Title

Performance on Digit Span of the WISC and WISC-R: The Effects of Varying the Intertrial Interval

Publication Date

1-1-1975

Type of Culminating Activity

Thesis

Degree Title

Master of Arts in Elementary Education

Department

Special and Early Childhood Education

Major Advisor

Jerry L. Tucker

Advisor

Mark E. Snow

Advisor

Steven Thurber

Abstract

The Wechsler Intelligence Scale for Children (1949), WISC, developed as a logical outgrowth of the Wechsler Adult Intelligence Scale (1939), WAIS, and was standardized on white children. The revised WISC, the WISC-R, was published in 1974. It reflects changing and updating of WISC test questions and procedures to eliminate ambiguous or obsolete items and attempts to strengthen the reliability of the instrument. The WISC-R was standardized on white and non-white children representative of the population of children in the United States (Wechsler, 1974). The validity of the instrument for measuring intelligence has been confirmed and the WISC serves as the standard against which newer measures of intelligence are evaluated (Zimmerman & Woo-Sam, 1972). The WISC is widely used in assessment in the clinical setting as well as being used to evaluate children for placement in Special Education. It has been used with blind, deaf, handicapped, retarded, intellectually superior, delinquent, emotionally disturbed, and learning disabled children (Little, 1960; Zimmerman & Woo-Sam, 1972).

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