Method for determining the favorability of textile products

Abstract

This invention provides a method for determining favorability towards textile products that can capture favorability towards textile products in a more multifaceted and accurate manner. [Solution] A method for determining the likeability of a textile product according to one embodiment comprises the steps of: obtaining psychological indicators of a subject from saliva secreted from the subject's body;, after obtaining psychological indicators, bringing the subject's body into contact with a textile product;, after bringing the subject into contact with a textile product, obtaining psychological indicators of the subject again from saliva secreted from the subject's body; and determining the subject's likeability of the textile product from the psychological indicators obtained in the step of obtaining psychological indicators and the psychological indicators obtained in the step of obtaining psychological indicators again.

Description

Technical Field

[0001] The present disclosure relates to a textile product favorability determination method for determining a subject's favorability toward a textile product. Background Art

[0002] Patent Document 1 describes a method for evaluating or searching for fabric cloth or a processed product thereof. In the search method, the soft texture brought by the material of the fabric cloth and the treatment for imparting the texture to the fabric cloth are evaluated or searched. This search method comprises the steps of bringing a human skin into contact with a test article, measuring the amount of oxytocin in a biological sample collected from a human, comparing the amount of oxytocin with a reference value, and evaluating or selecting a test article that increases the amount of oxytocin as a fabric cloth exhibiting a soft feeling or a processed product thereof. Prior Art Documents Patent Documents

[0003] Patent Document 1 Japanese Unexamined Patent Application Publication No. 2021-67669 Summary of Invention Problems to be Solved by the Invention

[0004] Meanwhile, in the determination of the favorability of textile products, it is required to determine the favorability from more multifaceted perspectives. Furthermore, since a person's psychological state may change in various ways when the person comes into contact with a textile product, it is required to determine the person's psychological state with high accuracy.

[0005] An object of the present disclosure is to provide a textile product favorability determination method capable of grasping the favorability toward a textile product from more multifaceted perspectives and with high accuracy. Means for Solving the Problems

[0006] (1) The method for determining the favorability of a textile product according to this disclosure comprises the steps of: obtaining psychological indicators of a subject from saliva secreted from the subject's body;, after obtaining psychological indicators, bringing the subject's body into contact with a textile product;, after bringing the subject into contact with a textile product, obtaining psychological indicators of the subject again from saliva secreted from the subject's body; and determining the subject's favorability towards the textile product from the psychological indicators obtained in the step of obtaining psychological indicators and the psychological indicators obtained in the step of obtaining psychological indicators again.

[0007] This method for determining liking for textile products obtains psychological indicators from the subject's saliva. It is known that the composition of human saliva changes significantly depending on a person's psychological state. Therefore, by obtaining psychological indicators from the subject's saliva, it is possible to accurately grasp their liking for textile products. In this method, after measuring saliva, the subject's body comes into contact with the textile product, and then psychological indicators are obtained again from the subject's saliva. The subject's liking for the textile product is then determined from the psychological indicators before and after contact with the textile product. Therefore, by accurately grasping the subject's psychological indicators before and after contact with the textile product, it is possible to understand their liking for the textile product from a more multifaceted perspective.

[0008] (2) In (1) above, the method for determining the preference for textile products may include, before the step of obtaining psychological indicators, a step of preparing multiple textile products and a step of extracting the subject's preferred textile product from the multiple textile products. In the contact step, the subject's body may be brought into contact with the textile product extracted in the extraction step. In this case, by extracting the subject's preferred textile product from multiple textile products in advance, it is possible to more reliably suggest a textile product that the subject likes.

[0009] (3) In the step of contact in (1) or (2) above, the subject's cheek may be brought into contact with the textile product. The cheek is known to be a part of the body that is more easily influenced by a person's emotions compared to other parts of the body. Therefore, by bringing the cheek into contact with the textile product, changes in psychological indicators can be captured with higher accuracy compared to when a part of the body other than the cheek is brought into contact with the textile product. Thus, the subject's liking for the textile product can be grasped with higher accuracy.

[0010] (4) In any of (1) to (3) above, the textile product may be at least one of a pillowcase and a towel. Pillowcases and towels are textile products that people are likely to use on a daily basis and are used frequently. Therefore, by determining the subject's preference for at least one of the pillowcase and towel, it is possible to further increase the subject's satisfaction with the evaluation results.

