Regular ArticleTwin Studies in Behavioral Research: A Skeptical View
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Cited by (50)
Ova and out: Using twins to estimate the educational returns to attending a selective college
2013, Economics of Education ReviewCitation Excerpt :The second critique is if these twins are so similar, why do they make such different enrollment decisions? Research across several disciplines discusses the genetic and environmental differences among twins (e.g. Jencks, 1980; Kamin and Goldberger, 2001; Manski, 2011). Econometrically, this amounts to the exogeneity of the within-twin variation or more specifically, the existence of unobservable student-level characteristics that influence college choice, and independently, the probability of four-year graduation rates.
The heritability of moral standards for everyday dishonesty
2013, Journal of Economic Behavior and OrganizationCitation Excerpt :This method has enjoyed wide, fruitful use in the study of various behavioral and psychological traits (e.g., Bouchard et al., 1990; Plomin, 1990). Since the ACE model requires strong functional form and independence assumptions, it has been the object of criticism (Kamin and Goldberger, 2002). A linear functional form implies that there are no gene–environment or gene–gene interactions.
Genetic and environmental influences underlying the relationship between low self-control and substance use
2013, Journal of Criminal JusticeThe lost study: A 1998 adoption study of personality that found no genetic relationship between birthparents and their 240 adopted-away biological offspring
2013, Advances in Child Development and BehaviorCitation Excerpt :TRA studies are problematic on several grounds, however, including (1) the questionable “separation” of MZ twin pairs, who in many cases were reared together for several years and had quite a bit of contact over much of their lives. According to Susan Farber, in her exhaustive review of the TRA literature, these studies assess “MZ twins partially reared apart” (Farber, 1981, p. 273, emphasis added); (2) the similarity bias of the samples; (3) researchers’ failure to publish or share raw data and life history information for the twins under study; and (4) the impact that the researchers’ bias in favor of genetic explanations may have had on their results and conclusions (for evidence supporting points (1)–(4), see Farber, 1981; Joseph, 2004, 2010a; Kamin, 1974; Kamin & Goldberger, 2002; Lewontin Rose, & Kamin, 1984). The biggest problem with TRA studies, however, is that we would expect any two infants of the same sex (whether 100% genetically identical MZ twin pairs or genetically unrelated pairs), who are placed into different families around the same time, to subsequently share many adult characteristics and traits simply because they are the same sex and grow up in the same era (Joseph, 2004; McGue & Bouchard, 1984; Rose, 1982).
The role of genetics in the etiology of schizophrenia
2010, Psychiatric Clinics of North AmericaCitation Excerpt :Missing heritability here refers to heritability that is unexplained after well-powered GWAS have been conducted. Although it has been argued that the heritability of some behavioral traits and disorders may have been overestimated,136 this seems unlikely for schizophrenia given the large body of high-quality evidence that is available, and other reasons seem more plausible.137 CNVs are stretches of genomic deletions and duplications ranging from 1 kb to several Mb, and are likely to have larger phenotypic effects than SNPs.
Some uses of models of quantitative genetic selection in social science
2017, Journal of Biosocial Science
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