Previously we pointed out similarities between patterns of delayed incorporations of daytime stimuli into dreams and delayed memory processes in rats. In commenting upon this article, Roll argued that this reductionistic leap is unwarranted. We contend that it would be remiss not to make note of this potential connection, especially in view of recent major contributions of animal research to the understanding of REM sleep and dreams. We also suggest that the disruption-avoidance-adaptation model constitutes a preferable psychological explanation for the dream-lag effect than Roll's psychoanalytic model of repression and repetition compulsion.
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