Mastery motivation in adolescents with cerebral palsy.

The aim of this study is to describe motivation in adolescents with cerebral palsy (CP) and factors associated with motivation level. The Dimensions of Mastery Questionnaire (DMQ) measures motivation in mastering challenging tasks and expressive elements. It was completed by 153 parents and 112 adolescents with CP. Adolescents (GMFCS in n=146 - I:50, II:43, III:13, IV:15, V:25) were assessed using the Leiter IQ and Gross Motor Function Measure. Parents completed the Vineland Adaptive Behavior Scale and the Strengths and Difficulties Questionnaire. Motivation scores were highest for mastery pleasure and social persistence with adults and lowest for gross motor and object-oriented persistence. Socio-demographic factors were not strongly correlated with DMQ. Higher gross motor ability (r=0.24-0.52) and fewer activity limitations (r=0.30-0.64, p<.001) were associated with persistence in cognitive, motor and social tasks, but not mastery pleasure. Higher IQ was associated with persistence in object-oriented tasks (r=0.42, p<.001). Prosocial behaviors correlated with high motivation (r=0.39-0.53, p<.001). Adolescents' motivation scores were higher than parents' scores. Adolescents with CP express high mastery pleasure, not related to abilities. High motivation was associated with fewer activity limitations and prosocial behaviors and aspects of family environment. Findings elucidate those at-risk for low motivation, which can influence treatment adherence and participation in challenging but meaningful activities.