provides a portable intelligent cognitive style test instrument that can couple the data obtained from three traditional modes and can more comprehensively and accurately evaluate an individual's cognitive style.

[0008] A portable intelligent cognitive style testing instrument, comprising an instrument box body (1), a handle (2), a lens barrel (3), a contraction device (4), a PLC all-in-one machine (5), a telescopic slide rail (6), a first telescopic body (7), a second telescopic body (8), a main body (9) and an adjustment remote control;

[0009] The handle (2) is cut out on the short side surfaces of the two sides of the instrument box body (1); one end of the contraction device (4) is fixedly installed in the instrument box body (1), and the other end is fixedly connected to the main body (9), and is used to contract and compress the main body (9) into the instrument box body (1); both the first telescopic body (7) and the second telescopic body (8) are contracted into the main body (9) or extended out of the main body (9) through the telescopic slide rails (6) arranged on both sides of themselves; the PLC all-in-one machine (5) is embedded in the first telescopic body (7); the lens barrel (3) is embedded in the second telescopic body (8); the PLC all-in-one machine (5) is controlled by the adjustment remote control, so as to complete the rod and frame test, the embedded figure test and the questionnaire test; the PLC all-in-one machine (5) is used to determine the cognitive style of the user to be tested according to the results of the rod and frame test, the embedded figure test and the questionnaire test.

[0010] Further, the specific method for the PLC all-in-one machine (5) to determine the cognitive style of the user to be tested according to the results of the rod and frame test, the embedded figure test and the questionnaire test is as follows:

[0011] Step 1: Use the field dependence index to characterize the result of the rod and frame test, use the pattern separation efficiency to characterize the result of the embedded figure test, and use the cognitive style tendency value to characterize the result of the questionnaire test;

[0012] Step 2: Normalize the field dependence index, the pattern separation efficiency, and the cognitive style tendency value respectively;

[0013] Step 3: Obtain the weights of the field dependence index, the pattern separation efficiency, and the cognitive style tendency value according to the real-time reliability of the rod and frame test, the embedded figure test, and the questionnaire test;

[0014] Step 4: Perform weighted summation on the normalized field dependence index, the pattern separation efficiency, and the cognitive style tendency value according to the weights of the field dependence index, the pattern separation efficiency, and the cognitive style tendency value to obtain a comprehensive score S;

[0015] Step 5: Determine the confidence level of this test according to the normalized field dependence index, the pattern separation efficiency, and the cognitive style tendency value;

[0016] Step 6: Determine whether the comprehensive score S obtained from this test is valid according to the interval range where the confidence level of this test lies. Among them, if the confidence level < 0.7, it means that the comprehensive score S obtained from this test is invalid, and the user to be tested needs to retest; if 0.7 ≤ confidence level < 0.9, it means that the comprehensive score S obtained from this test is valid but needs to be corrected using the Bayesian correction method; if the confidence level ≥ 0.9, it means that the comprehensive score S obtained from this test is valid and does not need to be corrected.

[0017] Step 7: Determine the cognitive style of the user to be tested according to the interval range where the finally determined comprehensive score S lies.

[0018] Further, determining the cognitive style of the user to be tested according to the interval range where the finally determined comprehensive score S lies is specifically as follows:

[0019] If S > 62, it means that the cognitive style of the user to be tested is strongly analytical;

[0020] If 55 ≤ S ≤ 62, it means that the cognitive style of the user to be tested is mixed;

[0021] If S < 55, it means that the cognitive style of the user to be tested is strongly holistic.

[0022] Further, the calculation method of the field dependence index FDI is as follows:

[0023]

[0024] Among them, θ adjusted represents the angle at which the rod is finally adjusted when the user to be tested is performing the rod and frame test; θ target represents the set target correct angle; n represents the total number of valid tests when the user to be tested is performing the rod and frame test.

[0025] Further, the calculation method of the pattern separation efficiency PSE is as follows:

[0026]

[0027] Among them, N correct represents the number of target patterns correctly identified by the user to be tested in the embedded figure test; T total represents the total time taken by the user to be tested to complete the embedded figure test.

