Learning timing produces Group X Time interactions in both memory systems: declarative consolidation time courses differ between afternoon and evening groups, and finger-tapping speed and accuracy show highly significant Group X Time interactions¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r2 · q3
Currency · newest study 2012 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? The declarative word-pair ANOVA showed a significant Time X Group interaction (F = 3.3, P = 0.040), indicating different consolidation time courses between groups. → Holz J 2012 q3 i? The finger-tapping ANOVA showed a highly significant Group X Time interaction for speed (F = 7.8, P = 0.001) and accuracy (F = 5.5, P = 0.006). → Holz J 2012 (2)

Evidence¶

Holz J 2012¶

Holz J, Piosczyk H, Landmann N, Feige B, Spiegelhalder K, Riemann D, Nissen C, Voderholzer U. (2012). The Timing of Learning before Night-Time Sleep Differentially Affects Declarative and Procedural Long-Term Memory Consolidation in Adolescents. PLoS ONE 7(7): e40963. https://doi.org/10.1371/journal.pone.0040963

q3 · i? · causal · r2

Omnibus 3x2 repeated-measures ANOVA (Time: Days 1, 2, 8; Group: AG vs EG) on correctly retrieved word-pairs in the randomized experiment. The significant Time X Group interaction (F = 3.3, P = 0.040) motivated the interval-wise retention-rate comparisons.

"showed a highly significant Time effect ( F = 22.6, P,0.001), no significant Group effect ( F = 0.1, P = 0.772) and a significant Time X Group interaction ( F = 3.3, P = 0.040) for the number of correctly retrieved word-pairs, indicative for significant differences in the time course of declarative memory consolidation between the groups."

Holz J 2012 (2)¶

Holz J, Piosczyk H, Landmann N, Feige B, Spiegelhalder K, Riemann D, Nissen C, Voderholzer U. (2012). The Timing of Learning before Night-Time Sleep Differentially Affects Declarative and Procedural Long-Term Memory Consolidation in Adolescents. PLoS ONE 7(7): e40963. https://doi.org/10.1371/journal.pone.0040963

q3 · i? · causal · r2

Omnibus repeated-measures ANOVA on finger-tapping performance in the same randomized experiment: overall Time effect (F = 144.7, P < 0.001), no Group effect (F = 1.5, P = 0.220), and highly significant Group X Time interactions for speed and accuracy.

"An ANOVA with the repeated-measures factor Time (Day 1, 2 and 8) and the between-subject factor Group (AG, EG) showed an overall improvement in finger-tapping performance (multivariate effect for the factor Time: F = 144.7, P,0.001), no significant multivariate Group effect ( F = 1.5, P= 0.220) and a highly significant Group X Time interaction (speed: F= 7.8, P= 0.001; accuracy: F= 5.5, P = 0.006)."

Discussion¶

Related Claims¶

• Adolescents trained on a finger-tapping task in the evening show greater off-line gains in tapping speed than afternoon-trained adolescents at both 24 hours and 7 days
• Adolescents trained on word pairs in the afternoon show higher word-pair retention after 24 hours than evening-trained adolescents, but the difference is not sustained at 7 days — a narrower finding that bears on this claim
• Evening-trained adolescents show greater gains in finger-tapping accuracy (reduced error rate) than afternoon-trained adolescents at both retention intervals — related
• Polysomnographic sleep parameters did not differ between afternoon- and evening-trained groups and did not correlate with memory consolidation measures — related
• Repeated measures ANOVA shows significant time-of-testing effect and significant time-by-group interaction on word-problem scores — related