Hirshoren A, Schnittjer C J
J Abnorm Child Psychol. 1979 Jun;7(2):221-8. doi: 10.1007/BF00918902.
The Behavior Problem Checklist was completed by the teachers of 192 deaf students who attended a special day school for the deaf. Three separate factor analyses were performed. Four factors that correspond to the dimensions found in earlier research and previously labeled conduct disorder, personality problems, immaturity-inadequacy, and socialized delinquency were found. An additional factor labeled passive inferiority was also extracted.