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Abstract

The effects of physical size and complexity of metric figures on tactual discrimination performance was investigated with 36 blind children in grades 1 and 2. Metric figures from three levels of complexity (3 × 3, 4 × 4, and 5 × 5) were combined factorially with three physical sizes (1, 2, and 4 inches) in a same-different pair-comparison discrimination task. Increasing levels of physical size and complexity had no effect on discrimination accuracy, but increasing levels of either physical size or complexity significantly increased task time. Overall accuracy of performance was low (62 percent correct discriminations), and it appeared that unsystematic and inappropriate hand and finger motions were responsible for the low level of performance.

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References

Alluisi

E.A.

On the use of information measures in studies of form perception. Perceptual and Motor Skills, 1960, 11, 195–203.

Baker

E.J.

, & Alluisi

E.A.

Information handling aspects of visual and auditory form perception. Journal of Engineering Psychology, 1962, 1, 159–179.

Fitts

P.M.

, Weinstein

, Rappaport

, Anderson

, & Leonard

J.A.

Stimulus correlates of visual pattern recognition. Journal of Experimental Psychology, 1956, 51, 1–11.

Foulke

, & Warm

Effects of complexity and redundancy on the tactual recognition of metric figures. Perceptual and Motor Skills, 1967, 25, 177–187.

Kirk

R.E.

Experimental design: Procedures for the behavioral sciences. Belmont, Cal.: Brooks/Cole, 1969.

Lashley

K.S.

The problem of serial behavior. In Jeffress

L.A.

(Ed.), Cerebral mechanisms in behavior. New York: Wiley, 1951. Pp. 112–136.

Lobb

, & Friend

Tactile form discrimination with varying size and duration of exposure. Psychonomic Science, 1967, 7, 415–416.

Morris

J.E.

, & Nolan

C.Y.

Minimum sizes for areal type tactual symbols. International Journal for the Education of the Blind, 1963, 13, 48–51.

Owen

D.H.

, & Brown

D.R.

Visual and tactual form discrimination: Psychophysical comparison within and between modalities. Perception and Psychophysics, 1970, 7, 302–306.

10.

Piaget

, & Inhelder

The child's conception of space. London: Routledge & Kegan Paul, 1967.

11.

Revesz

The psychology and art of the blind. (2nd ed.) London: Longmans Green, 1950.

12.

Warm

J.S.

, Clark

J.L.

, & Foulke

Effects of differential spatial orientation on tactual pattern recognition. Perceptual & Motor Skills, 1970, 31, 87–94.

13.

Zigler

M.J.

, & Northrup

K.M.

The tactual perception of form. American Journal of Psychology, 1926, 37, 391–397.

Effects of Physical Size and Complexity on Tactual Discrimination of Blind Children

Abstract

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References