M. Birchwood et al., A SELF-REPORT INSIGHT SCALE FOR PSYCHOSIS - RELIABILITY, VALIDITY ANDSENSITIVITY TO CHANGE, Acta psychiatrica Scandinavica, 89(1), 1994, pp. 62-67
Lack of insight is a frequent concomitant of psychosis and has traditi
onally been viewed as a binary, all or none phenomenon. Recent concept
ualization has formulated insight as a continuum representing the juxt
aposition of 3 factors - awareness of illness, need for treatment and
attribution of symptoms. Measurement of insight has been exclusively b
ased on interview; this method does not easily lend itself to frequent
repeated measurement and requires interrater reliability to be establ
ished. A self-report Insight Scale is presented, and evidence in suppo
rt of its reliability, validity and sensitivity is provided that inclu
des a sample of 30 patients monitored during recovery from an acute ps
ychosis. The scale is a quick and acceptable measure that may find app
lication in investigations of acute care, cognitive therapy of psychot
ic symptoms and as a method of augmenting clinical judgements of insig
ht.