Samples

Question 1

41 murderers who all pleaded not guilty by reason of insanity. 39 men and 2 women

Answer 1

Raine

Question 2

Self-selected, 70 fingerprint practitioners

Answer 2

Hall and Player

Question 3

119 undergraduates, those who grew up in Birmingham were excluded.

Answer 3

Dixon

Question 4

Self-selected, 22 college students

Answer 4

Haney

Question 5

Opportunity, 112 Dutch families from the Netherlands Twin Registry. 48 MZ twins and 64 DZ twins

Answer 5

Van Leeuwen

Question 6

36 babies and infants of other animal species

Answer 6

Gibson and Walk

Question 7

56 middle-class babies aged 49-51 weeks.

Answer 7

Ainsworth and bell

Question 8

30 children. Self-selected, even gender split
10 3 year olds
10 4 year olds
10 5 year olds

Answer 8

Wood

Question 9

19 adults aged between 25-30.
22 adolescents aged between 13-17.
Self-selected

Answer 9

Barkley-Levenson and Galván

Question 10

TV cartoons from the autumn of 1996, 97 and 99 recorded on commercial networks, independent stations and Nickelodeon.

Answer 10

Johnson and Young