Visual, Kinaesthetic and Cross‐modal Judgements of Length by Normal and Clumsy Children

Abstract

SUMMARY The ability of normal and clumsy children to match the length of lines within and between the modalities of vision and kinaesthesis was studied. The clumsy children showed perceptual impairments, as indicated by their poor performance on the visual, kinaesthetic and cross‐modal judgements of length and also by their low scores on spatial subtests of the wise. Variations in motor skill correlated with performance on the visual perceptual measures, but not with performance on the kinaesthetic or cross‐modal tasks. The idea that clumsiness may be caused by an impairment of visual perception is discussed, together with some alternative interpretations of this pattern of results. RÉSUMÉ Appréciations visuelle, kinesthésique et croisée de la longueur chez les enfants normaux et maladroits La capacité des enfants normaux et maladroits d'apparier des longueurs de lignes á l'aide de la vision et du sens kinesthésique a étéétudiée. Les enfants maladroits présentaient une altération de la perception soulignée par leurs médiocres résultats aux jugements de longueur visuelle, kinesthésique et croisée ainsi que par leurs faibles scores aux sub‐tests spatiaux du WISC. Les variations de l'habileté motrice étaient corrélées avec les performances des appréciations visuo‐perceptives mais non avec les tâches kinesthésiques ou croisées. L'idée que la maladresse puisse être causée par une atteinte de la perception visuelle est discutée et comparée à des interprétations autres de l'ensemble de ces résultats. ZUSAMMENFASSUNG Visuelle, kinaesthetische und kreuzmodale Längenbeurteilung durch normale und ungeschickte Kinder Es wurde untersucht, inwieweit normale und ungeschickte Kinder in der Lage sind, die Länge von Linien innerhalb und zwischen den Modalitäten Sehen und Kinaesthetik einuordnen. Die ungeschickten Kinder zeigten Perceptionsstörungen, die sich in ihrer schlechten Leistung bei der visuellen, kinaesthetischen und kreuzmodalen Längenbeurteilung äußerte, sowie in ihrem schlechten Abschneiden bei den Aufgaben zur Raumerfassung beim WISC! Unterschiede bei den motorischen Fähigkeiten korrelierten mit den Leistungen bei visuellen Perceptionsaufgaben, nicht aber mit den Leistungen bei kinaesthetischen oder kreuzmodalen Aufgaben. Es wird diskutiert, ob die Ungeschicklichkeit durch eine Störung der visuellen Perception bedingt sein kann und welche anderen Interpretationen dieser Befunde in Frage kommen. RESUMEN Juicios de longitud visuales, cinestésicos y modales‐cruzados en niños normales y en torpes Se estudió la habilidad de niños normales y torpes para aparear la longitud de lineas dentro y entre modalidades de visión y cinestésicas. Los niños torpes mostraron alteraciones perceptivas indicadas por realizacion pobre en sus juicios visuales, cinestésicos y modalescruzados de la longitud y también por sus bajos puntajes en los sub‐tests espaciales en el WISC. Las variaciones en la actividad motora se correlacionaban con la realización en las mediciones perceptivas visuales, pero no con la realización en las tareas cinestésic...

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