31. Second, recent studies suggest that much of one's EF skills are inherited genetically, as demonstrated in twin studies . 32. Sosis ( 2014 ) has argued the " hedonic treadmill " interpretation of twin studies depends on dubious assumptions. 33. Twin studies find that if one has the disease there is a 55 % chance the other will too.34. He has also argued that the heritability estimate from a twin study may reflect factors other than shared genes. 35. The self-transcendence measure was shown to be heritable by classical twin studies conducted by Lindon Eaves and Nicholas Martin. 36. A large part of the evidence collected linking genetics and the environment to personality have come from twin studies . 37. As indicated in various twin studies a percentage of the population may also have these antibodies without developing Hashimoto's thyroiditis. 38. As a result, twin studies were performed to show that the symptoms of OCD are heritable and thus genetically related. 39. Early case and twin studies have indicated that genetic component are important in host susceptibility to " Mycobacterial tuberculosis ". 40. Family-linkage and twin studies have indicated that genetic factors often play an important role in the development of mental disorders.
