The author replies to the criticism presented by Dr. Tillman, et alii concerning the author's study “Ability Structure and Loss of Vision.” The points of the criticism are commented on briefly. A reanalysis of former data is presented supporting the author's views.
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References
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JuurmaaJ.An analysis of the components of orientation ability and mental manipulation of spatial relationships. Reports from the Institute of Occupational Health, Helsinki, Finland, 1965, No. 28.
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JuurmaaJ.Ability structure and loss of vision. New York: American Foundation for the Blind, 1967. (Res. Ser. No. 18)
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TillmanM. H.BashawW. L., & BradleyM.A reanalysis and critique of “sensory discrimination” as an ability component of the blind. Perceptual and Motor Skills, 1969, 29, 283–288.
