PSYCO258 Lecture Notes - Lecture 21: Mind-Wandering, Cognitive Revolution, Neurology
21 Mar 2019
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Mental imagery: experiencing a sensory impression in the absence of sensory input. Visual imagery: seeing in the absence of a visual stimulus. Conceptual-peg hypothesis: demonstrates how images create cues that can help with memorizing ordered lists. Shepard and meltzer (1971): participants made judgments about whether stimuli shown at different rotations were the same shape. Participants took longer to respond to trials involving longer rotations. Example of mental chronometry (using rt in perceptual/motor tasks to infer constituent cognitive processes involved in a judgment) Kosslyn (1973): participants memorized picture (below), then were asked to move from one part to another in memorized representation, indicating when they reached their. Participants took longer to mentally" move longer than shorter distances, consistent with a spatial component in imagery. But lea (1975) suggested a possible alternative explanation for mental scanning results: more distractions when scanning longer distances may have increased reaction time (i. e. interesting things encountered during the mental scan may be responsible)
