twin studies

Question 1

monozygotic twins

Answer 1

100% genetically identical

Question 2

dizotic twins

Answer 2

are not 100% genetically identical

Question 3

concordance rate

Answer 3

how is similar twins are

Question 4

how might the use of MZ and DZ towns he used to investigate whether nature is the cause of behavior

Answer 4

compare MZ/DZ behavior /responses when carrying out a particular task
if MZ twins differ in behavior

Question 5

strengths of twin studies

Answer 5

• most twins are raised in the same household and environment so when comparing MZ and DZ twins the only difference should be genetics

-eliminates some extraneous variables which could cause behavioral differences increasing validity of research h

Question 6

strength 2 twin studies

Answer 6

twins studies are the only practical way to compare genetically identical people

can explain whether people learn by nature / nurture - there’s no other way to research this impact

Question 7

twin studies weaknesses

Answer 7

twins are rare and only account for 1.5% of births
MZ twins accounts for only 0.5%

making generalizability difficult

Question 8

twin studies weaknesses 2

Answer 8

• if mz twins behave similarly and in the same environment it can be hard to judge whether behavior is due to their genetics or environment
• makes it hard to draw conclusions about whether behavior is due to nature or nurture

Question 9

why are adopted children of interest to psychologists looking to exploit the nurture side of the debate

Answer 9

we can see if behavior has been influenced by their environment as they have been raised away from their biological parents

Question 10

why is it better if researchers have access to both adopted and biological parents when doing an adoption study

Answer 10

because you can compare their behavior between their biological parents to see if behavior is more influenced by nature ol
compare behavior between adopted parents and see if behavior is more nurture

Question 11

strength 1 adoption studies

Answer 11

using adopted children is practical and ethical

helps separate whether behavior is nurture or nature

how children and their birth parents compare when living in different environments

Question 12

adoption studies strength 2

Answer 12

study how environment can affect behavior in real world settings rather than lab studies

has ecological validity so can be generalized

Question 13

weakness 1 adoption studies

Answer 13

• adoption agencies pair children with parents who are similar to birth parents

harder to separate whether behavior is nature or nurture

Question 14

weakness 2 adoption studies

Answer 14

parents who adopt children tend to better educated more income and lower rates of mental illness compared to the rest of the population

doesn’t generalize to other people

Question 15

weakness 3 adoption studies

Answer 15

can be difficult to find a large sample size of adopted children

lower reliability due to smaller sample

Question 16

weakness 4 adoption studies

Answer 16

people who are adopted may have more traumas

not generalizable