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In the light of current controversy about the nature of intrusions in posttraumatic stress disorder (PTSD), the review by Brewin (2014) is timely and important. It will undoubtedly stimulate further research and guide researchers� quests for understanding the nature of flashbacks in PTSD. In this commentary, I briefly summarize and discuss key points made by Brewin and elaborate on some of the reasons behind the controversy. For example, the terms involuntary autobiographical memories, intrusive memories, and flashbacks are often used interchangeably. I propose a taxonomy revealing the key differences across these forms of memory. If flashbacks are characteristic of patients with PTSD only, it is essential that more research targeting this population is conducted with a variety of methods. Finally, some new avenues for research to study intrusive memories and flashbacks in PTSD, using a diary method and modified trauma film paradigm, are described. (PsycINFO Database Record (c) 2013 APA, all rights reserved)
