The context sensitivity of visual size perception varies across cultures

There is evidence that East Asian cultures have more context-sensitive styles of reasoning, memory, attention, and scene perception than Western cultures. Lower levels of the perceptual hierarchy seem likely to be similar in all cultures, however, so we compared context sensitivity in Japan with that in the UK using a rigorous psychophysical measure of the effects of centre-surround contrast on size discrimination. In both cultures context sensitivity was greater for females working in the social sciences than for males working in the mathematical sciences. More surprisingly, context sensitivity was also much greater in Japan than in the UK. These findings show that, even at low levels of the visual-processing hierarchy, context sensitivity varies across cultures, and they raise important issues for both vision scientists and cross-cultural psychologists.     

The Stroop effect in English-Japanese bilinguals: the effect of phonological similarity

English-Japanese bilinguals performed a Stroop color-word interference task with both English and Japanese stimuli and responded in both English and Japanese. The Japanese stimuli were either the traditional color terms (TCTs) written in Hiragana or loanwords (LWs) from English written in Katakana. Both within-language and between-language interference were found for all combinations of stimuli and responses. The between-language interference was larger for Katakana LWs (phonologically similar to English) than for Hiragana TCTs, especially with Japanese responses. The magnitude of this phonological effect increased with self-rated reading fluency in Japanese. Overall responding was slower and the Stroop effect larger with English than with Japanese stimuli. These results suggest that unintentional lexical access elicits automatic phonological processing even with intermediate-level reading proficiency.     

Self-Construal,Social Support,and Loneliness in Japan

We examine the effects of self-construal and social support in friendships on loneliness using data from a random sample of residents in Tokyo, Japan. We find that the relationship between interdependent and independent self-construal is not orthogonal, as found by studies in the West, but moderately positive. Net of independence, interdependence significantly and positively predicts perceived social support, but not vice versa. By comparison, neither interdependence nor independence completely absorbs the protective effect of the other on loneliness. Our full models including other variables (e.g. gender, age, and extraversion personality) show that interdependence matters more in explaining perceived social support and loneliness. Moreover, perceived social support partially mediates the negative effect of interdependence on loneliness. We discuss implications of these and other related findings for future research on self-construal and subjective wellbeing across societies.

     

Development of a cognitive function test using virtual reality technology: examination in healthy participants

We developed a virtual reality test to assess the cognitive function of Japanese people in near-daily-life environment, namely, a virtual shopping test (VST). In this test, participants were asked to execute shopping tasks using touch panel operations in a “virtual shopping mall.” We examined differences in VST performances among healthy participants of different ages and correlations between VST and screening tests, such as the Mini–Mental State Examination (MMSE) and Everyday Memory Checklist (EMC). We included 285 healthy participants between 20 and 86 years of age in seven age groups. Therefore, each VST index tended to decrease with advancing age; differences among age groups were significant. Most VST indices had a significantly negative correlation with MMSE and significantly positive correlation with EMC. VST may be useful for assessing general cognitive decline; effects of age must be considered for proper interpretation of the VST scores.     

Attentional bias to direct gaze in a dot-probe paradigm

Previous research has suggested that a singly presented facial stimulus having a direct gaze holds spatial attention. This study examined whether facial stimulus having a direct gaze can also capture spatial attention in a relative dot-probe paradigm (facial stimulus having a direct gaze was presented concurrently with that having an averted gaze). The results showed that participants oriented their spatial attention to a facial stimulus having a direct gaze rather than to that with an averted gaze. This attentional bias depended on gaze-perception mechanisms as observed in the lack of attentional bias to a direct gaze from unnatural-looking eyes (i.e., white pupil/iris and black sclera). These findings raise the possibility that the attentional effect implicated in the perception of a direct gaze is induced regardless of the stimulus context.     

The Ebbinghaus illusion deceives adults but not young children

The sensitivity of size perception to context has been used to distinguish between ‘vision for action’ and ‘vision for perception’, and to study cultural, psychopathological, and developmental differences in perception. The status of that evidence is much debated, however. Here we use a rigorous double dissociation paradigm based on the Ebbinghaus illusion, and find that for children below 7 years of age size discrimination is much less affected by surround size. Young children are less accurate than adults when context is helpful, but more accurate when context is misleading. Even by the age of 10 years context‐sensitivity is still not at adult levels. Therefore, size contrast as shown by the Ebbinghaus illusion is not a built‐in property of the ventral pathway subserving vision for perception but a late development of it, and low sensitivity to the Ebbinghaus illusion in autism is not primary to the pathology. Our findings also show that, although adults in Western cultures have low context‐sensitivity relative to East Asians, they have high context‐sensitivity relative to children. Overall, these findings reveal a gradual developmental trend toward ever broader contextual syntheses. Such developments are advantageous, but the price paid for them is that, when context is misleading, adults literally see the world less accurately than they did as children.     

Effects of illusory stripes on the Helmholtz illusion

This study examined the Helmholtz illusion by using "illusory stripes." A square patch is perceived as wider when vertical lines are drawn on it and is perceived as taller when horizontal lines are drawn on it, i.e., Helmholtz illusion. With vertical lines curved sinusoidally, horizontal "illusory stripes" are perceived; and with horizontal lines curved sinusoidally, vertical "illusory stripes" are perceived. The purpose of the present study was to test whether the "illusory stripes" produce the Helmholtz illusion. We measured the apparent size of a square patch filled with sinusoidal lines. Our subjects (N=27) judged the patch with horizontal "illusory stripes" taller than the square patch filled with vertical straight lines. The subjects also judged the square patch with vertical "illusory stripes" wider than the square patch filled with horizontal straight lines. These results demonstrate that "illusory stripes" can produce the Helmholtz illusion.     

A comparison of four causal factors of embarrassment in public and private situations

In this study the authors investigated which of 4 causal factors of embarrassment is most characteristic in public and in private situations. University students (N = 288) were presented with 2 scenes representing public or private situations and were asked to rate 17 items related to the 4 factors causing embarrassment. The results indicated that in the public situation the causal factors were ordered as (a) disruption of social interaction, (b) apprehension of social evaluation, (c) inconsistency with self-image, and (d) loss of self-esteem, and in the private situation causal factors were ordered as (a) loss of self-esteem, (b) inconsistency with self-image, (c) apprehension of social evaluation, and (d) disruption of social interaction. From these results, new models for the mediating mechanism of embarrassment are proposed.     

Who are your Neighbors? Neighbor Relationships and Subjective Well-Being in Japan

Supportive relationships with neighbors have been shown to positively predict indicators of subjective well-being. Using data from the 2010 Japanese General Social Survey, we examine how neighbor relationships predict subjective well-being. Japan presents an interesting case to examine this question when considering its highly institutionalized neighborhood associations. We find that controlling for the safety and amenity aspects of the neighborhood environment, supportive neighbor relationships significantly increase men and women’s life satisfaction, but such relationships have a significant positive effect only on men’s happiness. The effects of neighborhood relationships on life satisfaction and happiness are significantly larger for men. Moreover, we find that the social and safety aspects of the neighborhood reinforce each other to increase life satisfaction also only for men. Implications of the gendered pattern of these results are discussed for future research on the association between neighbor relationships and subjective well-being in Japan and beyond.