Assessing conduct disorder: a new measurement approach

Area of Science:

• Psychology
• Criminology
• Adolescent Psychiatry

Background:

• Conduct disorder (CD) is a significant behavioral issue in adolescents.
• Accurate assessment tools are crucial for understanding CD symptom severity and age of onset.
• The Delinquent Activities Scale (DAS) is a potential instrument for evaluating CD.

Purpose of the Study:

• To evaluate the Delinquent Activities Scale (DAS) for measuring conduct disorder (CD) indicators.
• To examine the relationship between CD symptom severity, age of onset, and psychosocial factors.
• To assess the psychometric properties and clinical utility of the DAS.

Main Methods:

• The Delinquent Activities Scale (DAS) was administered to 190 incarcerated adolescents (ages 14-19).
• Data collected included delinquent behaviors, age of onset, substance use, and peer/parental influences.
• Assessments covered the 12 months pre-incarceration and a 3-month post-release follow-up.

Main Results:

• The DAS demonstrated utility in measuring CD diagnosis, showing concurrent incremental validity.
• CD severity (symptom count) was significantly associated with friend substance use and friend prior arrests (medium to large effect sizes).
• An earlier age of CD onset was linked to earlier initiation of marijuana use.

Conclusions:

• The Delinquent Activities Scale (DAS) is a practical and psychometrically sound instrument for assessing conduct disorder in adolescents.
• Findings highlight the influence of peer factors on CD severity and the link between early onset and substance use.
• The DAS aids in understanding CD indicators, informing diagnosis and intervention strategies.