[0011] (5) In any of the above steps (1) to (4), the psychological indicator may be obtained from amylase contained in the saliva in the step of obtaining the psychological indicator and the step of obtaining the psychological indicator again. The amount of amylase contained in saliva is known to correlate with a person's stress level. Therefore, by obtaining the psychological indicator from the amylase in the saliva, it is possible to grasp the change in the subject's stress level before and after touching textile products. [Effects of the Invention]

[0012] According to this disclosure, it is possible to understand favorability towards textile products in a more multifaceted and accurate manner. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is a flowchart showing an example of the steps for a method for determining the likeability of textile products according to an embodiment. [Figure 2] Figure 2 is a graph showing examples of psychological indicators of subjects after contact with textile products. [Figure 3]Figure 3 is a chart showing an example of the change in psychological indicators of subjects before and after contact with textile products. [Figure 4] Figure 4 is a graph showing an example of the change in psychological indicators of subjects before and after contact with textile products. [Figure 5] Figure 5 is a chart showing an example of the change in psychological indicators of subjects before and after contact with textile products. [Figure 6] Figure 6 is a graph showing an example of the change in psychological indicators of subjects before and after contact with textile products. [Figure 7] Figure 7 is a chart showing an example of the change in psychological indicators of subjects before and after contact with textile products. [Modes for carrying out the invention]

[0014] The embodiments of the textile product preference determination method according to this disclosure will be described below with reference to the drawings. In the description of the drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant explanations are omitted as appropriate. For the sake of ease of understanding, some parts of the drawings may be simplified or exaggerated, and the dimensional ratios, etc., are not limited to those shown in the drawings.

[0015] The method for determining the favorability of textile products is a method for determining the favorability of subjects towards textile products. "Textile products" refers to items made of fibers. "Textile products" may include, for example, pillowcases, towels, blankets, interlinings, blankets, futons, carpets, clothing, cushions, or sheets.

[0016] In the textile product preference determination method according to this embodiment, the subject's preference for a textile product is determined by the subject's skin coming into contact with the textile product. The "subject" is the person whose preference for the textile product is to be determined. The "subject" may be someone looking for a preferred textile product, someone considering purchasing a textile product, or someone who actually uses a textile product.

[0017] "Preference level" indicates the degree of fondness. A higher preference level for a textile product indicates greater fondness for the textile product, and a lower preference level for a textile product indicates greater dislike for the textile product. The "preference level" is, for example, a stress level and a happiness level. In this case, the higher the preference level, the lower the stress level and the higher the happiness level.

[0018] In the textile product preference level determination method according to the present embodiment, a psychological index of a subject is obtained from saliva. The "psychological index" refers to an index of the psychological state of the subject. The "psychological index" is, for example, a stress level, a sense of happiness, a depression level, or an optimism level. In the present embodiment, an example in which the "psychological index" is a stress level or a sense of happiness will be described.

[0019] Figure 1 is a flowchart showing an example of the steps of the textile product preference level determination method according to the present embodiment. In the textile product preference level determination method according to the present embodiment, the preference level of the subject for each of a pillowcase, a first towel, and a second towel is determined as textile products. The pillowcase is a general pillowcase, and the first towel is a general towel.

[0020] The pillowcase (general pillowcase) is formed of a plain-woven fabric with a flat and smooth surface. That is, the pillowcase is made of broadcloth. The pillowcase is a pillowcase obtained by subjecting broadcloth to soft finishing. Both the warp and weft yarns of the pillowcase are 40 count. The total number of yarns per inch of the pillowcase, including both warp and weft yarns, is 180. The first towel (general towel) is a sheared towel. That is, the first towel is a towel with sheared piles. A print is applied to the first towel.

[0021] In the present embodiment, the preference level of the subject for a plurality of second towels is determined. The plurality of second towels are towels having characteristics different from those of the first towel. For example, the second towel is a towel softer than the first towel. The second towel may be a towel with a higher recommendation level than the first towel.

