ERIC Number: ED278898
Record Type: RIE
Publication Date: 1987-Apr
Reference Count: 0
Long-Term Memory for Pictures under Conditions of Difficult Foil Discriminability.
Homa, Donald; Viera, Cynthia
Research has demonstrated that subjects are sensitive to both thematic and non-thematic information in pictorial stimuli. Three experiments were conducted to investigate memory for pictures under conditions of difficult foil discriminability and lengthy retention intervals. The foils differed from the studied persons in the number and quality of non-thematic details that were added or deleted. In each experiment, college students viewed colored photographs, black and white photographs, elaborated line drawings, and unelaborated line drawings. Subjects (N=81) in Experiment 1 were given an old/new test either immediately, 1 day, 1 week, or 1 month after viewing the pictures. Subjects (N=92) in Experiment 2 were given a 4-alternative forced-choice test at the same time intervals. Subjects (N=40) in Experiment 3 were given the old/new test 3 months after viewing the pictures. The results revealed that, with a yes/no procedure, performance was best on colored photographs, with performance on each stimulus type additive across the retention interval. For the forced-choice test, performance on colored photographs and unelaborated line drawings was best, with performance again additive across delay. A confusion analysis indicated errors were based on physical similarity even after 3 months. These results refute the hypothesis that the memorial representations for pictorial variations converge to a common, thematic code after lengthy delays; rather, non-thematic, analogue information is encoded and preserved for lengthy time periods. (Author/NB)
Publication Type: Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A
Note: Paper presented at the Annual Meeting of the Western Psychological Association (66th, Seattle, WA, May 1-4, 1986).