Family studies can indicate whether a trait runs in families, but they cannot provide conclusive evidence that a trait is influenced by heredity because

a. there are too many dependent variables in family studies.
b. random assignment is impossible in family studies.
c. there are no independent variables in family studies.
d. family members share not only genes but also similar environments.

D

Psychology

You might also like to view...

An important part of Canada's national mental health strategy is to

a) Fund all mental health services for all Canadians b) Provide medication whenever possible to treat mental health problems c) Tailor services to the specific needs of Canada's First Nations d) Ensure that each province spends the same amount of money on mental health services

Psychology

Ginger examines a painting of a stone path extending into the horizon of a field. Two sticks lie horizontally across the path: one in the beginning of the path and the other near the horizon. Each stick measures 10 cm in length, but the stick near the horizon appears much larger than the stick at the beginning of the path. Which illusion explains this phenomenon??

a. ?Roger Shepard parallelogram illusion b. ?Munker illusion c. ?Müller-Lyer illusion d. ?Ponzo illusion

Psychology