[0022] In this embodiment, the following eight types of towels, towel 1, towel 2, towel 3, towel 4, towel 5, towel 6, towel 7, and towel 8, are used as multiple second towels. (Towel 1) Towel 1 is a towel that is more elastic than Towel 1. Towel 1 is made of thicker yarn with less twist than Towel 1. Towel 1 is characterized by its springy elasticity and moist softness. (Towel 2) Towel 2 is a towel that is fluffier than Towel 1. Towel 2 is made of yarn with less twist and no twist than the yarn of Towel 1. Towel 2 is characterized by its soft and fluffy volume. (Towel 3) Towel 3 is a towel that offers a more delightful softness than Towel 1. The pile yarn of Towel 3 is made from Sea Island cotton. Towel 3 is characterized by its luxurious softness. (4 towels) Towel 4 is a towel that is fluffier than Towel 1. Towel 4 is a long pile towel. The pile yarn of Towel 4 includes untwisted yarn and yarn that is thinner and softer than the yarn of Towel 1. (5 towels) Towel 5 is a towel that is smoother than Towel 1. Towel 5 is a towel that has a gauze portion. The gauze portion of Towel 5 is made of extra-long staple cotton. This extra-long staple cotton is American-made, has a high fineness, and is soft to the touch. (6 towels) Towel 6 is lighter than Towel 1. The pile yarn of Towel 6 is untwisted yarn. (7 towels) Towel 7 is a towel that is softer than Towel 1. The pile yarn on one side of Towel 7 is made of extra-long staple cotton (extra-long staple cotton from India), while the pile yarn on the other side of Towel 7 is made of untwisted yarn. (8 towels) Towel 8 is a towel that is fluffier than Towel 1. Towel 8 is made of yarn that has been loosened through a special process.

[0023] In the textile product preference determination method according to this embodiment, first, multiple textile products are prepared (step of preparing textile products). For example, the pillowcase, first towel, and multiple second towels mentioned above are prepared. The multiple second towels are towel 1, towel 2, towel 3, towel 4, towel 5, towel 6, towel 7, and towel 8.

[0024] The subject's preferred textile product is extracted from multiple textile products (extraction process, step S1). In this embodiment, psychological indicators are determined for 11 subjects (6 men and 5 women) aged 20 to 60. In the extraction of textile products, a second towel to be used for obtaining psychological indicators is selected from multiple second towels. The subject's preferred second towel is selected from towel 1, towel 2, towel 3, towel 4, towel 5, towel 6, towel 7, and towel 8.

[0025] For example, participants are asked to touch textile products to select their preferred products. Specifically, each participant is asked to touch towels 1, 2, 3, 4, 5, 6, 7, and 8, and rate each of them on a 5-point scale as "relaxing," "comfortable," "would like to use on the face," and "makes me feel happy." A second towel with the highest rating for each participant is then selected. As an example, three second towels are selected from the eight second towels.

[0026] Next, each subject is instructed to rest (Step S2). At this time, each subject is instructed to sit in a chair and rest. The resting time is, for example, 1 minute. This resting (Step S2), the task (Step S3), acquisition of psychological indicators (Step S4), placement of the body on the textile product (Step S5), and acquisition of psychological indicators (Step S6) are all carried out in a room with a temperature of 23°C and a humidity of 60%RH.

[0027] After allowing each subject to rest, they are given a task to complete (Step S3). In Step S3, for example, each subject is given a certain amount of stress by being made to perform a numerical search continuously for a certain period of time. In the numerical search, the subject is asked to continuously find the minimum or maximum value among several numbers displayed on the terminal's display.

[0028] More specifically, the top of the display shows whether to search for the maximum or minimum value, and the bottom of the display shows multiple numbers, from which the participant is instructed to select the maximum or minimum value. As an example, each participant is given a task to find the maximum or minimum value from 15 numbers for 30 seconds. The results of the task are not given to the participant. This is to prevent any disturbance to the participant's psychological state as a result of providing feedback.

[0029] After the task, psychological indicators are obtained for each subject (step S4). At this time, psychological indicators are obtained from the saliva secreted from the subject's body (step of obtaining psychological indicators). For example, multiple psychological indicators are obtained from each subject. In this embodiment, psychological indicators for each subject are obtained by objective evaluation as well as by subjective evaluation. Subjective evaluation is an evaluation of the psychological indicators given to the subject by questionnaire.

[0030] Subjective evaluation involves asking each participant to select the statement that best describes their current state, and then having them rate their response to "feeling stressed," "feeling relaxed," and "feeling happy" on a four-point scale: "strongly agree (4 points)," "somewhat agree (3 points)," "somewhat disagree (2 points)," and "strongly disagree (1 point)." Objective evaluation is conducted by analyzing the components contained in saliva.

