Inserting trivia questions between interleaved exemplars impairs inductive learning when it disrupts juxtaposition of categories, with total spacing held constant¶

Claim · All claims
Evidence · 1 study · causal r2 · q3 · i3 large
Currency · newest study 2013 · checked against its sources 2026-10-20 (automated, 1 of 1 entry) · not reviewed by a person

Subclaims¶

q3 i3 Accuracy was significantly lower in the alternating-trivia condition than in the contiguous and grouped-trivia conditions, supporting the discriminative-contrast hypothesis. → Monica S. Birnbaum 2013

Evidence¶

Monica S. Birnbaum 2013¶

Monica S. Birnbaum, Nate Kornell, Elizabeth Ligon Bjork, & Robert A. Bjork. (2013). Why interleaving enhances inductive learning: The roles of discrimination and retrieval. Memory & Cognition, 41, 392–402. https://doi.org/10.3758/s13421-012-0272-7

q3 · i3 · causal · r2

Online experiment with 102 Mechanical Turk participants studying photos of eight bird species in interleaved order under three conditions (contiguous, grouped-trivia, alternating-trivia). The ANOVA yielded "F(2, 99) 0 8.53, p< .001" with effect size η²p = .15, and the post-hoc test showed the alternating-trivia condition was significantly lower.

"Correct performance on the final test, which is illustrated in Fig. 2, was significantly affected by participants ' learning conditions, F(2, 99) 0 8.53, p< .001, η2 p ¼ :15 . Furthermore, a Tukey –Kramer post-hoc test showed that accuracy was significantly lower in the alternating-trivia condition than in the other two conditions"

Discussion¶

Learner Variables¶

• Time and Continuity — moderator: an instructional effect differs with it

Related Claims¶

• When exemplars are already interleaved, larger temporal spacing between same-category exemplars yields better inductive learning than smaller spacing — related
• When trivia questions space out exemplars, spacing and interleaving are subadditive: interleaving beats blocking only with contiguous presentation, and spacing helps blocked but not interleaved study — related
• The interleaving benefit is not caused by spacing, and the benefit extends to delayed tests — related
• Learners overwhelmingly judge blocking more effective than interleaving even when their test performance favors interleaving — related
• The most effective intervention types provided counterstereotypical exemplar experience, evaluative conditioning, or strategies to override biases — related
• Categorization accuracy was significantly higher for infrequently alternated categories than for frequently alternated categories — reports the opposite
• The discriminative-contrast hypothesis treats spacing and interleaving as distinct effects, with interleaving benefits more likely for similar than dissimilar interleaved tasks — related
• Frequent alternation of categories yields more interrelated concepts than infrequent alternation, as indicated by a diagnosticity-by-alternation interaction — related
• Interleaving is more effective for materials with a low degree of discriminability — related
• Interleaving—presenting different concepts in alternation rather than repeating the same concept—improves students' discrimination among similar concepts, terms, and principles — related