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牧野 義隆

doi:10.4992/jjpsy.49.85

EFFECTS OF INFORMATION PROCESSED DURING RETENTION PERIOD ON MEMORY RETRIEVAL

YOSHITAKA MAKINO

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JOURNAL FREE ACCESS

1978 Volume 49 Issue 2 Pages 85-92

DOI https://doi.org/10.4992/jjpsy.49.85

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Published: July 20, 1978 Received: August 08, 1977 Available on J-STAGE: July 16, 2010 Accepted: - Advance online publication: - Revised: -
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Date of correction: July 16, 2010 Reason for correction: - Correction: ABSTRACT Details: Wrong : Information-dependent features of memory retrieval processes were investigated concerning the effects of information-processing during retention period and the last item processed prior to the presentation of the probe on the item recognition tasks.
In two experiments, subjects were presented with the memory lists containing two to five randomly selected digits in the range from one to nine. In Exp. I, the subjects rehearsed vocally the memory list cyclically at a rate of two items every 1sec until the probe was presented. The mean RTs increase linearly with the set size with equal slopes for positive and negative responses. However, RTs for positive responses vary with the distance (D_γ) between the probe and last rehearsed item as shown in Fig. 1.
In Exp. II, two adjacent probes were presented with variable asynchronism. One of the five intervals (IPI: 50, 100, 150, 200, and 300msec) was interposed between the probes. Subjects were asked to decide whether or not both probes belonged to the memory list. The mean RTs increase linearly with the set size with equal slopes for positive and negative responses, and there is no effect of IPI on either the slopes or the intercepts of RT functions. However, RTs for positive responses are affected by the interprsbe distance (D_p) as shown in Fig. 2. The slopes of RT functions for any value of D_p increase as a function of D_p, and D_p has significant interaction with IPI as shown in Table 1.
These results of two experiments suggest that the mean RT for positive responses is a function of the distance between the probe and the last item processed prior to the presentation of the probe. In light of the present data, the various models presented earlier were critically reviewed.
A possible interpretation that appears to be consistent with the present data is follows: The last processed item which contains the positional information of memory list as a product of processing during retention period may be used as a piece of information for the selection of the appropriate probe-encoding strategy, and also the comparison stage may be parallel in its operation.
Right : Information-dependent features of memory retrieval processes were investigated concerning the effects of the last item processed prior to the presentation of the probe on the item recognition tasks. In Exp. I, subjects rehearsed the memory list cyclically until the probe was presented. In Exp. II, they were asked to decide whether or not two adjacent probes presented at variable intervals belonged to the memory list. The results indicate that the mean RT for positive responses is a function of the distance between the probe and the last processed item. The present data suggest that the last processed item may be used as a piece of information for the selection of the appropriate probe-encoding strategy, and also that the comparison stage may be parallel in its operation.

Abstract

Information-dependent features of memory retrieval processes were investigated concerning the effects of the last item processed prior to the presentation of the probe on the item recognition tasks. In Exp. I, subjects rehearsed the memory list cyclically until the probe was presented. In Exp. II, they were asked to decide whether or not two adjacent probes presented at variable intervals belonged to the memory list. The results indicate that the mean RT for positive responses is a function of the distance between the probe and the last processed item. The present data suggest that the last processed item may be used as a piece of information for the selection of the appropriate probe-encoding strategy, and also that the comparison stage may be parallel in its operation.

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