Retention and delivered instructional minutes did not differ significantly between experimental and control conditions, and completers received well under planned dosage¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r2 · q3
Currency · newest study 2011 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Participant retention rates (51% experimental vs. 59% control) and average minutes of instruction delivered to completers did not differ significantly between conditions. → Hock Michael F. 2011 q3 i? Completers received only 68% to 86% of planned instructional hours depending on strategy, with only Prediction approaching the prescribed dosage. → Hock Michael F. 2011 (2)

Evidence¶

Hock Michael F. 2011¶

Hock Michael F., Mellard Daryl F. (2011). Efficacy of learning strategies instruction in adult basic education. Journal of Research on Educational Effectiveness, 4(2), 134-153. https://doi.org/10.1080/19345747.2011.555291

q3 · i? · causal · r2

Retention and attendance analysis in the RCT results section. T-tests also showed no significant differences in average minutes of instruction delivered to completers by strategy (Bridging p = .805, Fluency p = .839, Prediction p = .145, Summarization p = .463).

"The data indicate no significant difference in the overall participant retention rates in experimental (51%) and control (59%) classes (p = .147)"

Hock Michael F. 2011 (2)¶

Hock Michael F., Mellard Daryl F. (2011). Efficacy of learning strategies instruction in adult basic education. Journal of Research on Educational Effectiveness, 4(2), 134-153. https://doi.org/10.1080/19345747.2011.555291

q3 · i? · causal · r2

Dosage analysis from Table 2 of the RCT. Planned instruction ranged from 19 to 34 hours across strategies; the article states "Prediction was the only course that approached the prescribed dosage."

"instruction time for Bridging completers averaged 69% of planned hours, that is, 19 out of a possible 27 hours; Fluency completers averaged 13 out of 19 hours (68%); Prediction completers averaged 30 out of 34 hours (86%); and Summarization completers averaged 17 out of 23 hours of instruction (74%)."

Discussion¶

Related Claims¶

• The authors judge insufficient instructional intensity (dosage) as the primary factor behind the null result of learning strategies instruction in adult education — related
• BKT students completed posttest problems significantly faster than Control students, with DRL showing marginal advantages in time and solution optimality — related