Twin Studies

Question	Answer
Identical twins are referred to as what?	Monozygotic (MZ)
Non identical twins are referred to as what?	Dizygotic (DZ)
What % of genes are shared by MZ twins?	100%
What % of genes are shared by DZ twins?	50%
Define a twin study	Using correlation research to establish a genetic argument for the origin of human behaviour.
Would 2 MZ or 2 DZ twins who've been reared together be more similar according to the bioloigcal approach. Why?	2 MZ because they share 100% of their genes.
If a characteristic were entirely a product of our genes what would we expect from MZ twins?	That both would always share this characteristic. This is NOT the case.
Give a strength of twin studies (applicability)	There's lots of data in support of biological roots of disorders which as helped psychologists prevent stress for those vulnerable.
Give a weakness of twin studies (2 measurable)	It's hard to isolate whether it's nature or nurture. 1. twins might have experienced a similar environment during separation. 2. Rarely separated at birth so often spent some time together.
Give a weakness of twin studies (MZ vs DZ)	Adults tend to treat MZs more similarly as they look more alike. This may lead to their similarity rather than genes.
Define a twin study in simple terms	Comparing specific characteristics of identical/non-identical twins.

Resource summary

	Created by alicefindlay97 over 9 years ago