Mental Retardation and the Neglected Construct of Motivation

Balla D. , & Zigler E. (1979). Personality develop-ment in retarded persons. In Ellis N.R. (Ed.), Handbook of mental deficiency (2nd ed., pp. 143–168). Hillsdale, NJ: Erlbaum.

Clarke A. M. , & Clarke A. D. B. , (1985). Criteria and classification. In Clarke A. M. , Clarke A. D. B. , & Berg J. M. (Eds.), Mental deficiency: The changing outlook (4th ed., pp. 27–52). New York: Free Press.

Grossman H. J. (Ed.) (1983). Classification in mental retardation. Washington, DC: American Associa-tion on Mental Deficiency.

Haywood H. C. , & Switzky H. N. (1986). Intrinsic motivation and behavioral effectiveness in re-tarded persons. In Ellis N. & Bray N. (Eds.), Inter-national review of research in mental retardation (Vol. 14, pp. 1–46). New York: Academic Press.

Haywood H. C. , & Switzky H. N. (1992). What, how and how much? In Carlson J. S. (Ed.), Advances in cognition and educational practice: Theoretical issues: Intelligence, cognition and assessment (Vol. 1-Part A, pp. 1–46). Greenwich, CT: JAI Press.

Hodapp R. M. , Burack J. A. , & Zigler E. (Eds.). (1990). Issues in the developmental approach to mental retardation. New York: Cambridge University Press.

Schultz G. F. , & Switzky H. N. (1990). The develop-ment of intrinsic motivation in students with learning problems. Preventing School Failure, 34, 14–20.

Switzky H. N. (in press-a). Individual differences in personality and motivational systems in persons with mental retardation. In MacLean W. E. Jr. (Ed.), Handbook of mental deficiency, psychological the-ory and research (3rd ed.). Mahwah, NJ: Erlbaum.

Switzky H. N. (in press-b). Personality and motiva-tional differences in persons with mental retardation. Mahwah, NJ: Erlbaum.

Switzky H. N. , & Haywoood H. C. (1974). Motiva-tional orientation and the relative efficacy of self-monitored and externally imposed reinforcement schedules. Journal of Personality and Social Psychol-ogy, 30, 360–366.

Switzky H. N. , & Haywood H. C. (1984). Bio-social ecological perspectives on mental retardation. In Endler N. S. & Hunt J. McV. (Eds.), Personality and the behavior disorders (2nd ed., Vol. 2, pp. 851–896). New York: Wiley.

Switzky H. N. , & Haywood H. C. (1991). Self-rein-forcement schedules in persons with mild mental retardation: Effects of motivational orientation and instructional demands, Journal of Mental Defi-ciency Research, 35, 221–230.

Switzky H. N. , & Heal L. (1990). Research methods in special education. In Gaylord-Ross R. (Ed.), Issues and research in special education (Vol. 1, pp. 1–81). New York: Teachers College Press.

Switzky H. N. , & Schultz G. F. (1988). Intrinsic mo-tivation and learning performance implications for individual educational programming for the mildly handicapped. Remedial and Special Educa-tion, 9, 7–14.

White R. H. (1959). Motivation reconsidered: The concept of competence. Psychological Review, 66, 297–333.

Zigler E. , & Balla D. (1982). Mental retardation: The developmental-difference controversy. Hillsdale, NJ: Erlbaum.

Zigler E. , & Hodapp R. M. (1991). Behavioral func-tioning in individuals with mental retardation. An-nual Review of Psychology, 42, 29–50.