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    Article

    Genes, Evolution and Intelligence

    I argue that the g factor meets the fundamental criteria of a scientific construct more fully than any other conception of intelligence. I briefly discuss the evidence regarding the relationship of brain size to ...

    Thomas J. Bouchard Jr. in Behavior Genetics (2014)

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    Chapter

    Authoritarianism,Religiousness, and Conservatism : Is “Obedience to Authority” the Explanation for Their Clustering, Universality and Evolution?

    Authoritarianism, and are among the most studied social attitudes in modern . Measures of the three attitudes consistently correlate between 0.50 and 0.70. These strong correlations suggest that they form...

    Thomas J. Bouchard Jr in The Biological Evolution of Religious Mind and Behavior (2009)

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    Article

    Genes, Evolution, and Personality

    There is abundant evidence, some of it reviewed in this paper, that personality traits are substantially influenced by the genes. Much remains to be understood about how and why this is the case. We argue that...

    Thomas J. Bouchard Jr., John C. Loehlin in Behavior Genetics (2001)

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    Article

    The Genetic Correlation Between Impulsivity and Sensation Seeking Traits

    A number of studies have demonstrated associations between sensation seeking traits and measures of impulsivity. This study examined genetic contributions to the observed correlations between imupulsivity and ...

    Yoon-Mi Hur, Thomas J. Bouchard Jr. in Behavior Genetics (1997)

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    Chapter

    Twin Studies of Behavior

    In the age of molecular genetics some commentators have questioned whether twin studies will continue to be a useful tool for studying genetic influences on behavior. Many of us think the answer is yes (Boucha...

    Thomas J. Bouchard Jr in New Aspects of Human Ethology (1997)

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    Article

    Genetic and environmental contributions to the acquisition of a motor skill

    PRACTICE, with feedback, is a fundamental variable that influences the aquisition of motor skills1: with it, everyone improves, but some improve more than others. This simple fact has led to frequent debate over ...

    Paul W. Fox, Scott L. Hershberger, Thomas J. Bouchard Jr in Nature (1996)

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    Chapter

    Longitudinal Studies of Personality and Intelligence

    In 1882 Sir Francis Galton called for the creation of “anthropometric laboratories”:

    The leading ideas of such a laboratory is I have in view, were that its measurement should effectually “samp...

    Thomas J. Bouchard Jr. in International Handbook of Personality and Intelligence (1995)

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    Chapter

    Genetic and Environmental Influences on Adult Personality: Evaluating the Evidence

    This paper is made up of two parts. In the first part we outline a frame of reference (the Big Five) for organizing the data from Behavior Genetic studies of adult personality and then briefly review methods (...

    Thomas J. Bouchard Jr. in Foundations of Personality (1993)

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    Article

    Adjustment of twin data for the effects of age and sex

    For most psychological, physiological, and medical variables there are substantial age and sex effects. In assessing twin similarity for these variables, one can either fail to adjust for the effects of age an...

    Matt McGue, Thomas J. Bouchard Jr. in Behavior Genetics (1984)

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    Chapter

    Twins Reared Together and Apart: What They Tell Us About Human Diversity

    The exceedingly close resemblance attributed to twins has been the subject of many novels and plays, and most persons have felt a desire to know upon what basis of truth those works of fiction may rest. But tw...

    Thomas J. Bouchard Jr. in Individuality and Determinism (1984)