Evidence for a shared mechanism used in multiple-object tracking and subitizing

Chesney, Dana L.; Haladjian, Harry Haroutioun

doi:10.3758/s13414-011-0204-9

Cited by 39 publications

(37 citation statements)

References 64 publications

(94 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Multiple-object tracking, for example, is often considered to be limited by a four-item limit, but this conclusion is being challenged 60,96,97 . A similar reexamination may be necessary for subitizing limits 98 . Finally, resource model approaches have now begun to be applied to a range of issues in neuroscience, such as working memory development 99 , aging 77,100 and pathology 78 , where changes in memory quality may have a vital and previously overlooked role.…”

Section: Open Questionsmentioning

confidence: 99%

Changing concepts of working memory

2014

View full text Add to dashboard Cite

Working memory is widely considered to be limited in capacity, holding a fixed, small number of items, such as Miller's ‘magical number’ seven or Cowan's four. It has recently been proposed that working memory might better be conceptualized as a limited resource that is distributed flexibly among all items to be maintained in memory. According to this view, the quality rather than the quantity of working memory representations determines performance. Here we consider behavioral and emerging neural evidence for this proposal.

show abstract

Section: Open Questionsmentioning

confidence: 99%

Changing concepts of working memory

2014

View full text Add to dashboard Cite

show abstract

“…Dehaene and Changeux (1993) offered a similarly item-based model capable of simultaneous and serial enumerations. Chesney and Haladjian (2011) noted that the accuracy of such item-based models depends upon each item being tallied exactly once. If items were missed, such models would underestimate sets' numerosities.…”

Section: Visual Nesting Impacts Approximate Number System Estimationmentioning

confidence: 99%

Visual nesting impacts approximate number system estimation

Chesney

Gelman

2012

Atten Percept Psychophys

Self Cite

View full text Add to dashboard Cite

The approximate number system (ANS) allows people to quickly but inaccurately enumerate large sets without counting. One popular account of the ANS is known as the accumulator model. This model posits that the ANS acts analogously to a graduated cylinder to which one "cup" is added for each item in the set, with set numerosity read from the "height" of the cylinder. Under this model, one would predict that if all the to-be-enumerated items were not collected into the accumulator, either the sets would be underestimated, or the misses would need to be corrected by a subsequent process, leading to longer reaction times. In this experiment, we tested whether such miss effects occur. Fifty participants judged numerosities of briefly presented sets of circles. In some conditions, circles were arranged such that some were inside others. This circle nesting was expected to increase the miss rate, since previous research had indicated that items in nested configurations cannot be preattentively individuated in parallel. Logically, items in a set that cannot be simultaneously individuated cannot be simultaneously added to an accumulator. Participants' response times were longer and their estimations were lower for sets whose configurations yielded greater levels of nesting. The level of nesting in a display influenced estimation independently of the total number of items present. This indicates that miss effects, predicted by the accumulator model, are indeed seen in ANS estimation. We speculate that ANS biases might, in turn, influence cognition and behavior, perhaps by influencing which kinds of sets are spontaneously counted.

show abstract

“…Once a pointer is assigned, it can attach to and follow a moving object over time. Visual indexes also serve localization and enumeration abilities (Chesney & Haladjian, 2011;Haladjian & Pylyshyn, 2011;Trick & Pylyshyn, 1994), facilitate visual search (Burkell & Pylyshyn, 1997), and are considered the first step in solving the binding problem (Treisman, 1996;Wolfe, 2012;Wolfe & Cave, 1999) by providing the core structure for building object-based representations.…”

Section: Forms Of Selective Attention: Object-based Attentionmentioning

confidence: 99%

On the evolution of conscious attention

Haladjian

Montemayor

2014

Psychon Bull Rev

Self Cite

View full text Add to dashboard Cite

This paper aims to clarify the relationship between consciousness and attention through theoretical considerations about evolution. Specifically, we will argue that the empirical findings on attention and the basic considerations concerning the evolution of the different forms of attention demonstrate that consciousness and attention must be dissociated regardless of which definition of these terms one uses. To the best of our knowledge, no extant view on the relationship between consciousness and attention has this advantage. Because of this characteristic, this paper presents a principled and neutral way to settle debates concerning the relationship between consciousness and attention, without falling into disputes about the meaning of these terms. A decisive conclusion of this approach is that extreme views on the relationship between consciousness and attention must be rejected, including identity and full dissociation views. There is an overlap between the two within conscious attention, but developing a full understanding of this mechanism requires further empirical investigations.

show abstract

Evidence for a shared mechanism used in multiple-object tracking and subitizing

Cited by 39 publications

References 64 publications

Changing concepts of working memory

Changing concepts of working memory

Visual nesting impacts approximate number system estimation

On the evolution of conscious attention

Contact Info

Product

Resources

About