The PKMS questionnaire (Stattin and Kerr 2000) consists of two parts: (1) parental knowledge (8 items), providing an overall
measurement of parental knowledge (what parents know
about their child, the child's activities and whereabouts), and (2) three subscales measuring different ways of gathering information, including monitoring strategies; parental solicitation (i.e. a way of actively obtaining information / asking questions
about the child's whereabouts)(5 items), parental control (
rules and restrictions on the child's activities)(4 items), and child disclosure (the child's spontaneously shared information)(5 items).