31 trainable mentally retarded children were divided into lateralized and mixed-dominant groups and were then tested for their ability to perform a spatial task requiring short-term memory and reversible visual imagery. Retarded children with inconsistent and crossed laterality patterns were better in visual-spatial ability than retarded children whose sided preferences were unilateral in eye, hand, ear and foot modalities. The results support the developmental importance of bilateral sensory and motor functioning.
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References
1.
CrawfordJ.Children with subtle perceptual-motor difficulties. Pittsburgh: Stanwix House, 1966.
2.
DelacatoC.The diagnosis of speech and reading problems. Springfield, Ill.: Thomas, 1963.
3.
DusewiczR.KershnerK.A scale for the measurement of lateral dominance. Journal of Educational Measurement, 1969, 6, 187–188.
4.
KershnerJ.Children's spatial representation of directional movement and figure orientations along horizontal and vertical dimensions. Perceptual and Motor Skills, 1970, 31, 641–642.
5.
KershnerJ.Children's acquisition of visuo-spatial dimensionality. Developmental Psychology, 1971, 5, 258–270.
6.
ShipZ.Development of children in schools for the mentally retarded. In ColeM.MaltzmanI. (Eds.), A handbook of contemporary Soviet psychology. New York: Basic Books.1969. Pp. 326–353.
7.
StearnsK.BorkowskiJ.The development of conservation and horizontal-vertical space percepuon in mental retardates. American Journal of Mental Deficiency, 1969, 73, 785–790.
