Perceptions of intelligence were investigated in 2 longitudinal studies of leaderless discussion groups (LDGs). In Study 1 (N = 87), students completed trait-shyness questionnaires and met 7 times in groups of 4-5. After Meetings 2 and 7, participants rated all group members on state shyness and intelligence. Trait-shy participants were initially judged to be less intelligent on both self-and peer ratings. At Time 2, however, trait-shy participants were no longer derogated by peers. Study 2 (N = 103) replicated the same pattern of shy derogation while demonstrating no actual relation between IQ and trait shyness. Again, trait-shy derogation disappeared by Time 2, but state-shy derogation continued, The state shy were now the low-IQ participants, who had begun to talk less. Thus, the bias against quiet individuals, originally inappropriate, gradually became a valid cue for low intelligence. Results were traced to overlapping cues for intelligence and shyness in LDGs. Shyness I has been linked to a cascade of negative consequences. These include low self-esteem (Cheek & Buss, 1981), loneliness (Jones & Carpenter, 1986), depression (Traub, 1983), and overconformity (Santee & Maslach, 1982). Moreover, shyness is inversely related to such positive sequelae as dating frequency and satisfaction, number of friends, and level of self-disclosure to friends (Jones & Briggs, 1984). In a longitudinal study, Caspi, Elder, and Bem(1988) found that shy men married later, had less stable marriages, and became parents later than nonshy men; they were also delayed in settling into a career, which limited their overall career achievement. In short, trait shyness is associated with impairments in selfconcept, personal relationships, and career success. There is reason to believe that the plight of shy people is due, at least in part, to unwarranted negative perceptions of their intellectual abilities. Little is known, however, about which abilities are derogated and why. In this report, we pursued the possibility that this ability derogation of shy persons is limited to unfamiliar perceivers in socially demanding contexts. To this end, we examined perceptions of shy persons' abilities in a demanding social situation, namely, leaderless discussion groups. Perceptions of Shy Persons' Intellectual Abilities Although there is some evidence to justify a negative view of their social skills (e.g., Meleshko & Alden, 1993), the derogation of shy individuals appears to overgeneralize to other evaluative domains. Of particular interest here are several studies