[0028] Further, the calculation method of the cognitive style tendency value Q is as follows:

[0029]

[0030] Among them, m represents the total number of items in the questionnaire test; ω i represents the weight of the i-th item determined by factor analysis; r iIt represents the score obtained by evaluating the selection of the user to be measured in the \(i\)-th item using the Likert 5-point scale.

[0031] Furthermore, the weights of the field dependence index, pattern separation efficiency, and cognitive style tendency value obtained according to the real-time reliability of the rod-frame test, embedded figure test, and questionnaire test are specifically as follows:

[0032] The method for obtaining the real-time reliability of the rod-frame test, embedded figure test, and questionnaire test is as follows:

[0033]

[0034] Among them, \(C1\) is the real-time reliability of the rod-frame test, \(C2\) is the real-time reliability of the rod-frame test, \(C3\) is the real-time reliability of the rod-frame test, \(\sigma\) angel is the variance of the angle adjustment of the rod body when the user to be measured conducts the rod-frame test, \(N\) correct is the number of target figures correctly identified by the user to be measured in the embedded figure test, \(T\) avg is the average time taken to complete the embedded figure test, \(N\) conflict is the total number of contradictory items generated by the user to be measured in the questionnaire test;

[0035] The weights of the field dependence index, pattern separation efficiency, and cognitive style tendency value are obtained as follows:

[0036]

[0037] Among them, \(\alpha\) is the set environmental adjustment factor.

[0038] Furthermore, the confidence Confidence of this test is determined according to the normalized field dependence index, pattern separation efficiency, and cognitive style tendency value, specifically as follows:

[0039]

[0040] Among them, \(r\) 棒-镶 represents the Pearson correlation coefficient between the field dependence index and the pattern separation efficiency, \(r\) 镶-问 represents the Pearson correlation coefficient between the pattern separation efficiency and the cognitive style tendency value, \(r\) 棒-问 represents the Pearson correlation coefficient between the field dependence index and the cognitive style tendency value.

[0041] Furthermore, the instrument box body (1) is made of an aviation-grade carbon fiber composite material and forms a bistable structure with negative Poisson's ratio characteristics through topological optimization design; the handle (2) on the short side of the instrument box body (1) is integrated with a pressure sensor, and the pressure sensor is used to automatically sense the holding state and activate the box body deformation mechanism.

[0042] Furthermore, the telescopic slide rail (6), the first telescopic body (7), and the second telescopic body (8) are all driven by shape memory alloys and are incorporated with an embedded inertial navigation unit; the embedded inertial navigation unit is used to automatically calculate the optimal telescopic paths of the telescopic slide rail (6), the first telescopic body (7), and the second telescopic body (8) according to the unfolding angle of the instrument box body (1); meanwhile, the surface of the telescopic slide rail (6) is coated with a self-lubricating nano-coating, and the friction coefficient is lower than 0.05.

[0043] Beneficial effects:

[0044] 1. The present invention provides a portable intelligent cognitive style test instrument, and proposes a multi-modal coupling algorithm, which can perform coupling analysis on the results obtained by three traditional test methods and determine the cognitive style of the user to be tested. It is no longer limited to field independence and field dependence, and is a new evaluation system that can more comprehensively and accurately evaluate an individual's cognitive style.

[0045] 2. The present invention provides a portable intelligent cognitive style test instrument. Firstly, by adopting adjustable-height table legs, it is convenient for users of various heights to use. Secondly, by installing a lens barrel cover at the lens barrel, the glasses can be directly attached to the lens barrel, thus largely eliminating the influence of light on the experiment. Finally, by using an insertable screen holder, the function of conducting multiple experiments with one instrument is realized. Therefore, the cognitive style test instrument of the present invention has the following characteristics compared with the previous instruments in terms of structure: smaller volume, more convenient contraction, better storage, and more conducive to carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is the overall structure diagram of the portable intelligent cognitive style test instrument provided by the present invention;

[0047] Figure 2 is the left view of the platform of the portable intelligent cognitive style test instrument provided by the present invention;

[0048] Figure 3 is the top view of the portable intelligent cognitive style test instrument provided by the present invention;

[0049] Figure 4 is the front view of the portable intelligent cognitive style test instrument provided by the present invention;

[0050] Figure 5 is the architecture diagram of hierarchically fusing the three test results provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0051] In order to enable those skilled in the art of the present technology to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0052] Regarding the existing instruments for cognitive style testing, the rod and frame apparatus is mainly used. There are many problems with the existing rod and frame apparatus, such as low test accuracy, insufficient leveling ability, and being easily affected by external light. Therefore, the present invention aims to solve the problems existing in the existing rod and frame apparatus and upgrade the existing cognitive style test function to achieve multiple tests on the same machine and realize multiple functions.

