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Fig. 1 | Cognitive Research: Principles and Implications

Fig. 1

From: Elementary math in elementary school: the effect of interference on learning the multiplication table

Fig. 1

The experiment protocol. The experiment included a pre-experiment testing week (week 1), four training weeks (weeks 2–5), and two post-experiment testing weeks (weeks 7 and 12). Each testing week included 3 sessions, each of which involved testing the child on each multiplication fact as an open question. The post-experiment testing weeks also included a fourth session with a forced-choice test. Each training week included 4 training sessions in which that week’s 4 facts were rehearsed, followed by a session that tested all facts trained in the present and previous weeks. A training session consisted of a pre-session test (each of the week’s 4 facts tested once; a week’s first training session did not include a pre-session test), 4 training rounds, and a post-session test (each fact tested once). In a training round, the child first heard the 4 facts and repeated them, then he was tested on them

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