Is graphic activity cognitively costly? A developmental approach

The present experiment was carried out to test the hypothesis that the use of the written mode increases the working memory load. Second and fourth gr aders were orally presented with series of unrelated words which they were required to recall in sequence. Each subject had to recall five different l ists in the following conditions: oral alone, written, oral with a concurre nt task (tapping, categorization, drawing). Participants recalled more word s in the oral condition than in either the written mode or the `oral and ca tegorization' conditions. Moreover, second graders performed better in the oral mode than in the `oral and drawing condition'. This trend was not sign ificant with older children. Finally, the tapping task did not affect child ren's performance. The results are consistent with our cognitive load hypot hesis.