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Measuring acuity of the approximate number system reliably and validly: the evaluation of an adaptive test procedure

Overview of attention for article published in Frontiers in Psychology, January 2013
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  • Above-average Attention Score compared to outputs of the same age and source (53rd percentile)

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Title
Measuring acuity of the approximate number system reliably and validly: the evaluation of an adaptive test procedure
Published in
Frontiers in Psychology, January 2013
DOI 10.3389/fpsyg.2013.00510
Pubmed ID
Authors

Marcus Lindskog, Anders Winman, Peter Juslin, Leo Poom

Abstract

Two studies investigated the reliability and predictive validity of commonly used measures and models of Approximate Number System acuity (ANS). Study 1 investigated reliability by both an empirical approach and a simulation of maximum obtainable reliability under ideal conditions. Results showed that common measures of the Weber fraction (w) are reliable only when using a substantial number of trials, even under ideal conditions. Study 2 compared different purported measures of ANS acuity as for convergent and predictive validity in a within-subjects design and evaluated an adaptive test using the ZEST algorithm. Results showed that the adaptive measure can reduce the number of trials needed to reach acceptable reliability. Only direct tests with non-symbolic numerosity discriminations of stimuli presented simultaneously were related to arithmetic fluency. This correlation remained when controlling for general cognitive ability and perceptual speed. Further, the purported indirect measure of ANS acuity in terms of the Numeric Distance Effect (NDE) was not reliable and showed no sign of predictive validity. The non-symbolic NDE for reaction time was significantly related to direct w estimates in a direction contrary to the expected. Easier stimuli were found to be more reliable, but only harder (7:8 ratio) stimuli contributed to predictive validity.

X Demographics

X Demographics

The data shown below were collected from the profiles of 5 X users who shared this research output. Click here to find out more about how the information was compiled.
Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 87 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 2 2%
Sweden 1 1%
Chile 1 1%
Canada 1 1%
United Kingdom 1 1%
Unknown 81 93%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 19 22%
Researcher 16 18%
Student > Master 12 14%
Student > Bachelor 12 14%
Student > Doctoral Student 5 6%
Other 16 18%
Unknown 7 8%
Readers by discipline Count As %
Psychology 50 57%
Social Sciences 5 6%
Neuroscience 4 5%
Agricultural and Biological Sciences 2 2%
Medicine and Dentistry 2 2%
Other 10 11%
Unknown 14 16%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 4. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 22 January 2014.
All research outputs
#7,977,283
of 24,943,708 outputs
Outputs from Frontiers in Psychology
#11,349
of 33,669 outputs
Outputs of similar age
#84,409
of 292,957 outputs
Outputs of similar age from Frontiers in Psychology
#448
of 969 outputs
Altmetric has tracked 24,943,708 research outputs across all sources so far. This one has received more attention than most of these and is in the 67th percentile.
So far Altmetric has tracked 33,669 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 13.1. This one has gotten more attention than average, scoring higher than 66% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 292,957 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 71% of its contemporaries.
We're also able to compare this research output to 969 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 53% of its contemporaries.