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Flashcards in Twin and Adoption Studies Deck (7):
1

What are adoption studies?

They are carried out because the environment of adopted children is not the same as their biological families yet they have the same genes in common

2

What does an adoption study show?

Similarities with their biological families will indicate a behaviour is down to nature, differences indicate nurture

3

Strengths of adoption studies?

- A way of seperatng genes from the environment, similarities indicate nature
- Developmental trends can be studied as studies can be longitudinal

4

Weaknesses of adoption studies?

- Likely that there is a certain type of family who are accepted as adoptees of children
- Children tend to be placed in families like their own so their birth environment and adopted may be similar

5

What is a twin study?

Where monozygotic twins and dizygotic twins are compared for concordance of certain characteristics. Looking for 100% concordance in MZ twins as they share genes.

6

Strength of twin studies?

- More twins in society, can have large sample sizes and replicate studies
- Can tell us whether you can inherit behaviours
- Twins are a naturally occurring variable

7

Weakness of twin studies?

- Lack generalisability
- Confounding variables like different social groups etc