[0053] As Figures 1 to 4 shown, the present invention provides a portable intelligent cognitive style testing instrument, including an instrument box body (1), a handle (2), a lens barrel (3), a contraction device (4), a PLC all-in-one machine (5), a telescopic slide rail (6), a first telescopic body (7), a second telescopic body (8), a main body (9), and an adjustment remote control;

[0054] The handle (2) is cut out on the short side surfaces of the two sides of the instrument box body (1) for convenient carrying and storage; one end of the contraction device (4) is fixedly installed in the instrument box body (1), and the other end is fixedly connected to the main body (9) for contracting and compressing the main body (9) into the instrument box body (1); both the first telescopic body (7) and the second telescopic body (8) are contracted into the main body (9) or extended outside the main body (9) through the telescopic slide rails (6) provided on both sides of themselves; the PLC all-in-one machine (5) is embedded in the first telescopic body (7); the lens barrel (3) is embedded in the second telescopic body (8); the PLC all-in-one machine (5) is controlled by the adjustment remote control to complete the rod and frame test, the embedded figure test, and the questionnaire test; the PLC all-in-one machine (5) is used to determine the cognitive style of the user to be tested according to the results of the rod and frame test, the embedded figure test, and the questionnaire test.

[0055] Furthermore, the PLC all-in-one machine (5) is installed in a detachable instrument box body (1), and the PLC all-in-one machine can be taken out from the hollow of the machine box. The contraction device (4) is fixedly installed in the instrument box body (1), and the other end of the contraction device (4) is fixedly connected to the main body (9). The contraction device (4) ensures that the main body (9) can be contracted and compressed into the box body (1), making storage and carrying more convenient; that is to say, the contraction device (4) can be arbitrarily telescoped and lifted intelligently to facilitate adjustment according to the specific physical characteristics of the tester, which is more user-friendly; the instrument box body (1) is made of an aviation-grade carbon fiber composite material and forms a bistable structure with negative Poisson's ratio characteristics through topological optimization design; the bionic handle (2) on the short side surface of the box body integrates a pressure sensor, which can automatically sense the holding state and activate the box body deformation mechanism.

[0056] All telescopic mechanisms are driven by shape memory alloys and are equipped with embedded inertial navigation units, which can automatically calculate the optimal telescopic path according to the unfolding angle of the box body. The surface of the telescopic slide rail (6) is coated with a self-lubricating nano-coating, and the friction coefficient is lower than 0.05.

[0057] The lens barrel (3) adopts an adaptive optical module including a polarizing lens group with dynamic light filtering function. Cooperating with the pupil tracking camera, it can detect the visual axis deviation of the subject in real time and automatically compensate for the ambient light interference. The lens barrel assembly realizes stepless height adjustment through a magnetorheological damping bracket, and the adjustment accuracy reaches ±0.1 mm. At the same time, the lens barrel (3) is fixedly connected to the lens barrel height adjustment bracket and installed on the central plane of the base, and the base is fixedly connected to the base bracket. The lifting device is fixedly connected to the other end of the lens barrel (3), which is convenient for the tester to keep the position unchanged during the test.

[0058] In terms of control, the PLC all-in-one machine (5) is controlled by an adjustment remote control, eliminating the disadvantages of insensitive knobs and high delays, and is more intelligent. At the same time, it is equipped with a built-in level to detect whether the machine is leveled and can autonomously complete three-dimensional attitude calibration within 30 seconds, featuring intelligence.

[0059] It can be seen that the cognitive style test instrument of the present invention has the following characteristics compared with the previous instruments in terms of structure: smaller volume, more convenient contraction, better storage, and more conducive to carrying.

