In addition, the general behavioral control scale of Kerr
and Stattin (2000) was adapted to measure behavioral
control aimed at affecting adolescents’ alcohol consumption.
Examples of the 5 items were ‘Do you need your
mother’s permission to drink alcohol on weekdays?’ and
‘Does your mother want to know whether your friends
drink alcohol?’. As in the original scale, the response categories
ranged from 1 ‘never’ to 5 ‘always’. Cronbach’s
alpha coefficients were between .74 and .88 across the
three waves.