Investigating the testing effect: Retrieval as a characteristic of effective study strategies

Abstract Presently, the most common approach to examining the testing effect is using a free recall form of retrieval practice. In this experiment, we compared free recall to other retrieval-based study strategies including practice quizzing, test-generation, and keyword. We also examined the possible benefit of coupling these retrieval-based strategies with free recall. A total of 338 undergraduates were randomly assigned to one of the nine conditions: a repeated retrieval (study-test) learning condition paired with one of the four retrieval-based strategies, a single retrieval (study-study) learning condition paired with a retrieval-based strategy, or a rehearsal (study-study-study) condition. Following a 7-day delay, students completed a test assessing retention of information learned. There was a significant interaction between learning condition (repeated vs. single retrieval practice) and type of retrieval-based strategy. Free recall and practice quizzing were the most effective types of retrieval practice, and coupling testgeneration and practice quizzing with free recall led to significant benefits in performance.