The Critical Importance of Retrieval for Learning

TLDR

Learning is typically considered complete when a student can correctly answer a question. Students learned foreign‑language vocabulary through repeated study‑test trials, while in other conditions items were omitted from subsequent study, testing, or both after correct recall. Repeated testing markedly improved delayed recall, whereas repeated studying had no effect, and students’ self‑predictions did not match actual performance, underscoring retrieval practice’s essential role in learning.

Abstract

Learning is often considered complete when a student can produce the correct answer to a question. In our research, students in one condition learned foreign language vocabulary words in the standard paradigm of repeated study-test trials. In three other conditions, once a student had correctly produced the vocabulary item, it was repeatedly studied but dropped from further testing, repeatedly tested but dropped from further study, or dropped from both study and test. Repeated studying after learning had no effect on delayed recall, but repeated testing produced a large positive effect. In addition, students' predictions of their performance were uncorrelated with actual performance. The results demonstrate the critical role of retrieval practice in consolidating learning and show that even university students seem unaware of this fact.