Statistical numeracy as a moderator of (pseudo)contingency effects on decision behavior

Pseudocontingencies denote contingency estimates inferred from base rates rather than from cell frequencies. We examined the role of statistical numeracy for effects of such fallible but adaptive inferences on choice behavior. In Experiment 1, we provided information on single observations as well a...

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Hauptverfasser: Fleig, Hanna Sophie (VerfasserIn) , Rummel, Jan (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 10 February 2017
In: Acta psychologica
Year: 2017, Jahrgang: 174, Pages: 68-79
ISSN:1873-6297
DOI:10.1016/j.actpsy.2017.01.002
Online-Zugang:Verlag, Volltext: http://dx.doi.org/10.1016/j.actpsy.2017.01.002
Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S000169181630172X
Volltext
Verfasserangaben:Hanna Fleig, Thorsten Meiser, Florence Ettlin, Jan Rummel

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520 |a Pseudocontingencies denote contingency estimates inferred from base rates rather than from cell frequencies. We examined the role of statistical numeracy for effects of such fallible but adaptive inferences on choice behavior. In Experiment 1, we provided information on single observations as well as on base rates and tracked participants' eye movements. In Experiment 2, we manipulated the availability of information on cell frequencies and base rates between conditions. Our results demonstrate that a focus on base rates rather than cell frequencies benefits pseudocontingency effects. Learners who are more proficient in (conditional) probability calculation prefer to rely on cell frequencies in order to judge contingencies, though, as was evident from their gaze behavior. If cell frequencies are available in summarized format, they may infer the true contingency between options and outcomes. Otherwise, however, even highly numerate learners are susceptible to pseudocontingency effects. 
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