The sequence in which problems of different concepts are studied during instruction impacts concept learning. For example, several problems of a given concept can be studied together (blocking) or several problems of different concepts can be studied together (interleaving). In the current study, we demonstrate that the 2 sequences impact concept…

The conceptual structure account of semantic memory (CSA; L. K. Tyler & H. E. Moss, 2001) claims that feature correlation (the degree to which features co-occur) and feature distinctiveness (the number of concepts in which a feature occurs) interact with domains of knowledge (e.g., living vs. nonliving) such that the distinctive features of…

This paper shows that Garfinkel and Gramlich's conclusion about the average performance of the contractors is not supported by the data. The discussion focuses on three issues: (1) The study was conducted in such a way that performance contracting schools and the comparison schools were generally not comparable in terms of initial achievement,…