[0031] For example, in the process of obtaining psychological indicators, psychological indicators are obtained from the amylase contained in the subject's saliva. In this embodiment, multiple psychological indicators are obtained for each subject by measuring the concentration of amylase and oxytocin contained in the saliva. The concentration of salivary amylase is known to correlate with stress levels, and the stress level of each subject is calculated by measuring the concentration of salivary amylase. Oxytocin is one of the happiness hormones, and the concentration of oxytocin in saliva is known to correlate with feelings of happiness. For example, the feelings of happiness of each subject are calculated by measuring the concentration of oxytocin in saliva.

[0032] An example of a method for measuring the concentration of amylase in saliva is described below. The concentration of amylase in saliva can be measured, for example, using a salivary amylase monitor. In this case, a sheet for the salivary amylase monitor is placed under the subject's tongue to collect saliva, and the sheet is placed in a holder, which is then inserted into the main body of the salivary amylase monitor. The main body is then operated to start measuring the amylase concentration, and the measurement result is displayed on the monitor of the main body. In this way, the concentration of amylase in saliva can be easily measured.

[0033] This section describes an example of a method for measuring the concentration of oxytocin in saliva. For example, the concentration of oxytocin in saliva can be measured using ELISA with a straw and a closed-bottom cryotube. In this method, a straw is placed inside the cryotube, saliva is expelled into the tube by putting the mouth to the straw, the lid of the cryotube is closed, and the cryotube is frozen at -20°C. The frozen cryotube is then sent to a testing laboratory. The laboratory performs the ELISA measurement, and the oxytocin concentration measurement results are sent back. Measuring the concentration of oxytocin in saliva takes longer than measuring the concentration of amylase.

[0034] After obtaining the psychological indicators of each subject, each subject's body is brought into contact with a textile product (contact step). At this time, each subject's body is placed on the textile product (step S5). First, a pillow is prepared by covering a pillow core with either a pillowcase, a first towel, or the extracted second towel (pillow preparation step). Specifically, the process of covering one pillow core with a pillowcase and bringing it into contact is performed, then the process of covering the same pillow core with a first towel and bringing it into contact is performed, and then the process of covering the same pillow core with a second towel and bringing it into contact is performed. In other words, the number of pillow cores is kept at one, and the process of bringing them into contact is performed by changing only the test sample (pillowcase, first towel, second towel).

[0035] In the contact process, the subject's body is brought into contact with the textile products extracted in the extraction process. For example, since three second towels were extracted, in the pillow preparation process, five types of materials—a pillowcase, a first towel, and three second towels—are attached to a single prepared pillow core material each time, and the process of bringing each of them into contact with the subject is performed.

[0036] In the contact process, the subject's cheek is brought into contact with the textile product. For example, each subject's cheek is placed against each of the multiple types of pillows prepared above. At this time, each subject is fitted with an eye mask so that they cannot distinguish between the types of textile products, and then each subject is instructed to place their cheek against the product. The time the cheek is in contact with the textile product (pillow) is, for example, one minute. For example, the order in which the cheeks are placed against the pillows is randomized for each subject, and the contact process is carried out continuously with breaks in between.

[0037] After the contact process, psychological indicators are acquired again (step S6). That is, after the process of contacting the textile product, the subject's psychological indicators are acquired again from the saliva secreted from the subject's body (re-acquisition process). For example, the content of the re-acquisition process is the same as the content of the initial acquisition process.

[0038] In this case, as mentioned above, psychological indicators for each subject are obtained through objective evaluation, as well as through subjective evaluation. Figure 2 shows an example of the results of the subjective evaluation. Figure 2 shows the results for "feeling happy." The "second towel" in Figure 2 represents the second towel with the highest evaluation score among the three second towels mentioned above.

[0039] As shown in Figure 2, the results of the subjective evaluation show that the percentage of subjects who answered "strongly agree" or "somewhat agree" to the item "feeling happy" was 9% for the pillowcase, 36% for the first towel, and 100% for the second towel. Thus, it is shown that subjects are most likely to feel happy when their cheeks are placed against the second towel. In the process of obtaining psychological indicators again, subjective evaluations are performed for each subject, and multiple psychological indicators are obtained for each subject by measuring the concentration of amylase and oxytocin in their saliva. Then, the stress level and happiness level of each subject are calculated.

