Effects of attention control and forewarning on the activation and monitoring of experimentally induced false memories in the Deese/Roediger-McDermott paradigm were investigated in a young adult sample (N = 77), We found that reducing the degree of attention during encoding led to a decrease in veridical recall and an increase in non-presented critical lure intrusions. This effect could not be counteracted by a forewarning instruction. However, these findings did not emerge in a (retrieval supportive) recognition task. It seems that divided attention increases false recall when attention control and forewarning have to compete for limited cognitive resources in a generative free recall as opposed to a retrieval supportive recognition task. Forewarning instructions do not always protect young adults against experimentally induced false memories.
Peters, M. J. V., Jelicic, M., Gorski, B., Sijstermans, K., Giesbrecht, T. M., & Merckelbach, H. L. G. J. (2008). The corrective effects of warning on false memories in the DRM paradigm are limited to full attention conditions. Acta Psychologica, 129(2), 308-314. https://doi.org/10.1016/j.actpsy.2008.08.007