BIOLOGICAL BASES OF BEHAVIOR
BIOLOGICAL PSYCHOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The studies are not reliable.
|
|
|
The samples are not representative.
|
|
|
It is not possible to really know if a twin is monozygotous or dizygotous
|
|
|
It is difficult to find samples.
|
Detailed explanation-1: -Which of the following is a limitation of twin studies? The samples are not representative. (Twins lead a very different life than the average child growing up. Therefore, they are not highly representative.
Detailed explanation-2: -A further limitation of the twin study design is that the separation of liability into distinct genetic and environmental components may be invalid if sizable gene-environment correlations or interactions exist.
Detailed explanation-3: -Which of the following is true concerning “twin study” research finding? Identical twins have more similar IQ scores than fraternal twins.
Detailed explanation-4: -The twin representativeness assumption states that twins are representative of the general population for a given trait of interest. Thus, this assumption holds that twins do not have different rates of psychopathology compared with non-twin (i.e., singleton) individuals.
Detailed explanation-5: -Twin studies allow researchers to examine the overall role of genes in the development of a trait or disorder. Comparisons between monozygotic (MZ or identical) twins and dizygotic (DZ or fraternal) twins are conducted to evaluate the degree of genetic and environmental influence on a specific trait.