scholarly journals Absence tasks of the set-size effect in memory-search in the absence of a preprobe delay

1988 ◽  
Vol 16 (4) ◽  
pp. 367-376 ◽  
Author(s):  
Don Diener
Keyword(s):  
Size Effect ◽  
Memory Search ◽  
Set Size

Face and Word Recognition in Patients with Left and Right Hemispheric Lesions: Evidence from Reaction Times and ERPs

2002 ◽  
Vol 13 (1) ◽  
pp. 69-83 ◽  
Author(s):  
Stefan R. Schweinberger ◽  
Thomas Klos ◽  
Werner Sommer
Keyword(s):  
Slow Wave ◽  
Reaction Times ◽  
Memory Search ◽  
Event Related Potentials ◽  
Performance Deficits ◽  
Set Size ◽  
Left Brain ◽  
Related Potentials ◽  
Abstract Words ◽  
Left Brain Damage

Abstract: We recorded reaction times (RTs) and event-related potentials (ERPs) in patients with unilateral lesions during a memory search task. Participants memorized faces or abstract words, which were then recognized among new ones. The RT deficit found in patients with left brain damage (LBD) for words increased with memory set size, suggesting that their problem relates to memory search. In contrast, the RT deficit found in patients with RBD for faces was apparently related to perceptual encoding, a conclusion also supported by their reduced P100 ERP component. A late slow wave (720-1720 ms) was enhanced in patients, particularly to words in patients with LBD, and to faces in patients with RBD. Thus, the slow wave was largest in the conditions with most pronounced performance deficits, suggesting that it reflects deficit-related resource recruitment.

scholarly journals Spatial resolution underlies the set size effect in conjunction search

2010 ◽  
Vol 2 (7) ◽  
pp. 538-538
Author(s):  
K. S. Frieder ◽  
M. Carrasco
Keyword(s):  
Size Effect ◽  
Spatial Resolution ◽  
Conjunction Search ◽  
Set Size

Capacity Limitation in Short-Term Visual Memory for Contour Curvature

Perception ◽  
10.1068/p3365 ◽  
2005 ◽  
Vol 34 (9) ◽  
pp. 1095-1105 ◽  
Author(s):  
Koji Sakai
Keyword(s):  
Size Effect ◽  
Visual Memory ◽  
Weber Fraction ◽  
Short Exposure ◽  
Difference Threshold ◽  
Short Term ◽  
Capacity Limitation ◽  
Set Size ◽  
Short Term Visual Memory ◽  
Contour Curvature

I measured the difference threshold for contour curvature in short-term visual memory (STVM) using a two-interval forced-choice partial discrimination task. In experiments 1 and 2, the study stimulus consisting of 1 to 4 curved contours was briefly presented. It was followed by a single contour stimulus after a retention interval. The subjects judged if the test stimulus had a higher or lower curvature than the corresponding study contour. The results of experiment 1 showed that the Weber fraction increased monotonically with increasing set size. The results of experiment 2 clarified that the set-size effect was not due to a temporal limitation in encoding resulting from the short exposure time. In experiment 3, the study stimuli always consisted of 4 items, but the numbers of memorised items were different in each condition. Nevertheless, the results showed the set-size effect, which indicated that its occurrence depended largely on the capacity limitation in short-term visual memory (STVM) storage. Otherwise, the Weber fraction was not hugely higher for set size 4 compared with set size 1. It was concluded that only 1 object could be retained in STVM with high fidelity, but that at least 4 objects could be retained in STVM with some degree of fidelity.

Null Effect of Set Size in Lexical Decision

1995 ◽  
Vol 81 (1) ◽  
pp. 201-202 ◽  
Author(s):  
Salvador Algarabel ◽  
Juan Carlos Ruiz
Keyword(s):  
Lexical Decision ◽  
Size Effect ◽  
Set Size ◽  
Lexical Decisions ◽  
Null Effect

The effect of set size indicates that recall of a word is greater when its cue is associated with fewer words. This study was designed to replicate this result with lexical decisions of 18 students. In spite of obtaining the set-size effect with cue recall, it was not observed with lexical decision.

An Information Processing Model of Target Acquisition,

1981 ◽  
Vol 25 (1) ◽  
pp. 267-271 ◽  
Author(s):  
Richard M. Johnson
Keyword(s):  
Reaction Times ◽  
Memory Search ◽  
Search Model ◽  
Cognitive Behavior ◽  
Target Acquisition ◽  
Information Processing Model ◽  
Forest Road ◽  
Set Size ◽  
Acquisition Task ◽  
Interactive Variable

The applicability of a serial exhaustive memory scan as a model of the observer's cognitive behavior in a target acquisition task was explored. Reaction times were examined for identification, recognition and set responses to stimulus scenes consisting of armored vehicles varying in view (side, front), background (forest, road, plain), and downlook angle (10°, 20°, 30°). Positive set size was either one, two, or four vehicles. The results were consistent with a serial exhaustive memory search model and provided evidence for background and downlook angle as additive factors and type of response as an interactive variable.

Sign in / Sign up

Export Citation Format

Share Document