Effect of verbal encoding and motor memory on test performance in the Rey Visual Design Learning Test

This study offers new evidence for the validity of the interpretation of the Rey Visual Design Learning Test (RVDLT) test score. The RVDLT is a design memory test that requires constructive output (drawings of memorized test items) in the recall phase. We mainly focused on response processes and tested the effect of a verbal and a motor memory strategy on test performance. Strategies were only explained and participants (12- to 15-year-olds) were stimulated to use them in a subsequent test session. In the verbal encoding condition, participants were instructed to name the test items of the RVDLT. In the copy condition, participants copied test items with an empty pen concurrent with test item presentation (rehearsal of motor sequences). Test performances were compared to a control group. No significant difference in RVDLT test score was detected between the verbal encoding group and the control group. However, the copy group scored significantly lower than the other two groups. Results are discussed in light of the validity of the test interpretation.