Psychology Commons^™

The Importance Of Retrieval Failures To Long-Term Retention: A Metacognitive Explanation Of The Spacing Effect, Harry P. Bahrick, Lynda K. Hall

All Faculty and Staff Scholarship

Encoding strategies vary in their duration of effectiveness, and individuals can best identify and modify strategies that yield effects of short duration on the basis of retrieval failures. Multiple study sessions with long inter-session intervals are better than massed training at providing discriminative feedback that identifies encoding strategies of short duration. We report two investigations in which long intervals between study sessions yield substantial benefits to long-term retention, at a cost of only moderately longer individual study sessions. When individuals monitor and control encoding over an extended period, targets yielding the largest number of retrieval failures contribute substantially to the …