Rl. Osullivan et al., THE MASSACHUSETTS-GENERAL-HOSPITAL (MGH) HAIRPULLING SCALE .2. RELIABILITY AND VALIDITY, Psychotherapy and psychosomatics, 64(3-4), 1995, pp. 146-148
Assessment of symptom severity and change in chronic hairpulling has b
een limited by the absence of a psychometrically validated clinical ra
ting scale. The Massachusetts General Hospital Hairpulling Scale demon
strated test-retest reliability, convergent and divergent validity, an
d sensitivity to change in hairpulling symptoms.