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Recent Issues in the Developmental Approach to Mental Retardation

  • Edward Zigler
  • David Balla
Part of the NATO Conference Series book series (NATOCS, volume 14)

Abstract

A two-group approach to the range of intellect was explained to account for irregularities in the “normal” IQ curve. Organically retarded persons would be represented by one curve at the lowest end of the distribution. Familial retarded persons would be grouped with the rest of the population—their lower IQs considered a part of the normal variation dictated by the diversity of human genetic inheritance. The extreme environmental approach to mental retardation was summarized, as were the difference and general-developmental positions. Behavioral differences between mildly retarded and nonretarded persons of the same MA were explained in terms of environmentally-based motivational differences, including such factors as social deprivation, expectancy of success, optimal reinforcers, outerdirectedness, and institutionalization.

Keywords

Social Reinforcement Mental Retardation Developmental Approach Social Deprivation Mental Deficiency 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1981

Authors and Affiliations

  • Edward Zigler
    • 1
  • David Balla
    • 1
  1. 1.Yale UniversityNew HavenUSA

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