- Individual functional behavioural analysis The adolescents lists specific important and frequent activities and situations they have problems to master due to pain and target activities are then chosen. Individual capabilities (both physical and psychological), behavioural responses, and their short and long-term consequences are identified. Parental responses and their impact on adolescent's pain behaviours are noted. Target activity related treatment goals as well goals for engagement in the treatment are defined from the individual functional behavioural analysis.