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Full-Text Articles in Social and Behavioral Sciences
Faster Than The Speed Of Rejection: Object Identification Processes During Visual Search For Multiple Targets, Hayward J. Godwin, Stephen Walenchok, Joseph W. Houpt, Michael C. Hout, Stephen D. Goldinger
Faster Than The Speed Of Rejection: Object Identification Processes During Visual Search For Multiple Targets, Hayward J. Godwin, Stephen Walenchok, Joseph W. Houpt, Michael C. Hout, Stephen D. Goldinger
Joseph W. Houpt
When engaged in a visual search for two targets, participants are slower and less accurate in their responses, relative to their performance when searching for singular targets. Previous work on this “dual-target cost” has primarily focused on the breakdown of attention guidance when looking for two items. Here, we investigated how object identification processes are affected by dual-target search. Our goal was to chart the speed at which distractors could be rejected, in order to assess whether dual-target search impairs object identification. To do so, we examined the capacity coefficient, which measures the speed at which decisions can be made, …
Can Two Dots Form A Gestalt? Measuring Emergent Features With The Capacity Coefficient, Robert X.D. Hawkins, Joseph W. Houpt, Ami Eidels, James T. Townsend
Can Two Dots Form A Gestalt? Measuring Emergent Features With The Capacity Coefficient, Robert X.D. Hawkins, Joseph W. Houpt, Ami Eidels, James T. Townsend
Joseph W. Houpt
While there is widespread agreement among vision researchers on the importance of some local aspects of visual stimuli, such as hue and intensity, there is no general consensus on a full set of basic sources of information used in perceptual tasks. Gestalt theories place particular value on emergent features, which are based on the higher-order relationships among elements of a stimulus rather than local properties. Thus, arbitrating between different accounts of features is an important step in arbitrating between local and Gestalt theories of perception in general. In this paper, we present the capacity coefficient from Systems Factorial Technology (SFT) …
Working Memory’S Workload Capacity, Andrew Heathcote, James R. Coleman, Ami Eidels, Jason M. Watson, Joseph W. Houpt, David L. Strayer
Working Memory’S Workload Capacity, Andrew Heathcote, James R. Coleman, Ami Eidels, Jason M. Watson, Joseph W. Houpt, David L. Strayer
Joseph W. Houpt
We examined the role of dual-task interference in working memory using a novel dual 2-back task that requires a redundant-target response (i.e., that neither the auditory nor visual stimulus occurred two back vs. one or both occurred two back) on every trial. Comparisons with performance on single 2 back trials (i.e., with only auditory or only visual stimuli) showed dual-task demands reduced both speed and accuracy. Our task design enabled a novel application of Townsend and Nozawa’s (1995) workload capacity measure, which revealed that the decrement in dual 2-back performance was mediated by sharing of a limited amount of processing …