Evaluation of twin studies

Question 1

1 strength regarding Nurture being kept constant?

Answer 1

as nurture is being kept constant any differences in Behavior could be assumed to be due to nature for instance the schizophrenia argument

Question 2

1 Strength regarding ecological validity?

Answer 2

Nothing in the environment is being directly manipulated so is kept true to life so is not artificial.

Question 3

1 strength regarding data collection?

Answer 3

Twin studies usually collects both qualitative and quantitative data providing good validity

Question 4

1 Weakness regarding sampling?

Answer 4

Sampling bias because twins used in research often answer advertisements (Volunteer sample) and so may only represent a certain type of twins and so can not be generalized to all twins?

Question 5

1 Weakness regarding treatment of the twins?

Answer 5

Because MZ twins look alike they are often treated more alike than DZ twins who don’t making it hard to draw conclusions of nature/nurture