Table I. Dimensions of cluster A, B, and C disorders. DSM-IV, Diagnostic and Statistical Manual of Mental Disorders, 4th Edition.

DSM-IV cluster	Dimensions
Cluster A disorders	Social deficits
	Psychotic-like perceptional distortions
	Cognitive impairment
Cluster B disorders	Impulsivity
	Aggression
	Affective instability
	Emotional information processing
Cluster C disorders	Anxiety/behavioral inhibition
	Compulsivity