Titel
The Handedness Index Practical Task (HI₂₀): An economic behavioural measure for assessing manual preference
Autor*in
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Abstract
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 (Mage = 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.
Stichwort
Handednesshand preferencepractical taskbehavioural measureself-reports
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
Laterality
Band
27
Ausgabe
3
ISSN
1357-650X
Erscheinungsdatum
2021
Seitenanfang
273
Seitenende
307
Publication
Informa UK Limited
Erscheinungsdatum
2021
Zugänglichkeit
Rechteangabe
© 2021 The Author(s)
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