Abstract
Three experiments were designed to investigate whether the characteristic function relating response time to stimulus orientation reflects the observer imagining the rotation of the stimulus to upright (the “image rotation” hypothesis) or rotation of an internal reference frame in response to the misoriented stimulus (the “frame rotation” hypothesis). Identification times in response to misoriented words were measured in Experiment 1, whereas in Experiments 2 and 3, lexical decision times in response to misoriented letter strings were measured. Trials occurred in blocks; words within a block were presented at the same orientation. It was argued that this mode of presentation would facilitate the use of a frame rotation strategy by allowing for a gradual readjustment of an internal reference frame. The characteristic “mental rotation” function was observed in all three experiments. However, the data indicated that observers continued to imagine the rotation of the word to upright in each trial; there was no evidence of readjustment of an internal reference frame. An additional finding of interest occurred in Experiment 1, in which observers identified the same set of misoriented words across two sessions. The identification times were faster, and the slope of the mental rotation function was lower, in the second session. These results are discussed as in relation to the image rotation hypothesis of mental rotation and to “instance-based skill acquisition” (Masson, 1986) in word recognition.
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Preparation of this report was supported by NASA Cooperative Agreement NCC 2-327 to San Jose State University, Kevin Jordan, Project Director.
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Jordan, K., Huntsman, L.A. Image rotation of misoriented letter strings: Effects of orientation cuing and repetition. Perception & Psychophysics 48, 363–374 (1990). https://doi.org/10.3758/BF03206688
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DOI: https://doi.org/10.3758/BF03206688