[0040] Next, the subject's liking for the textile product is determined from the psychological indicators obtained in the process of obtaining psychological indicators, and the psychological indicators obtained in the process of obtaining psychological indicators again (the process of determining liking, step S7). That is, the subject's liking for the pillow is determined by comparing the subject's psychological indicators before placing their cheek on the pillow and the subject's psychological indicators after placing their cheek on the pillow.

[0041] Figure 3 shows an example of the results of determining subjects' liking for textile products. The "change" in Figure 3 indicates the difference between the subjective evaluation after placing their cheek on the pillow and the subjective evaluation before placing their cheek on the pillow. More specifically, for the item "feeling happy," it shows the difference between "strongly agree (4 points)," "somewhat agree (3 points)," "somewhat disagree (2 points)," and "strongly disagree (1 point)" before and after placing their cheek on the pillow.

[0042] As shown in Figure 3, the scores above increased after placing the cheek against the second towel compared to placing it against the pillowcase and the first towel, indicating that participants felt happier more often. Figure 3 also shows that all participants had the highest preference for the second towel.

[0043] Figure 4 is a graph showing an example of the results of determining subjects' liking for textile products. The vertical axis in Figure 4 shows the change in stress level before and after placing the cheek on the pillow, with the higher the bar in the graph, the higher the stress level. In Figure 4, the change in stress level shows the change in salivary amylase concentration before and after placing the cheek on the pillow. The results in Figure 4 show that when the cheek was placed on the pillowcase and on the first towel, the stress level remained unchanged or increased slightly, while when the cheek was placed on the second towel, the stress level decreased significantly.

[0044] Figure 5 is a chart showing an example of the results of determining subjects' liking for textile products. In Figure 5, "Change" indicates the change in salivary amylase concentration before and after placing the cheek against the pillow. The results shown in Figure 5 show that the level of stress varied among subjects when they placed their cheek against the pillowcase and when they placed their cheek against the first towel. In contrast, when they placed their cheek against the second towel, the level of stress decreased for almost all subjects, and it can be seen that the level of stress did not increase significantly.

[0045] Figure 6 is a graph showing an example of the results of determining subjects' liking for textile products. The graph in Figure 6 shows the change in happiness before and after placing the cheek on the pillow, with the higher the bar in the graph, the higher the happiness level. In Figure 6, the change in happiness level represents the change in salivary oxytocin concentration before and after placing the cheek on the pillow. The results in Figure 6 show that happiness levels are significantly higher when the cheek is placed on the second towel compared to when the cheek is placed on the pillowcase or the first towel.

[0046] Figure 7 is a chart showing an example of the results of determining subjects' liking for textile products. In Figure 7, "Change" indicates the change in salivary oxytocin concentration before and after placing the cheek against the pillow. The results in Figure 7 show that there was variation in salivary oxytocin concentration among subjects when they placed their cheek against the pillowcase and when they placed their cheek against the first towel, and that some subjects experienced a significant decrease in salivary oxytocin concentration (happiness level).

[0047] In contrast, when the subjects placed their cheeks against the second towel, the salivary oxytocin concentration increased in most subjects, and no subjects experienced a significant decrease in salivary oxytocin concentration. As described above, the series of steps is completed after determining the subjects' liking for the textile product.

[0048] The effects of the textile product preference determination method according to this embodiment will be explained. In the textile product preference determination method according to this embodiment, psychological indicators of the subject are obtained from the saliva secreted from the subject's body. It is known that the components of human saliva change significantly depending on the person's psychological state. Therefore, by obtaining the subject's psychological state from the subject's saliva, it is possible to grasp their preference for textile products with high accuracy.

[0049] The method for determining favorability towards textile products involves measuring saliva, having the subject's body come into contact with the textile product, and then obtaining psychological indicators from the subject's saliva. The subject's favorability towards the textile product is then determined from the psychological indicators before and after contact with the textile product. Therefore, by accurately capturing the subject's psychological indicators before and after contact with the textile product, it is possible to easily obtain psychological indicators and have the subject come into contact with the textile product, as well as to understand favorability towards the textile product from a more multifaceted perspective.

