Jay Joseph, Psy.D.
Licensed Psychologist/Author
Offices in Oakland (Rockridge District) and Hayward California
jayjoseph22@gmail.com Telephone: (510) 295-5490


    THE GENE ILLUSION
    Genetic Research in Psychiatry and
    Psychology Under the Microscope

    By Jay Joseph, Psy.D.

    Algora Publishing, 2004.
    Retail price $26.95 paperback,
    $29.95 hardcover. 407 pp.








    Click here for a chapter-by-chapter description of The Gene Illusion

           What are the forces shaping who we are, how we live, and how we act? Are we shaped
    primarily by our environment, or by our genes? These very old questions form the basis of the "nature-
    nurture” debate. Increasingly, we are told that research has confirmed the importance of genetic
    factors influencing psychiatric disorders, personality, intelligence, criminality, and so forth.
              Jay Joseph’s timely, challenging book provides a much needed critical appraisal of the
    evidence cited in support of genetic theories in psychiatry and psychology. His book shows that, far
    from establishing the importance of genes, family, twin and adoption research has been plagued by
    researcher bias, unsound methodology, and a reliance on unsupported theoretical assumptions.
    Historically speaking, he shows how this greatly flawed body of research has been used in support of
    eugenics and conservative social agendas. This is particularly evident in Chapter Two, which
    contains the only in-depth critical review of the history of twin research ever published.
           Much of the purported scientific evidence put forward in support of genetic theories has been
    produced by the fields of behavior genetics and psychiatric genetics. It has been delivered to the
    public in numerous magazine and newspaper articles, as well as by the authors of several popular
    books. In particular, studies of twins (both reared-together and reared-apart) have been put forward
    as providing conclusive evidence in support of genetic influences on psychological traits such as
    intelligence and personality. The reared-apart twin studies performed by researchers at the
    University of Minnesota have been the subject of much attention, including stories of individual pairs
    of supposedly reared-apart identical twins who, it was claimed, displayed remarkable similarities
    upon being reunited. Joseph shows, however, that both systematic reared-apart twin studies and
    stories about individual pairs provide little (if any) evidence in support of genetic influences on human
    behavioral differences.
          Schizophrenia is the most studied, and at the same time the most feared and misunderstood, of
    all psychiatric disorders. Two chapters are devoted to problems with genetic research in this area.
    One of these chapters reviews schizophrenia adoption research, which includes the frequently cited
    Danish-American and Finnish investigations. Another chapter looks into the alleged genetic basis of
    criminal behavior, an idea more popular today than at any time in the past 50 years. Additional
    chapters look into the genetics of IQ, the heritability concept, and molecular genetic research.  
           The bleak view of humans and their future put forward by the proponents of genetic determinism
    is based largely on the faulty research Joseph highlights in this book. He concludes that there is little
    evidence that disordered genes are the cause of human suffering and socially disapproved
    behavior. Rather, the likely causes are well-documented psychologically harmful events and
    environments.
           The Gene Illusion is a groundbreaking work, and is essential reading for anyone seeking an
    alternative to the increasingly popular, yet mistaken view that "genes are destiny."

           
           Joseph published his second book, The Missing Gene: Psychiatry, Heredity, and the Fruitless
    Search for Genes, in 2006.



                                      





                                                                            

                                                                                      Table of Contents

    CHAPTER 1         
    Introduction

    CHAPTER 2       
    Twin Research: Misunderstanding Twins, from Galton to the 21st Century

    CHAPTER 3         
    The Twin Method: An Environmentally Confounded Research Method

    CHAPTER 4       
    A Critique of Studies of Twins Reared Apart

    CHAPTER 5         
    The Heritability Concept: A Measure of Inheritance or Inherently Misleading?  

    CHAPTER 6       
    The Genetics of Schizophrenia I: Overview

    CHAPTER 7        
    The Genetics of Schizophrenia II: Adoption Studies

    CHAPTER 8       
    Is Criminal Behavior in the Genes? A Critical Review of Twin and Adoption
    Studies of Criminal and Antisocial Behavior

    CHAPTER 9          
    Genetics and IQ

    CHAPTER 10        
    Molecular Genetic Studies in Psychiatry and Psychology: An Exercise in
    Futility?      

    CHAPTER 11        
    Where Do We Go From Here?

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     2008: Researchers Confirm Failure to Find Genes for Schizophrenia