Psychology Dictionary of Arguments

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Reaction range: the reaction range in psychology refers to the concept that genetic potential limits an individual's range of possible developmental outcomes, but environmental factors determine where within this range the individual will fall. It is often used in the context of intelligence. See also Intelligence, Psychological development, Performance, Developmental psychology, Environment, Heritability.
Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments.

Author Concept Summary/Quotes Sources

Arthur R. Jensen on Reaction Range - Dictionary of Arguments

Slater I 124
Reaction range/genetic theories/psychology/Jensen: the genetic concept of “reaction range,” [indicates] the observation that the same genotype can give rise to rather different observable traits in different environments.
Jensen (1969(1) discussed this problem on pages 63-64. Another problem is, that different genotypes may show different reaction ranges: some may be more buffered than others from environmental circumstances.
[Jensen] noted that this implies that heritability estimates may vary for subgroups within population groups, specifically pointing out that no estimates of the heritability of intelligence were available to African-American groups, and that samples that included European-Americans of the same lower SES (socioeconomic status) level as many African-Americans were not sufficiently relevant, as the SES measure might not reflect racial differences in the environmental conditions that actually impact development of intelligence and/or academic performance.
>Intelligence tests/Jensen
, >Heritability/Jensen.

1. Jensen, A. R. (1969). How much can we boost IQ and scholastic achievement? Harvard Educational Review, 3, 1–123.

Wendy Johnson: „How Much Can We Boost IQ? Updated Look at Jensen’s (1969) Question and Answer“, in: Alan M. Slater & Paul C. Quinn (eds.) 2012. Developmental Psychology. Revisiting the Classic Studies. London: Sage Publications

Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution. Translations: Dictionary of Arguments
The note [Concept/Author], [Author1]Vs[Author2] or [Author]Vs[term] resp. "problem:"/"solution:", "old:"/"new:" and "thesis:" is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition.
Jensen, Arthur R.
Slater I
Alan M. Slater
Paul C. Quinn
Developmental Psychology. Revisiting the Classic Studies London 2012

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