| Abstract: | Employed a complex stimulus situation in a variation of the reversal-nonreversal paradigm. 40 adult male Ss were given part and whole reversal and nonreversal shifts to perform on a 4-dimensional, 2 relevant dimension concept-attainment paradigm. It was found that the usual superiority of the reversal shift held only for part shifts; for whole shifts the nonreversal shift was more readily performed. Results are incompatible with the 2-stage mediational approach as currently formulated, and a tentative explanation in terms of hypothesis-testing strategies is outlined. A replication incorporating a control for E bias verified the original results. (French summary) (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
