Japanese Psychological Research
Online ISSN : 1468-5884
Print ISSN : 0021-5368
EFFECTS OF BYSTANDER DENSITY UPON ALTRUISTIC BEHAVIOR
OSAMU IWATA
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JOURNAL FREE ACCESS

1977 Volume 19 Issue 2 Pages 49-55

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Abstract

College students participated in a questionnaire study. The questionnaire booklet contained 11 pairs of situational descriptions in which someone in distress needed help. All pairs were dissociated and the 22 situations randomly ordered. One situation of each pair represented high bystander density and the other low. Subjects were requested to choose an altruistic or less altruistic response to each situation. Results were very similar for male and female samples. The bystander density was a determinant of altruistic behavior. The degree of altruism was a mediating factor of helping behavior in some situations. Sex, community size, experience of residential move, interpersonal affiliation, and trust in humans were negligible or weak intervening factors in the effect of bystander density upon altruistic behavior.

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© The Japanese Psychological Association
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