Visual enumeration under load: also subitizing needs attention
نویسندگان
چکیده
منابع مشابه
Mathematics anxiety affects counting but not subitizing during visual enumeration.
Individuals with mathematics anxiety have been found to differ from their non-anxious peers on measures of higher-level mathematical processes, but not simple arithmetic. The current paper examines differences between mathematics anxious and non-mathematics anxious individuals in more basic numerical processing using a visual enumeration task. This task allows for the assessment of two systems ...
متن کاملSubitizing requires attention
While counting objects is typically a slow, serial process, enumerating about four or fewer objects has been considered to be a relatively effortless, parallel, and even preattentive process often referred to as subitizing. However, by combining a subitizing task with an attentional blink task, we show that subitizing is systematically affected by a closely preceding letter identification task....
متن کاملA Computational Model of the Role of Attention in Subitizing and Enumeration
Recent studies in the perception of numerosity have indicated that subitizing (the rapid and accurate enumeration of small quantities) requires attention. We present a novel computational model of enumeration in which attention unifies distinct processes of numerosity approximation, subitizing, and explicit counting. We demonstrate how this model accounts for both the reaction time results from...
متن کاملSubitizing and similarity: toward a pattern-matching theory of enumeration.
Pattern-matching theories of subitizing claim that subjects enumerate displays with small numerosities by retrieving numerical responses associated with similar displays experienced in the past. Such retrieval implies that displays with small numerosities are similar to other displays of the same numerosity and dissimilar to other displays of different numerosities. These hypotheses were tested...
متن کاملHow many can you see at a glance? The role of attention in visual enumeration
There is considerable controversy as to how the brain extracts numerosity information from a visual scene and as to how much attention is needed for this process. Traditionally, it has been assumed that visual enumeration is subserved by two functionally distinct mechanisms: the fast and accurate apprehension of 1 to about 4 items, a process termed “subitizing”, and the slow and error-prone enu...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2010
ISSN: 1534-7362
DOI: 10.1167/7.9.705