The Effect of Sleep on Intrusive Memories in Daily Life: A Systematic Review and Meta-analysis of Trauma Film Experiments.

Although the results suggest that sleep reduces the number of intrusions, there is a strong need for high-powered pre-registered studies to confirm this effect. Risks of biases in the reviewed work include the selection of the reported results, measurement of the outcome, and failure to adhere to the intervention. Limits with the current meta-analysis include the few number of studies, only including English-language studies, and the fact that it was not pre-registered.