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{{Infobox scientist
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  |name              = Richard J. Herrnstein
  |image            =
  |image_size        =
  |caption          =
  |birth_date        = {{birth date|1930|05|20}}
  |birth_place      = [[New York City]]<ref>[http://www.nytimes.com/1994/09/16/obituaries/richard-herrnstein-64-dies-backed-nature-over-nurture.html?pagewanted=all "Richard Herrnstein, 64, Dies; Backed Nature Over Nurture"]</ref>
  |death_date      =  {{dda|1994|09|13|1930|05|20}}
  |citizenship      = [[United States|American]]
  |field            =
  |alma_mater        = [[Harvard University]]
  |doctoral_advisor  =
  |doctoral_students =
  |known_for        = [[Matching law]], ''[[The Bell Curve]]''
  |prizes            =
}}


'''Richard J. Herrnstein''' (May 20, 1930 – September 13, 1994) was an [[United States|American]] researcher in animal learning in the [[B. F. Skinner|Skinnerian]] tradition. He was one of the founders of [[Society for Quantitative Analysis of Behavior|quantitative analysis of behavior]].
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His major research finding as an experimental psychologist is called "[[matching law]]"—the tendency of animals to allocate their choices in direct proportion to the rewards they provide. To illustrate the phenomenon, imagine that there are two sources of reward, one of which is twice as rich as the other. Herrnstein found in his research that animals often chose at twice the frequency the alternative that was seemingly twice as valuable. This is known as "matching," both in quantitative analysis of behavior and [[mathematical psychology]]". He also developed [[melioration theory]] with William Vaughan, Jr.
 
He was the Edgar Pierce Professor of [[psychology]] at [[Harvard University]] and worked with [[B. F. Skinner]] in the Harvard pigeon lab, where he did research on choice behavior and [[behavioral economics]]. In 1965, and with [[Edwin Boring]], Herrnstein authored ''A Source Book in the History of Psychology''.
 
Herrnstein's research focused first on natural concepts and [[Intelligence|human intelligence]] in the 1970s, and peaked in prolificacy with the publication of his and [[Charles Murray (author)|Charles Murray's]] controversial best-selling book, ''[[The Bell Curve]]''. Herrnstein died of [[peritoneal mesothelioma]] shortly before the book was released.
 
== The matching law ==
 
Perhaps Herrnstein's most notable accomplishment in this field was the formulation of the [[matching law]]. According to the matching law, choices are distributed according to rates of reinforcement for making those choices. An instance of this for two choices can be stated mathematically as
 
:<math>\frac{R_1}{R_1 + R_2} = \frac{r_1}{r_1 + r_2},</math>
 
where ''R''<sub>1</sub> and ''R''<sub>2</sub> are rates of response for two alternative responses, and ''r''<sub>1</sub> and ''r''<sub>2</sub> are rates of reinforcement for the same two responses. Behavior conforming to this law is 'matching,' and explanations of matching and departures from matching constitute a large and important part of the literature on behavioral choice.
 
==Selected bibliography==
*''A Source Book in the History of Psychology'', Edited by Richard J. Herrnstein, Edwin G. Boring, Harvard 1965 ISBN 0-674-82410-5
*''I.Q. in the Meritocracy'', Richard J. Herrnstein, Atlantic Monthly Press 1973
*''Crime and Human Nature: The Definitive Study of the Causes of Crime'', James Q. Wilson, Richard J. Herrnstein, The Free Press 1985 ISBN 0-684-85266-7
*{{Cite book |last1=Herrnstein |first1=Richard J. |last2=Murray |first2=Charles |title=The Bell Curve: Intelligence and Class Structure in American Life |location=New York |publisher=Free Press |isbn=0-02-914673-9 |year=1994  |laysummary=http://reason.com/archives/1995/03/01/cracked-bell |laydate=19 May 2013 |ref=harv }}
*''The Matching Law: Papers in Psychology and Economics by Richard J. Herrnstein'', Edited by Howard Rachlin, David I. Laibson, Harvard  1997 ISBN 0-674-06459-3
 
==References==
{{reflist}}
 
{{Authority control|VIAF=20221593}}
 
{{Persondata        <!-- Metadata: see [[Wikipedia:Persondata]] -->
| NAME              = Herrnstein, Richard
| ALTERNATIVE NAMES =
| SHORT DESCRIPTION = American psychologist
| DATE OF BIRTH    = May 20, 1930
| PLACE OF BIRTH    = [[New York]]
| DATE OF DEATH    = September 13, 1994
| PLACE OF DEATH    =
}}
{{DEFAULTSORT:Herrnstein, Richard}}
[[Category:1930 births]]
[[Category:1994 deaths]]
[[Category:American Jews]]
[[Category:American psychologists]]
[[Category:Behaviorism]]
[[Category:Harvard University alumni]]
[[Category:Harvard University faculty]]
[[Category:Intelligence researchers]]
[[Category:Race and intelligence controversy]]
[[Category:Guggenheim Fellows]]

Revision as of 22:02, 25 February 2014

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