In which of the following relationships are two persons related so that one of the parties loses or never attains independence?

There is little evidence of long-term benefits of drug therapy for insomnia after the use

of the drugs ceases. Indicate whether the statement is true or false

Most efforts to study the effects of genetics on personality use ____

a. ?factor analysis b. ?qualitative methods c. ?the twin study method d. ?the study of siblings