The Handedness Index Practical Task (HI 20 ): An economic behavioural measure for assessing manual preference

Autor(en)

Sylvia Kirchengast, Martin Voracek, Sonja Kuderer, Christoph Rotter

Abstrakt

Because self-report hand preference measures are limited to investigating cognitive aspects of manual laterality, valid, easy-to-administer and economic behavioural methods are needed for capturing the motoric component of handedness. Therefore, this study introduces the Handedness Index Practical Task (HI20) and tests it in a sample of 206 students (M-age = 23.79 years, SDage = 3.01 years), half of whom were self-specified left-handers. After confirming good reliabilities at the subscale and total scale levels, k-means cluster analysis allowed an empirically based partitioning of test subjects into left- (n = 72), mixed- (n = 23) and right-handers (n = 111). To validate this categorization and the HI20 index, data were compared with the Edinburgh Handedness Inventory (EHI), EHI-short, HI22 and hand grip strength. The congruency between the HI20 clusters and alternative categorizations ranged from 95.6% to 84.0%, while the clusters explained large portions of variance in grip strength differences. The HI20 sub- and total scores showed strong correlations with other measures of lateral preference. Altogether, the freely available HI20 emerges as a reliable and valid alternative for behavioural handedness assessment, whose power lies in explaining differential hand use patterns and enabling fine-grained examinations of handedness.

Organisation(en)

Department für Evolutionäre Anthropologie, Institut für Psychologie der Kognition, Emotion und Methoden

Journal

Laterality: Asymmetries of Body, Brain and Cognition

Band

27

Seiten

273-307

Anzahl der Seiten

35

ISSN

1357-650X

DOI

https://doi.org/10.1080/1357650X.2021.1990312

Publikationsdatum

11-2021

Peer-reviewed

Ja

ÖFOS 2012

106018 Humanbiologie, 501011 Kognitionspsychologie

Schlagwörter

ASJC Scopus Sachgebiete

Allgemeine Psychologie, Arts and Humanities (miscellaneous)

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/204e0afe-e763-4a85-992d-4132e0ac8f53