Social and Behavioral Sciences Commons^™

The Roles Of Set Size And Nonexample Type On Concept Formation, Catherine L. Williams, Claire C. St. Peter, Madeleine J. Murphy

Graduate Student Scholarship

Concept formation is demonstrated when a learner responds when new examples are presented (i.e., generalization) but not when new nonexamples are presented (i.e., discrimination). Gradually increasing the number of examples and nonexamples taught together (i.e., set-size expansion) promotes concept formation with nonhumans. Although set size impacts speed of acquisition with humans, concept formation has not been evaluated. Therefore, the primary purpose of the current study was to compare acquisition and concept formation during two procedures: set-size expansion and single set-size. College students were taught two biological concepts, one using set-size expansion and the other with the full …