Genetics Contributions to Measures of the Family Environment

Experts believe that behavioral genetics has several problems. "Nature and cultivation: genetic contribution to measurement of home environment" and "adaptation of family subsystem to brothers: use of behavioral genetics to test process genetics" includes behavioral genetics Use of the point of view is included. Experts believe that there are many disadvantages, such as behavioral genetics models involving twins, adoption, and explanation of the analysis, results, discussion by researchers and readers, and the use of family research (Richardson & Norgate, 2006 ); Lerner, 2006).

Almost all scientific studies on genetic and environmental contribution to intelligence, despite concerns about whether IQ testing completely measures intelligence, focus on individuals who measure IQ and examine family relationships I am in tune. For example, if genetics is predominant in IQ, the same twin IQ must be closer than sibling and twin IQ, and brother 's IQ should be higher than the intelligence of the cousin. Alan S. Kaufman quoted these data to support genetic determination of IQ in "Genetics of Childhood Disease, II: Genetics and Intelligence" (May 1999, pediatric youth psychiatry journal) He said. :

Multivariate Genetic Analysis Multivariate genetic analysis evaluates genetic contribution to covariance between features, not dispersion of each feature considered separately. In other words, how much does genetic impact on certain cognitive abilities affect other cognitive abilities? Three examples of multivariate genetic analysis include overlap between specific cognitive abilities, correlation between intelligence tests and school performance tests, and relevance between intelligence and home environment measurements.

One way to directly test the impact of a shared family environment compared to genetics is to observe a child whose association between family and genetics is broken. Adults often take unrelated children to their home. We predict that children adopted will not be different from other children of the family if the differences in how families raise children are more important than genetics from the perspective of diversity. In fact, most adoptive behavioral characteristics, adopted children resemble their own biological relative rather than their families.