[0060] It should be noted that the portable intelligent cognitive style test instrument provided by the present invention designs three functional modules to measure the cognitive style tendency of the testee: the rod and frame test module, the embedded figure test module, and the questionnaire module. Among them, the rod and frame test module retains the functions of the original instrument and measures by allowing the testee to adjust the rod to the horizontal and vertical according to their own feelings; the embedded figure test module selects and improves on the existing test questions to evaluate the field independence cognitive style level of the testee by scores; the questionnaire module is a supplement and improvement to the above two functional modules, and the testee answers relevant questions about field independence and field dependence by designing a degree evaluation questionnaire.

[0061] The following details several specific implementation functions of this product.

[0062] 1. Rod and Frame Test

[0063] Step ① Instrument state adjustment: First, adjust the adjustable table legs to a comfortable height, then adjust the height of the host to a suitable height for the rod and frame test, and test whether it is leveled. If not, the machine will autonomously level through the built-in level.

[0064] Step ② User test: The user aligns their eyes with the lens barrel to start the experiment. During the experiment, the user needs to use the remote control to adjust the thin rod on the screen to the vertical state through their own perception. After multiple tests, count the angle between the thin rod and the vertical state after each test.

[0065] Step ③ Test result analysis: After the test, the user selects the one-key analysis function of the all-in-one machine, and the cognitive style of the tester is analyzed through a specific algorithm.

[0066] 2. Embedded figure test

[0067] Step ① Instrument state adjustment: First, adjust the adjustable table legs to a comfortable height, then adjust the height of the host to a suitable height for the rod-frame test, and test whether it is level. If it is not level, the machine will automatically level through the built-in level.

[0068] Step ② User test: Several complex figures will appear on the screen. The tester needs to find the simplest figures that make up them from these complex figures. In other words, which simple figures can draw the complex figures in one stroke. The answering method is multiple-choice questions, and the tester needs to select the correct answer from several options.

[0069] Step ③ Test result analysis: After the test, the user selects the one-key analysis function of the all-in-one machine, and the cognitive style of the tester is analyzed through a specific algorithm.

[0070] 3. Questionnaire test

[0071] Step ① Instrument state adjustment: First, adjust the adjustable table legs to a comfortable height, then adjust the height of the host to a suitable height for the rod-frame test, and test whether it is level. If it is not level, the machine will automatically level through the built-in level.

[0072] Step ② User test: After the user selects to start answering questions, multiple-choice questions will start to appear on the screen. The tester needs to use the remote control to answer the questions that appear on the screen in turn. In order to obtain more accurate results, there is a certain time limit for answering questions, so that the user needs to select the most accurate answer according to their first reaction. There are about 50 multiple-choice questions, and the user needs to answer all the questions.

[0073] Step ③ Test result analysis: After the test, the user selects the all-in-one machine and the user's cognitive style and personality traits will be obtained through a specific program.

[0074] Finally, the three results obtained are subjected to coupled calculation and brought into the new algorithm of the present invention, and the cognitive style and personality traits of people under the new algorithm standard system can be obtained. Through the mutual complementation of the above three experiments, the evaluation of people's cognitive style will be more comprehensive and accurate.

[0075] That is to say, the present invention proposes a multi-modal coupling algorithm, which can conduct an overall analysis of the results obtained by three traditional testing methods and determine the cognitive style of the testee. At this time, we will no longer be limited to field independence and field dependence, but propose a new evaluation system. The following details the process by which the PLC all-in-one machine (5) determines the cognitive style of the user to be tested based on the results of the rod and frame test, the embedded figure test, and the questionnaire test, as Figure 5 shown, and specifically includes the following steps:

[0076] Step 1: Use the field dependence index to characterize the results of the rod and frame test, use the pattern separation efficiency to characterize the results of the embedded figure test, and use the cognitive style tendency value to characterize the results of the questionnaire test;

[0077] Among them, the calculation method of the field dependence index FDI is:

[0078]

[0079] Among them, θ adjusted represents the angle at which the rod is finally adjusted when the user to be tested conducts the rod and frame test; θ target represents the set target correct angle, usually 90° vertical; n represents the total number of valid tests when the user to be tested conducts the rod and frame test, and the value range is 0 - 100%. The larger the value, the stronger the field dependence.

