Abstract
Sixty male and female subjects solved two sets of concept attainment tasks in two sessions separated by 48 hr. Subjects solved the first set as individuals or in same-sex pairs. All subjects solved the second set as individuals. The hypothesis-testing processing of those subjects initially trained as pairs fell below that of the individually trained subjects in the transfer session. It is suggested that group monitoring of inductive problem solving leads to negative group-to-individual transfer of hypothesis-testing processes.