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352

Title *

One and only SNARC? A Registered Report on the SNARC Effect’s Range Dependencyuse asterix (*) to get italics

Authors *

Lilly Roth, John Caffier, Ulf-Dietrich Reips, Hans-Christoph Nuerk, Krzysztof CiporaPlease use the format "First name initials family name" as in "Marie S. Curie, Niels H. D. Bohr, Albert Einstein, John R. R. Tolkien, Donna T. Strickland"

Year *

2022

Picture

Abstract *

<p>Numbers are associated with space, but it is unclear how flexible these associations are. In this study, we will investigate whether the SNARC effect (Spatial-Numerical Association of Response Codes; Dehaene et al., 1993), which describes faster responses to small/large number magnitude with the left/right hand, respectively, is fully flexible (depending only on relative magnitude within a stimulus set), or not (depending on absolute magnitude as well). Evidence for relative-magnitude dependency comes from studies observing that numbers 4 and 5 were associated with the right when presented in a 0 – 5 range but with the left in a 4 – 9 range (Dehaene et al., 1993; Fias et al., 1996). However, this important conclusion was drawn solely from the absence of evidence for absolute-magnitude dependency in frequentist analysis in underpowered studies. A closer inspection of those descriptive data suggests absolute magnitude also matters. Hence, we will conduct a close replication of Dehaene et al.’s (1993) Experiment 3 and a conceptual replication considering recent advances in SNARC research, investigating absolute- and relative-magnitude dependency by comparing response patterns to critical numbers, intercepts and SNARC slopes across ranges with Bayesian statistics. To achieve a probability of .90 for detecting moderate evidence (Bayes Factor above 3 for Cohen’s d = 0.15 or below 1/3 for d = 0), we will conduct each experiment online with maximum 800 participants (optional stopping at moderate evidence). We hypothesize that both absolute and relative magnitude influence spatial-numerical associations, suggesting the SNARC effect operates on flexible and absolute number representations simultaneously.</p>

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Keywords (optional)

spatial-numerical associations, SNARC effect, mental number line, replication, online experiment

Methods that require specific expertise (optional)

NonePlease indicate the methods that may require specialised expertise during the peer review process (use a comma to separate various required expertises).

Thematic fields *

Social sciences

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Submission date

2022-11-30 12:36:08

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Robert McIntosh

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