title: Sex differences in number line estimation: The role of numerical estimation.
abstract: Sex differences in mathematical performance have frequently been examined over the last decades indicating an advantage for males especially when numerical problems cannot be solved by (classroom-)learnt strategies and/or estimation. Even in basic numerical tasks such as number line estimation, males were found to outperform females - with sex differences argued to emerge from different solution strategies applied by males and females. We evaluated the latter using two versions of the number line estimation task: a bounded and an unbounded task version. Assuming that women tend more strongly to apply known procedures, we expected them to be at a particular disadvantage in the unbounded number line estimation task, which is less prone to be solved by specific strategies such as proportion judgement but requires numerical estimation. Results confirmed more pronounced sex differences for unbounded number line estimation with males performing significantly more accurately in this task version. This further adds to recent evidence suggesting that estimation performance in the bounded task version may reflect solution strategies rather than numerical estimation. Additionally, it indicates that sex differences regarding the spatial representation of number magnitude may not be universal, but associated with spatial-numerical estimations in particular.
authors.affiliation: Hogrefe AG, Bern, Switzerland.
authors.forename: Regina M
authors.identifier: http://orcid.org/0000-0002-3055-865X
authors.initials: RM
authors.lastname: Reinert
authors.affiliation: Knowledge Media Research Center, Tuebingen, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Huber
authors.affiliation: Knowledge Media Research Center, Tuebingen, Germany.|Department of Psychology, Eberhard-Karls University, Tuebingen, Germany.
authors.forename: Hans-Christoph
authors.initials: HC
authors.lastname: Nuerk
authors.affiliation: Knowledge Media Research Center, Tuebingen, Germany.|Department of Psychology, Eberhard-Karls University, Tuebingen, Germany.
authors.forename: Korbinian
authors.initials: K
authors.lastname: Moeller
mesh_terms: D000293:Adolescent; D000328:Adult; D003210:Concept Formation; D005260:Female; D006801:Humans; D008297:Male; D008433:Mathematics; D008606:Mental Processes / Q000502:physiology*; D011340:Problem Solving / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology; D012737:Sex Factors; D013028:Space Perception / Q000502:physiology*; D055815:Young Adult
keywords: efficient estimating; sex-related differences; unbounded number line estimation task