To assess the influence of self-esteem on interpersonal attraction, researchers either insulted or complimented students about their physical appearance just before they went on a blind date. In this research, the dependent variable was单项选择题

A

insults or compliments

B

physical appearance

C

interpersonal attraction

D

feelings of self-esteem

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A group of researchers conducts a study to determine if children's performance is affected by the presence of other children. First, the children are taken to a room with no other children and timed while they complete a puzzle. Later, the same children are taken to a room with four other children and timed while they complete a similar puzzle. In this study, the length of time it takes to complete the puzzle would be ___________________________.

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