Читать книгу The Handy Psychology Answer Book - Lisa J. Cohen - Страница 217

Although the progress in modern genetics is fairly breathtaking, we should not overestimate what gene studies can tell us. What genetic research has shown us very clearly is that the genetic contributions to human psychology are extremely complicated. Multiple genes contribute to any one psychological trait (polygenicity) and most genes serve multiple functions (pleiotropy). Likewise, interactions among various different polymorphisms and different genes impact the expression of genes in complicated and as of yet unknown ways. Finally, genetic studies cannot account for the enormously powerful effect of environment on all aspects of psychology. Therefore while it is exciting when research shows a correlation between polymorphism A in gene B and a particular psychological trait, this likely explains only a small part of the whole picture.