Published In

Intelligence

Document Type

Pre-Print

Publication Date

2023

Subjects

Dunning-Kruger Effect, Mere Statistical Explanations; Self-Assessed Intelligence, Measurement Theory, Levels of Measurement

Abstract

Gignac and Zajenkowski (2020) find that “the degree to which people mispredicted their objectively measured intelligence was equal across the whole spectrum of objectively measured intelligence”. This Comment shows that Gignac and Zajenkowski’s (2020) finding of homoscedasticity is likely the result of a recoding choice by the experimenters and does not in fact indicate that the Dunning-Kruger Effect is a mere statistical artifact. Specifically, Gignac and Zajenkowski (2020) recoded test subjects’ responses to a question regarding self-assessed comparative IQ onto a linear IQ scale when a normal IQ scale would likely have been more appropriate. More generally, researchers studying self-assessed intelligence should be aware of potential measurement problems that may arise when transforming an ordinal scale onto an interval scale.

Rights

© Copyright the author(s)

Description

Uncorrected pre-print. Please cite published version, available at https://authors.elsevier.com/a/1gg50aSXM2aH4 (free until April 15, 2023) https://www.sciencedirect.com/science/article/pii/S0160289623000132 (after April 15, 2023)

DOI

10.1016/j.intell.2023.101732

Persistent Identifier

https://archives.pdx.edu/ds/psu/39834

Included in

Philosophy Commons

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