A previous version of expectation theory assumed that the likelihood that evaluations will be accepted and used to assign performance expectations for group members depends upon the perceived ability level of the evaluator. An extension of the theory asserts that, in the absence of knowledge of the evaluator's ability, acceptance of his…

Two social psychological theories--similarity theory and equity theory--are employed to elucidate the relationship between group members' abilities and group performance on tasks involving high levels of interdependence. Contrasting hypotheses are drawn regarding specific ability compositions that should evoke performance above or below the simple…

A set of criteria was developed to assist users and developers of observation systems. Thirty-three criteria which observation systems should meet were identified and classified into three main types: identifying, validity, and practicality. (Author/DEP)

In a study to assess young children's social interaction with peers, six male toddlers who were the only participants in a playgroup were observed in two situations: (1) a GROUP situation in which at least four of the boys were present and (2) a DYAD situation in which only two boys were present. Both types of observations were made at 16, 19, and…