Therapist factors associated with intent to use exposure therapy: a systematic review and meta-analysis.

Exposure therapy is effective but widely underused. Numerous studies indicate therapist factors that might explain this pattern of underuse. This systematic review and meta-analysis synthesised those previous research findings, to identify which therapist factors are clearly associated with their intent to use exposure therapy. A systematic review and six random-effects meta-analyses synthesised studies identified in three databases (Scopus, PsychINFO, Web of Science) and through reference lists and citation searches. Most studies relied on a survey design, resulting in weak quality of research. Twenty-six eligible studies were included in the narrative synthesis, (including 5557 participants), while 21 studies yielded sufficient data to enter the meta-analysis. Medium to large pooled effect sizes indicated that therapists with more positive beliefs, a CBT orientation, and training in exposure therapy were significantly more likely to use exposure. Small pooled effect sizes indicated that older and more anxious therapists were less likely to use exposure. Therapist years of experience was not significantly associated with exposure use. There was no evidence of publication bias. Therapist characteristics clearly play a role in the use of exposure therapy, and future clinical and research work is required to address this limitation in the delivery of this effective therapy.

Sleep deprivation induces fragmented memory loss.

Sleep deprivation increases rates of forgetting in episodic memory. Yet, whether an extended lack of sleep alters the qualitative nature of forgetting is unknown. We compared forgetting of episodic memories across intervals of overnight sleep, daytime wakefulness, and overnight sleep deprivation. Item-level forgetting was amplified across daytime wakefulness and overnight sleep deprivation, as compared to sleep. Importantly, however, overnight sleep deprivation led to a further deficit in associative memory that was not observed after daytime wakefulness. These findings suggest that sleep deprivation induces fragmentation among item memories and their associations, altering the qualitative nature of episodic forgetting.