Contemp Study- Brengden Et Al Flashcards
What was the aim? BRENGDEN ET AL
To see if social aggression is caused by genes or the environment
Where were participants recruited from? BRENGDEN ET AL
The Quebec newborn twin study
What did the final sample consist of? BRENGDEN ET AL
234 twin pairs born between 1995 and 1998
What intervals was data collected? BRENGDEN ET AL
Longitudinally at intervals between 5 and 60 months and then at 6 years
What did the data consist of? BRENGDEN ET AL
Two ratings of each twins behaviour
What did teachers complete? BRENGDEN ET AL
A behaviour questionnaire for twins in their class, rating social and physical aggression on a scale
How were peer ratings gained? BRENGDEN ET AL
Gained by giving each child a booklet of photos of every child in the class, asked to circle 3 photos of children that matched 4 behaviour descriptions
High validity? BRENGDEN ET AL
Measures of the Twins’ aggressive behaviour was taken from two different sources
Low in generalisability? BRENGDEN ET AL
Sample size of 234 was relatively small when looking at group comparisons
