Number and Continuous Magnitude Processing Depends on Task Goals and Numerosity Ratio.

ABSTRACT: A large body of evidence shows that when comparing non-symbolic numerosities, performance is influenced by irrelevant continuous magnitudes, such as total surface area, density, etc. In the current work, we ask whether the weights given to numerosity and continuous magnitudes are modulated by top-down and bottom-up factors. With that aim in mind, we asked adult participants to compare two groups of dots. To manipulate task demands, participants reported after every trial either (1) how accurate their response was (emphasizing accuracy) or (2) how fast their response was (emphasizing speed). To manipulate bottom-up factors, the stimuli were presented for 50 ms, 100 ms or 200 ms. Our results revealed (a) that the weights given to numerosity and continuous magnitude ratios were affected by th

SUBMITTER: Leibovich-Raveh T 

PROVIDER: S-EPMC6634598 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature