Adolescents' perceptions of their friends' behavior strongly predict adolescents' own behavior, however, these perceptions often are erroneous. This study examined correlates of discrepancies between adolescents' perceptions and friends' reports of behavior. A total of 120 11th-grade adolescents provided data regarding their engagement in deviant and health risk behaviors, as well as their perceptions of the behavior of their best friend, as identified through sociometric assessment. Data from friends' own report were used to calculate discrepancy measures of adolescents' overestimations and estimation errors (absolute value of discrepancies) of friends' behavior. Adolescents also completed a measure of friendship quality, and a sociometric assessment yielding measures of peer acceptance/rejection and aggression. Findings revealed that adolescents' peer rejection and aggression were associated with greater overestimations of friends' behavior. This effect was partially mediated by adolescents' own behavior, consistent with a false consensus effect. Low levels of positive friendship quality were significantly associated with estimation errors, but not overestimations specifically.

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In this study, the authors examined associations between preference- and reputation-based peer status and weight-related behaviors and cognitions for both adolescent boys and girls. Sociometric measures of peer like-ability and peer-perceived popularity, as well as self-reported measures of body size, dieting behavior, and weight-related cognitions were collected from a sample of 441 adolescents in Grades 11 and 12. Results revealed weight-related cognitions for girls (concerning obesity) and boys (concerning musculature/fitness). Peer-perceived popularity, but not like-ability, was significantly associated with both boys' and girls' body size and dieting. Lower levels of popularity were associated with heavier body shapes for girls and with both thin and heavier body shapes for boys. Findings suggest that peer status is an important source of social reinforcement associated with weight-related behaviors and cognitions.

This study examines 2 aspects of cognitive processing in person perception-attention and decision making-in classroom-relevant contexts. Teachers completed 2 implicit, performance-based tasks that characterized attention to and utilization of 4 student characteristics of interest: ethnicity, facial affect, body size, and attractiveness. Stimuli were 24 full-body photos of girls that varied along the dimensions of interest. Teachers completed a similarity-ratings task and 4 preference-ratings tasks. Results showed that teachers attended to ethnicity and body size but did not utilize this information when selecting students across contexts. In contrast, teachers relied heavily on affect and attractiveness when making decisions. These results suggest that further investigating cognitive processing in person perception is important in understanding how teachers attend to and use multiple salient student attributes in real-world contexts. This study also illustrates the potential utility of adopting a method that places a premium on internal validity to investigate questions relevant to educational researchers. Future work should investigate how other student information, such as student background or personality, affects teachers' cognitive processing in different classroom-relevant contexts.

Numerous th eoreti cal app roach es implicate a role for altered cogn itive proces sing in th e dev elop ment, maintenance, and treatment of a wide ran ge of clinically relevan t beh aviors. Clinical scient ists have been slow, however , to capitalize on the wealth of co n te mporary theoretical, measurement, an d analytical models of cognitive processing when constructing, evalu ating, and ex tend ing the se th eoreti cal approaches to psych opathology (