Induction of false beliefs and false memories in laboratory studies-A systematic review
Abstract
Psychological interventions often use guided discovery and other techniques for diagnostic exploration and intervention planning. This way, memories may arise in the person, which may be true or false. False memories of earlier events can be harmful and result in real suffering, similar to actual traumatic memories. Based on cognitive psychological and psycho-traumatological findings, there is pronounced dissent in the academic disciplines regarding the conceptualization, relevance and research of false memories. This review contributes to the basic question of how often false beliefs and false memories may be induced within the frame of different interactional techniques. A systematic review has been conducted of 59 articles from (quasi-)experimental studies and two qualitative sources from 30 data bases. Three main methods of memory induction provide the basis for reporting: imagination inflation, false feedback, and memory implantation. Due to the conceptual and methodological diversity of the studies, the results appear to be heterogeneous. Free and guided imagery, as well as suggestive statements, could induce false beliefs or false memories in, on average, 20%-50% of the participants who underwent experimental manipulation concerning false past events. A false belief induction may occur after dream interpretation or hypnosis in more than 50% of participants. Personalized suggestion is more effective in inducing memory than the general plausibility of the suggested…
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