Interleaving examples of to-be-learned categories, rather than blocking examples by category, frequently enhances category induction. The presently dominant theory is that interleaving promotes discriminative-contrast, and suggests that category similarity structure modulates this interleaving benefit: that blocking should benefit learning when…

The presuppositions that favor firsthand experience over secondhand information, as pertaining to learning and education, are questioned. It is noted that, when education and firsthand experience are described as if equivalent, a presumption is made that a commonsense theory of knowledge and mind is valid. Research on the social psychology of…