[0080] It should be noted that the present invention can use the rate of change of the error angle during frame rotation as the environmental interference coefficient, and use the standard deviation of the adjustment amplitude between consecutive tests as the strategy stability to evaluate whether there are abnormalities in the process of the rod and frame test.

[0081] The calculation method of the pattern separation efficiency PSE is:

[0082]

[0083] Among them, N correct represents the number of target figures correctly identified by the user to be tested in the embedded figure test; T total represents the total time taken by the user to be tested to complete the embedded figure test. It should be noted that the pattern separation efficiency PSE can evaluate the user's analysis ability.

[0084] The calculation method of the cognitive style tendency value Q is:

[0085]

[0086] Among them, m represents the total number of items in the questionnaire test; ω i represents the weight of the i-th item determined by factor analysis, and the value range is -1 to +1; r iIt represents the score obtained by evaluating the selection of the user to be measured in the \(i\)-th item using the Likert 5-point scale, and the value range is from 1 to 5 points.

[0087] Step 2: Normalize the field dependence index, pattern separation efficiency, and cognitive style tendency value respectively;

[0088] Among them, the normalization process uses the improved T-score transformation:

[0089]

[0090] x i is FDI or PSE or Q; \(\mu\) i is the norm mean. Among them, for the rod and frame test, it takes 15%, for the embedded figure test, it takes 1.8, and for the questionnaire test, it takes 0; \(\sigma\) i is the norm standard deviation. For the rod and frame test, it takes 8%, for the embedded figure test, it takes 0.6, and for the questionnaire test, it takes 0.3.

[0091] Step 3: Obtain the weights of the field dependence index, pattern separation efficiency, and cognitive style tendency value according to the real-time reliability of the rod and frame test, the embedded figure test, and the questionnaire test. Specifically:

[0092] The real-time reliability of the rod and frame test, the embedded figure test, and the questionnaire test is obtained as follows:

[0093]

[0094] Among them, \(C1\) is the real-time reliability of the rod and frame test, which is used to evaluate the operation stability of the user to be measured in the rod and frame test; \(C2\) is the real-time reliability of the embedded figure test, which is used to evaluate the cognitive efficiency of the user to be measured in the embedded figure test; \(C3\) is the real-time reliability of the questionnaire test, which is used to evaluate the answer consistency of the user to be measured in the questionnaire test; \(\sigma\) angel is the variance of the angle adjustment of the rod body when the user to be measured is performing the rod and frame test; \(N\) correct is the number of target figures correctly identified by the user to be measured in the embedded figure test; \(T\) avg is the average time taken to complete the embedded figure test; \(N\) conflict is the total number of contradictory items generated by the user to be measured in the questionnaire test;

[0095] The weights of the field dependence index, pattern separation efficiency, and cognitive style tendency value are obtained as follows:

[0096]

[0097] Among them, \(W1\) is the weight of the field dependence index, \(W2\) is the weight of the pattern separation efficiency, \(W3\) is the weight of the cognitive style tendency value, and \(\alpha\) is the set environmental adjustment factor, which defaults to 1.5.

[0098] Step 4: Perform a weighted sum of the normalized field-dependence index, pattern separation efficiency, and cognitive style preference value according to the weights of the field-dependence index, pattern separation efficiency, and cognitive style preference value to obtain a comprehensive score

[0099] Step 5: Determine the confidence Confidence of this test based on the normalized field-dependence index, pattern separation efficiency, and cognitive style preference value, specifically:

[0100]

[0101] where r 棒-镶 represents the Pearson correlation coefficient between the field-dependence index and the pattern separation efficiency, and r 镶-问 represents the Pearson correlation coefficient between the pattern separation efficiency and the cognitive style preference value, and r 棒-问 represents the Pearson correlation coefficient between the field-dependence index and the cognitive style preference value.

