Effect of dietary phenylalanine restriction on visual attention span in mentally retarded subjects with phenylketonuria.

Abstract

An ABA within-subject study design was used to assess the effect of dietary phenylalanine restriction on the visual attention span of three mentally retarded males (9, 15, and 21 years old) with phenylketonuria. Visual attention span was measured by recording the amount of time the subjects visually fixated pictures projected on a screen according to a… (More)

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@article{Giffin1980EffectOD, title={Effect of dietary phenylalanine restriction on visual attention span in mentally retarded subjects with phenylketonuria.}, author={F D Giffin and Joe T. R. Clarke and D D'entremont}, journal={The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques}, year={1980}, volume={7 2}, pages={127-31} }