Lyle, Robert C2012-03-132012-03-1319741974Source: Dissertation Abstracts International, Volume: 72-04, Section: B, page: .http://hdl.handle.net/10393/21072http://dx.doi.org/10.20381/ruor-8786Abstract not available.136 p.Psychology, General.Psychological differentiation and strategy choice in Bruner's concept attainment tasksThesis