Although accurate time perception is necessary to properly respond to the environment, it was discovered that non-temporal features also affect time perception. Previous studies have identified various factors that affect time perception, but there was no attempt to directly investigate the possible effects of the distance between participants and the stimuli on time perception. The current study examined the effects of viewing distance on time perception, by considering the retinal, physical, and perceived size of the stimuli. The viewing distance had no effect when either the physical size or the perceived size of the stimulus was the same. Viewing distance was found only to have an effect when the retinal size of the stimulus was the same. This effect might be a size effect rather than a distance effect because as the viewing distance increases the size should also increase to maintain the retinal size. These results imply that temporal perceptual constancy is preserved irrespective of the viewing distance, when distance information is not limited.
Human perceptional speed is different from its real speed. There is lack of research that the perceptional speed is different from real speed in 2-dimension, because most research of speed perception has concentrated on points and lines. This research investigates the effects of object size on speed perception. In this research, we used 2-D circular objects of the different size, 0.9, 1.8 and $3.6^{\circ}$. The objects moved 9.0, 13.5 and $18.0^{\circ}$ with three different speeds, 6.0, 9.0 and $18.0^{\circ}$/s. Six participants were exposed to the environment with standard scene(size: $1.8^{\circ}$, speed: $9.0^{\circ}$/s and travel distance: $13.5^{\circ}$). After the first scene, another scene in which the object had changed to different sizes, speeds and distances, was shown to the participants. A magnitude estimation method was used to construct a scale of the perceived speed level. The relationship between the perceived and the actual speed level was explained by Stevens's power law that the value was 0.978 with the exponent of 0.992. The size of object had an effect on the speed perception but travel distance was not. The perceptional speed of bigger object was lower than of smaller object. It showed that the degrees of perceptional speed decreased as size of object increased.
This study explored elderly American women's body satisfaction and clothing consciousness with the methods of survey and body measurement. To that end, I first investigated their self-perception of body size and body satisfaction and also the relationships between those, along with the relationships between body measurements and body satisfaction. Then, I analyzed the differences in elderly women's body satisfaction and clothing consciousness among different body type groups. For the last, I examined the degree of their body thinness or obesity and ideal body size in order to explore the standard for ideal body shape among elderly women. Elderly American women were satisfied with most of their body parts except waist circumference and weight. Body satisfaction with stature, weight, and hip circumference was correlated to both size perception and body measurement. Body satisfaction with thigh circumference and leg length was correlated to size perception, and also that with waist circumference and neck length to body measurement. Size perception showed differences among body types, but body satisfaction did not show notable differences among body types. There were significant differences between real size and ideal one. Elderly American women thought that clothing was important in their everyday life.
The purpose of this study was to compare the perception of men's lower body shape in the 60s with that in the 20s. On hundred and seven men in the 60s and 178 men in the 20s participated in the survey and measurements. The results were as follows : 1. It was perceived that men in the 60s had broader girth but lighter weight than men in the 20s. The research revealed that men in the 60s was more satisfied with their lower body shape than men in the 20s. 2. It was also found that the ideal size of men in the 60s was broader in the girth of their waist and hip, shorter in their height, and lighter in their weight compared to men in the 20s. 3. It showed a difference in the satisfaction with their body shape between men in the 60s and the 20s. The satisfaction with their lower body shape of men in the 60s was more affected by their perception than by their real measured size. On the other hand, the satisfaction of men in the 20s was affected by their perception as much as by their measured size. 4. If we look at the perception and satisfaction in relation with their body types, we found that there was a difference in the girth of their waist, abdomen, hip, and weight depending on their body types. And men in the 20s showed greater differences in their perception and satisfaction depending on their body types, compared to men in the 60s. 5. The measured size of men in the 20s had greater differences depending on their body types than that of men in the 60s. On the contrary, the ideal size of men in the 60s had greater differences than that of men in the 20s.
Two elements of paisley textile design (color and size of motif) were manipulated to investigate their effects on people's perception. Korean and Caucasian American women were selected to represent Asian and Western countries to compare the differences in image perceptions of paisley patterns between two cultures. The participants were 168 female university students composed of 84 Caucasian Americans and 84 Koreans. The experimental design was a $2{\times}2{\times}7$ factorial design: two levels of perceiver's culture, two levels of motif size, and seven levels of the motif color. The four factors used to account for image perception were an elegance factor, individuality factor, maturity factor, and femininity factor. The results of the present study confirm that image perception can be different according to the color and size of a motif and the perceiver's culture. In the results, Americans perceived the paisley pattern as more preferable than Koreans did. Red background + Orange motif was perceived as the most feminine and Dark blue background + Sky blue motif and Dark gray background + Gray motif was perceived as the most masculine in both cultures. Compared to the big motif, the small motif was perceived as more elegant in both cultures.
