Edith Cowan University
Jaeggi and colleagues have claimed that fluid intelligence may be improved through a cognitive training regime utilising the n-back task; maintaining that the improvement in Gf is realised through melioration in working memory (WM). To date there has been no evidence to support this assertion, however Jaeggi, Buschkuehl, Jonides, and Perrig (2008) obtained a significant improvement in short term memory (STM). The current study examined the near transfer mechanisms of the single n-back task; specifically STM and WM as operationalised through the Woodcock-Johnson III Tests of Cognitive Abilities. Forty-seven participants were divided into experimental (n = 26) and active control groups (n = 21); and engaged in 20-daily, 20-minute training sessions over a 30-day period using either a single n-back, or a combined verbal and general knowledge task respectively. Before and after the training process STM and WM psychometric tests were administered, and subsequently compared for performance improvements. The constructs of WM and STM were found not to be significantly improved by single n-back training. Furthermore, pre-training test scores, and test gain scores were found to be independent of age.