[0102] Step 6: Determine whether the comprehensive score S obtained from this test is valid according to the interval range where the confidence of this test lies. Among them, if the confidence < 0.7, it means that the comprehensive score S obtained from this test is invalid, and the user to be tested needs to retest; if 0.7 ≤ confidence < 0.9, it means that the comprehensive score S obtained from this test is valid but needs to be corrected using the Bayesian correction method; if the confidence ≥ 0.9, it means that the comprehensive score S obtained from this test is valid and does not need to be corrected;

[0103] Step 7: Determine the cognitive style of the user to be tested according to the interval range where the finally determined comprehensive score S lies, specifically as follows:

[0104] If S > 62, it means that the cognitive style of the user to be tested is strongly analytical;

[0105] If 55 ≤ S ≤ 62, it means that the cognitive style of the user to be tested is mixed;

[0106] If S < 55, it means that the cognitive style of the user to be tested is strongly holistic.

[0107] In summary, the new device of the present invention designs three functional modules to measure the cognitive style tendency of the subject: the rod-and-frame test module, the embedded figure test module, and the questionnaire module. Among them, the rod-and-frame test module retains the functions of the original instrument and measures by asking the subject to adjust the rod to the horizontal and vertical according to their own feelings; the embedded figure test module selects and improves on the basis of the existing test questions to evaluate the level of the subject's field-independent cognitive style with scores; the questionnaire module is a supplement and improvement to the above two functional modules, and asks the subject to answer relevant questions about field independence and field dependence by designing a degree evaluation questionnaire; finally, with the mutual complementation of the above three experiments, the judgment of a person's cognitive style will be more comprehensive and accurate.

[0108] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can certainly make various corresponding changes and deformations according to the present invention, but these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

Claims

1. A portable intelligent cognitive style testing instrument, characterized in that: It comprises an instrument box (1), a handle (2), a lens barrel (3), a retracting device (4), a PLC integrated machine (5), a telescopic slide rail (6), a first telescopic body (7), a second telescopic body (8), a main body (9) and an adjustment remote controller; Handles (2) are cut out of the two short sides of the instrument case (1); one end of the retracting device (4) is fixedly installed in the instrument case (1), and the other end is fixedly connected to the main body (9), and is used to retract and compress the main body (9) into the instrument case (1); the first telescopic body (7) and the second telescopic body (8) are both retracted into the main body (9) or extended out of the main body (9) through telescopic slide rails (6) arranged on both sides of the first telescopic body (7); the PLC all-in-one machine (5) is embedded in the first telescopic body (7); the lens barrel (3) is embedded in the second telescopic body (8); the PLC all-in-one machine (5) is controlled by an adjustment remote control, thereby completing a rod frame test, a mosaic figure test and a questionnaire test; the PLC all-in-one machine (5) is used to determine the cognitive style of the user to be tested according to the rod frame test results, the mosaic figure test results and the questionnaire test results.

2. A portable intelligent cognitive style testing instrument as claimed in claim 1, characterized in that: The PLC integrated machine (5) is used to determine the cognitive style of the user to be tested according to the results of the stick frame test, the mosaic pattern test and the questionnaire test. The specific method is: Step 1: Use the field dependence index to characterize the results of the stick-frame test, use the pattern separation efficiency to characterize the results of the mosaic test, and use the cognitive style tendency value to characterize the results of the questionnaire test; Step 2: Normalize the field dependence index, mode separation efficiency, and cognitive style tendency value respectively; Step 3: Obtain the weights of field dependence index, pattern separation efficiency, and cognitive style tendency value based on the real-time reliability of the rod-frame test, mosaic test, and questionnaire test; Step 4: According to the weights of the field dependence index, pattern separation efficiency, and cognitive style tendency value, the normalized field dependence index, pattern separation efficiency, and cognitive style tendency value are weighted and summed to obtain a comprehensive score S; Step 5: Determine the confidence of this test based on the normalized field dependence index, pattern separation efficiency, and cognitive style tendency value; Step 6: Determine whether the comprehensive score S obtained in this test is valid according to the confidence interval of this test. If the confidence is <0.7, it means that the comprehensive score S obtained in this test is invalid and the user to be tested needs to be retested; if 0.7≤confidence<0.9, it means that the comprehensive score S obtained in this test is valid but needs to be corrected by the Bayesian correction method; if the confidence is ≥0.9, it means that the comprehensive score S obtained in this test is valid and does not need to be corrected; Step 7: Determine the cognitive style of the user to be tested based on the range of the final comprehensive score S.