[0050] A method for determining the likeability of textile products may include, before obtaining psychological indicators, a step of preparing multiple textile products and a step of extracting the subject's preferred textile product from the multiple textile products. In the contact step, the subject's body may be brought into contact with the textile product extracted in the extraction step. In this case, by extracting the subject's preferred textile product from multiple textile products in advance, it is possible to more reliably suggest a textile product that the subject likes.

[0051] In the contact process, the subject's cheek may be brought into contact with the textile product. The cheek is known to be a part of the body that is more easily influenced by a person's emotions compared to other parts of the body. Therefore, by bringing the cheek into contact with the textile product, changes in psychological indicators can be captured with higher accuracy compared to when other parts of the body are brought into contact with the textile product. Consequently, the subject's liking for the textile product can be grasped with higher accuracy.

[0052] As mentioned above, the textile product may be at least one of a pillowcase and a towel (for example, the first towel and the second towel mentioned above). Pillowcases and towels are textile products that people are likely to use on a daily basis and are used frequently. Therefore, by determining the subject's preference for at least one of the pillowcase and towel, it is possible to further increase the subject's satisfaction with the evaluation results.

[0053] In the process of obtaining psychological indicators and the process of obtaining psychological indicators again, the subject's psychological indicators may be obtained from amylase contained in saliva. The amount of amylase contained in saliva is known to correlate with a person's stress level. Therefore, by obtaining the subject's psychological indicators from salivary amylase, it is possible to understand the change in the subject's stress level before and after touching textile products.

[0054] In this embodiment, in both the step of obtaining psychological indicators and the step of obtaining psychological indicators again, psychological indicators for each subject are obtained by subjective evaluation. In this case, psychological indicators can be obtained not only from the subject's saliva but also from subjective results from questionnaires. Therefore, it becomes possible to determine the subject's favorability towards textile products from a more multifaceted perspective.

[0055] The embodiments of the textile product favorability determination method described herein have been explained above. However, the present invention is not limited to the embodiments described above. That is, it will be readily apparent to those skilled in the art that the present invention can be modified and altered in various ways within the scope of the gist described in the claims. In other words, the content and order of the steps of the textile product favorability determination method can be appropriately changed within the scope of the gist described above.

[0056] For example, in the embodiment described above, an example was described in which the subject's cheeks were brought into contact with the textile products (pillowcase, first towel, and second towel) during the contact step. However, in the contact step, parts of the subject other than their cheeks may be brought into contact with the textile products. For example, the subject's hands, face, or neck may be brought into contact with the textile products, and the parts of the subject's body that come into contact with the textile products are not particularly limited.

[0057] In the embodiments described above, examples were given where the textile product was a pillowcase, a first towel, or a second towel. However, the type of textile product is not particularly limited in the textile product preference determination method according to this disclosure. The textile product may be, for example, a towel blanket, a core material, a blanket, a futon, a carpet, clothing, a cushion, or a sheet. [Explanation of Symbols]

[0058] S1, S2, S3, S4, S5, S6... Steps.

Claims

1. A process of obtaining psychological indicators of the subject from saliva secreted from the subject's body, The process of obtaining the aforementioned psychological indicators is followed by the process of bringing the subject's body into contact with the textile product, The process of bringing the subject into contact with the textile product, followed by the process of obtaining psychological indicators of the subject again from the saliva secreted from the subject's body, A step of determining the subject's liking for the textile product from the psychological indicators obtained in the step of obtaining the psychological indicators, and the psychological indicators obtained in the step of obtaining the psychological indicators again, Equipped with, Method for determining the favorability of textile products.

2. The process includes, before obtaining the psychological indicator, a step of preparing a plurality of textile products, and a step of extracting the subject's preferred textile product from the plurality of textile products. In the contact step, the subject's body is brought into contact with the textile product extracted in the extraction step. The method for determining the likeability of a textile product according to claim 1.

3. In the aforementioned contact step, the subject's cheek is brought into contact with the textile product. A method for determining the likeability of a textile product according to claim 1 or claim 2.

4. The textile product is at least one of a pillowcase and a towel. A method for determining the likeability of a textile product according to claim 1 or claim 2.

5. In the step of obtaining the aforementioned psychological indicator and the step of obtaining the aforementioned psychological indicator again, the subject's psychological indicator is obtained from the amylase contained in the saliva. A method for determining the likeability of a textile product according to claim 1 or claim 2.

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