Perceptual and Conceptual Factors in Distortions in Memory for Graphs and Maps

• Published in: Journal of experimental psychology. General Vol. 118; no. 4; pp. 387 - 398
• Main Authors: Tversky, Barbara, Schiano, Diane J
• Format: Journal Article
• Language: English
• Published: Washington, DC American Psychological Association 01-12-1989
• Subjects: Adult; Biological and medical sciences; Concept Formation; Conditioning; Discrimination Learning; Form Perception; Fundamental and applied biological sciences. Psychology; Human; Humans; Learning. Memory; Memory; Mental Recall; Optical Illusions; Orientation; Pattern Recognition, Visual; Perceptual Distortion; Psychology; Psychology. Psychoanalysis. Psychiatry; Psychology. Psychophysiology; Stimulus Parameters; Visual Displays; Human; Graphics; Mental representation; Memory; Vision; Spatial orientation; Map(geography); Space perception; Visual perception; Symmetry
• ISSN: 0096-3445; 1939-2222
• DOI: 10.1037/0096-3445.118.4.387

We propose that representations of visual stimuli are a consequence of both perceptual and conceptual factors that may be revealed in systematic errors in memory. Three experiments demonstrated increased (horizontal or vertical) symmetry in perception and memory of nearly symmetric curves in graphs and rivers in maps. Next, a conceptual factor, an accompanying description biasing toward symmetry or asymmetry, also distorted memory in the expected direction for the symmetric descriptions. In the two final experiments, we investigated conceptual factors in selection of a frame of reference. Subjects remembered lines in graphs, but not in maps, as closer to the imaginary 45° line. Combined with earlier research, this suggests that the reference frame for map lines is the canonical axes and for graph lines, the imaginary 45° line.