Preliminary validation of the Portuguese Edinburgh Handedness Inventory in an adult sample

The Edinburgh Handedness Inventory (EHI) is persistently the most used inventory to evaluate handedness, being neuropsychological investigation and clinical practice. Despite this, there is no information on how this instrument functions in a Portuguese population. The objective of this study was th...

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Bibliographic Details
Published in:Applied neuropsychology. Adult 2017-05, Vol.24 (3), p.275-287
Main Authors: Espírito-Santo, Helena, Pires, Catarina Freitas, Garcia, Inês Queiroz, Daniel, Fernanda, Silva, Alexandre Gomes da, Fazio, Rachel L.
Format: Article
Language:English
Subjects:
Adolescent
Adult
Age Factors
Aged
Analysis of Variance
Edinburgh Handedness
Female
Functional Laterality - physiology
hand preference
handedness
Humans
inventory
Male
Middle Aged
Neuropsychological Tests
Portugal
psychometric properties
Psychometrics
Reproducibility of Results
Socioeconomic Factors
Translating
Young Adult
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Summary:The Edinburgh Handedness Inventory (EHI) is persistently the most used inventory to evaluate handedness, being neuropsychological investigation and clinical practice. Despite this, there is no information on how this instrument functions in a Portuguese population. The objective of this study was therefore to examine the sociodemographic influences on handedness and establish psychometric properties of the EHI in a Portuguese sample. The sample consisted of 342 adults (157 men and 185 women), assessed with a battery of neuropsychological tests. The mean EHI Laterality Quotient was 63.52 (SD = 38.00). A much high percentage of ambiguous-handedness compared to left-handedness was detected. An inconsistency was found between the preference for formal education activities (writing-drawing-using scissors) and the remaining EHI activities. From sociodemographic variables, only age, area, and regions of residence showed significant influence on EHI scores. The reliability and temporal reliability of EHI were adequate. Confirmatory factor analysis indicated a one-factor model (χ 2 /df = 2.141; TLI = 0.972; CFI = 0.979; RMSEA = 0.058). The inconsistency between formal education and nonformal activities could be an indicator of social pressure. The present data give support for the notion that handedness measured by EHI is potentially sensitive to sociodemographic and cultural influences.
ISSN:2327-9095
2327-9109
DOI:10.1080/23279095.2017.1290636