Joanna Nguyen*, Rachel Smith, Susanne Jaeggi, Ph.D. University of California, Irvine Cognitive training over the past years has increased in frequency and variability to measure working memory and its capacity; however, training in younger adults is to be investigated. Adapted from a study by Buschkuehl and Jaeggi (2008) on older adults, this study examines the relationship between cognitive training distribution and condition on working memory performance of younger adults from spacing and transfer effects. 98 younger adult participants completed 10 sessions training on either a working memory or general knowledge task. We also varied training distribution (i.e. whether participants trained every other day, every day, or twice a day) and compared participants’ performance scores at the pre- and post-test using non-trained working memory and long-term memory measures. Preliminary results show that participants improved their performance in all outcome measures, and in addition, the working memory training group outperformed the control in one of the working memory measures. There was no effect of spacing in any of the outcome measures, indicating that training distribution has no impact on memory outcome, which is consistent with earlier findings in older adults.