Are IQ tests enough to measure intelligence in the blind? Brief review of available and potential methods to estimate intelligence in the blind

Rączy, Katarzyna; Korczyk, Maksymilian

doi:10.4467/20843895rk.18.002.9756

Cited by 1 publication

(1 citation statement)

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“…Nonverbal intelligence tests adapted for use among blind individuals, for example, are often based on models of visual processing, despite using haptic stimuli (Atkins, 2012). This can make them more difficult and raise questions about their validity (Mazella et al, 2014(Mazella et al, , 2016Rączy & Korczyk, 2018;Tobin & Hill, 2011). Namely, even when familiar tools can technically be administered to blind individuals (e.g., tests with verbal stimuli), their validity in this population has not been appropriately evaluated.…”

Section: Introductionmentioning

confidence: 99%

Validation of the Tactual Span in individuals with congenital and acquired blindness

Heled

Oshri

2021

British Journal of Visual Impairment

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Neuropsychological assessment tools for individuals with blindness are relatively scarce. In the current study, we assessed the validity of the Tactual Span, a task aimed at evaluating tactile working memory. During the task, the fingers of both hands are touched in specific sequences of ascending difficulty, which participants are asked to repeat in exact and reverse order. Twelve participants with congenital blindness and 13 with acquired blindness were examined alongside 18 sighted controls, matched to the experimental group with respect to age and education. Participants performed the Tactual Span and three additional tasks assessing working memory in the auditory modality, as well as a Semantic Fluency test. Results showed that the Tactual Span was significantly correlated with most of the other working memory measures, in all groups, but not with the Semantic Fluency test. In addition, the congenital and acquired blindness groups performed similarly to one another and better than sighted controls on most working memory tasks, but not on the Semantic Fluency test. Findings suggest that the Tactual Span is a feasible task for measuring tactile working memory in individuals with congenital and acquired blindness. Therefore, it can expand the cognitive assessment toolbox of professionals working with blind individuals and increase the strength of conclusions drawn from cognitive assessments in educational and vocational settings.

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Section: Introductionmentioning

confidence: 99%