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Results for “Serial Learning”

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PubMed1975

Successive processing of color and form from brief visual displays.

Visual processing of multidimensional stimuli was explored with a task designed to determine the number of separable perceptual stages operating and the nature of their relationship. Displays containing 2 rows of 5 randomly selected letters were presented briefly. In half the displays, 1 of the 10 letters was red and the other 9 black; in the remaining displays, all 10 letters were black. Ss made two responses to each display; color detection, in which the presence or absence of a red letter was judged, and letter naming, in which Ss reported as many letters as they could. The findings suggested that the two tasks were performed by separate perceptual mechanisms and the selection of letters to be named could be influenced by the information acquired by the color-detection mechanism.

Cognition↗
PubMed1975

Serial processing shown by mutual masking of icons.

In a procedure called mutual masking, two compound words were tachistoscopically exposed successively at the same location. Perceptual accuracy for both words was examined. With fixation at the center of the arrays, Ss often identified the component at the left within the temporally first word and at the right within the second. These results imply a left-to-right serial processing. With fixation on begining or end component, Ss tended to identify the component away from fixation of the first word and the fixated part of the second. This implies scanning from periphery toward fixation. Therefore, sequential processing of iconic information was obtained, with direction of processing determined by specific conditions.

Adolescent↗
PubMed1976

Recall of letters from the left and right visual half-fields under unilater and bilateral presentation.

Bilateral presentation in the visual half-field greatly increases superiority of the right visual half-field in tachistoscopic recognition of words when fixation is controlled using a center digit. Two experiments explored left-right asymmetry with bilateral presentation on a visual half-field short-term memory task, with fixation controlled by a sequence of letters at fixation. A total of 40 subjects served in the two experiments, which compared recall under unilateral versus bilateral presentation to the visual half-field. Bilateral presentation increased over-all recall from the last serial position but did not alter asymmetry of the visual half-field. As in previous experiments, the superiority of the right visual half-field was greatest from the initial serial positions. It was concluded that asymmetry of the visual half-field on this recall task with controlled fixation depends primarily on masking and short-term memory but is independent of unilateral-bilateral presentation.

Eidetic Imagery↗