The effectiveness of police custody assessments in identifying suspects with intellectual disabilities and attention deficit hyperactivity disorder

Table 2 Correlations between total scores on the diagnostic screens

	Mean (SD) (N)	Barkley ADHD adult total	Barkley current impairment score	LDSQ percentage score	Oregon CD total
Barkley ADHD child total	21.9 (14.0) (196)	0.72**	.55**	-.35**	.77**
Barkley ADHD adult total	17.3 (12.2) (196)	-	.79**	-.34**	.65**
Barkley current impairment score	8.2 (7.4) (195)	-	-	-.23*	.51**
LDSQ percentage score	78.5 (18.9) (195)	-	-	-	-.30**
Oregon CD total	13.3 (4.9) (194)

*P < .01.
**P < .001.
ADHD, Attention Deficit Hyperactivity Disorder; CD, Conduct disorder; LDSQ, Learning Disability Screening Questionnaire.