New media moved the place of social exchange to the Internet, allowing large groups to communicate in one place beyond the limits of time and space. Recent studies have also reported cases in which human social abilities do not keep up with the expansion of group scale through social media. In this context, current study investigated how human perception of social information is affected by the expansion of the group scale in the context of majority bias. Using Internet-based task, the psychological processes that group ratio and group size are perceived and affect majority-biased social information use were investigated, and whether group scale moderates those processes was examined. The group ratio has a positive effect on the majority bias, and the relationship was partially mediated by ratio perception. Group scale did not moderate the relationship between group ratio and ratio perception. On the other hand, the correlation between group size and majority-biased social information use was not significant. Group scale moderates group size perception. The group size and size perception showed positive correlation under the smaller group scale condition. However under the extended group scale condition, the perceived group size became significantly lower and lost its correlation with group size. These results provide evidence that the psychological mechanism related to group size perception was not properly responding to the expansion of the group scale. Furthermore, the possibility of a specific psychological mechanism for processing group size information and the form of information input specifically accepted by majority bias were discussed from perspective of evolutionary psychology.
Journal of Korean Home Economics Education Association
/
v.18
no.3
s.41
/
pp.119-131
/
2006
The purpose of this study was to investigate the body size perception and appearance management behaviors of middle school boys and girls. Subjects of this study were 7 coeducational middle school boys and girls in Gwangju and 435 responses were collected from real body measurement and questionnaires. SPSS package 12.0(Kr) was used to analyze results. The results were summarized as follows: First, middle school boys and girls tended to perceive their bodies slimmer as well as obeser. It is recommended to give education for correct perception of their body sire. Second, the correlation of body size perception factor and appearance management behavior was Middle school boys and girls tended to manage their appearance using a diet rather than doing exercise in obesity distortion perception group(the group perceive obeser than real body size). It needs to be properly guided. Third, the appearance management behavior of slimness distortion perception group(the group perceive slimmer than real body size) and normal group was examined. While middle school boys did only exercise management, middle school girls did all but exercise management. Their education should be distinguished. Finally, while slimness distortion perception group did diet management in both middle school boys and girls, they tended not to manage body correction or exercise. A tendency to depend only on a diet in the group who should perceive their need of exercise should be corrected. In order to correct the distorted body perception and appearance management behavior of middle school boys and girls, it is recommended to educate a standard body size through home management education which is a regular curriculum, and at the same time to guide them to perceive their actual body size correct.
Human perception is an outcome of the influence of various factors rather than objective reflection of external environment. Among the factors, action-specific perception is a phenomenon where perception changes in terms of one's ability to act on the environment. Previous research reported contradictory results regarding whether action-specific perception occurs during performance or after performance due to memory distortion or knowledge about performance results. In this research, we conducted three experiments to determine when action-specific perception occurs. Participants threw darts at different distances and reported perceived size of targets in each trial. The results showed that, in Experiments 1 and 2, participants perceived targets larger when they hit than missed the targets, and the effect was greater when the targets were not visible after each throw. However, because participants had knowledge about the results of their throws, there could have been bias in participants' responses. In Experiment 3, where this possibility was excluded, we also obtained action-specific perception, and therefore concluded that action-specific perception occurs during but not after task performance.
Although there has been much advance in the development of 3D displays of various purpose, 3D contents are not yet so used as expected in those displays. One well-known obstacle in the enjoyment of 3D contents is visual fatigue, but another major issue is image distortion of 3D contents. In the previous research, Shin, Li, & Kim (2012) reported systematic linear relationship between screen disparity and size perception of a simple object whose retinal size was constant across different disparities. In this research, we intended to generalize the previous finding by using various 3D stimuli in the test of the relationship between screen disparity and size perception of those stimuli. Consistent with previous findings, our data indicated that size perception linearly changes as a function of screen disparity and the linearity was observed in all stimuli types we used in this research. We described the empirical relationship between screen disparity and size perception in the form of prediction function for size perception in which visual angle is the predictor. This function will be very useful in the creation of 3D contents as one can make reasonable predictions on the to-be-perceived size of an object being filmed using screen disparity of their camera setting.
The purpose of this study is to grasp the actual condition toward the clothing of senior males' and perception of male's formal wear companies for silver market through a survey targeting senior males and clothing companies. The survey was conducted targeting 196 senior males and chief-patterners of 7 companies' 10 brands. The questionnaire distributed to senior males was consisted of 22 items regarding the perception and satisfaction on clothes. And 12 items concerning the perception of senior male clothing brands and the size system was developed for clothing companies. The results of the study are as follows. The study revealed that most senior males perceived that brand clothing for them was necessary. More than half of the respondents were not satisfied with ready-made clothes. And many senior males prefer ready-made clothing when they purchase their clothes. For these reasons, senior males apparel market might be promising. Currently, the perception of male's formal wear companies on the need of brand was high. However, considering that brand launching might be difficult to be realized soon I presume that size spectrum based on body size of senior males is necessary which reflect their physical characteristics and activities.
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