3. A portable intelligent cognitive style testing instrument as claimed in claim 2, characterized in that: According to the range of the final comprehensive score S, the cognitive style of the user to be tested is determined as follows: If S>62, it means that the cognitive style of the user to be tested is strongly analytical; If 55≤S≤62, it means that the cognitive style of the user to be tested is mixed; If S<55, it means that the cognitive style of the user to be tested is a strong holistic one.

4. A portable intelligent cognitive style testing instrument as claimed in claim 2, characterized in that: The calculation method of the market dependence index FDI is: Among them, θ adjusted Indicates the angle to which the stick is finally adjusted when the user is doing the stick frame test; θ target It indicates the correct angle of the set target; n indicates the total number of valid tests of the user to be tested when performing the stick-frame test.

5. A portable intelligent cognitive style testing instrument as claimed in claim 2, characterized in that: The calculation method of mode separation efficiency PSE is: Among them, N correct Indicates the number of target graphics correctly identified by the user in the mosaic graphics test; T total Indicates the total time taken by the user to complete the mosaic graphics test.

6. A portable intelligent cognitive style testing instrument as claimed in claim 2, characterized in that: The calculation method of cognitive style tendency value Q is: Where m represents the total number of items in the questionnaire test; ω i represents the weight of the ith item determined by factor analysis; r i It represents the score obtained by using Likert 5-point scale to evaluate the user's choice in the i-th question.

7. A portable intelligent cognitive style testing instrument as claimed in claim 2, characterized in that: According to the real-time reliability of the rod-frame test, mosaic test, and questionnaire test, the weights of the field dependence index, pattern separation efficiency, and cognitive style tendency value are obtained as follows: The real-time reliability of the rod-frame test, mosaic test, and questionnaire test is obtained as follows: Among them, C1 is the real-time reliability of the stick-frame test, C2 is the real-time reliability of the stick-frame test, C3 is the real-time reliability of the stick-frame test, σ angel is the angle adjustment variance of the stick when the user is doing the stick frame test, N correct is the number of target graphics correctly identified by the user in the mosaic graphics test, T avg is the average time required to complete the mosaic test, N conflict The total number of contradictory items generated by the users to be tested in the questionnaire test; The weights of obtaining the field dependence index, mode separation efficiency, and cognitive style tendency value are as follows: Among them, α is the set environmental adjustment factor.

8. A portable intelligent cognitive style testing instrument as claimed in claim 2, characterized in that: According to the normalized field dependence index, pattern separation efficiency, and cognitive style tendency value, the confidence of this test is determined as follows: Among them, r 棒-镶 represents the Pearson correlation coefficient between the field dependence index and the mode separation efficiency, r 镶-问 represents the Pearson correlation coefficient between pattern separation efficiency and cognitive style tendency value, r 棒-问 Represents the Pearson correlation coefficient between the field dependence index and the cognitive style tendency value.

9. A portable intelligent cognitive style testing instrument as claimed in claim 1, characterized in that: The instrument case (1) is made of aviation-grade carbon fiber composite material, and a bistable structure with negative Poisson's ratio characteristics is formed through topological optimization design; the handle (2) on the short side of the instrument case (1) is integrated with a pressure sensor, and the pressure sensor is used to automatically sense the holding state and activate the case deformation mechanism.

10. The portable intelligent cognitive style testing instrument according to claim 1, characterized in that: The telescopic slide rail (6), the first telescopic body (7), and the second telescopic body (8) are all driven by shape memory alloys and have an embedded inertial navigation unit; the embedded inertial navigation unit is used to automatically calculate the optimal telescopic path of the telescopic slide rail (6), the first telescopic body (7), and the second telescopic body (8) according to the unfolding angle of the instrument box (1); at the same time, the surface of the telescopic slide rail (6) is covered with a self-lubricating nano coating, and the friction coefficient is less than 0.05.

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