TY - JOUR
T1 - Signal and noise in psychotherapy. The role and control of non-specific factors
AU - Omer, H.
AU - London, P.
PY - 1989
Y1 - 1989
N2 - Four major categories of non-specific or common factors are systematically analysed: relationship, expectancy, reorganising, and impact factors. The placebo control method should be discarded in psychotherapy research for two reasons: (a) sham treatment controls are unworkable because common factors in treatment are manifest only when real treatment is administered; and (b) the very events which were once thought of as 'non-specific' noise are now recognised as active therapeutic factors common to many schools.
AB - Four major categories of non-specific or common factors are systematically analysed: relationship, expectancy, reorganising, and impact factors. The placebo control method should be discarded in psychotherapy research for two reasons: (a) sham treatment controls are unworkable because common factors in treatment are manifest only when real treatment is administered; and (b) the very events which were once thought of as 'non-specific' noise are now recognised as active therapeutic factors common to many schools.
UR - http://www.scopus.com/inward/record.url?scp=0024335418&partnerID=8YFLogxK
U2 - 10.1192/bjp.155.2.239
DO - 10.1192/bjp.155.2.239
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AN - SCOPUS:0024335418
SN - 0007-1250
VL - 155
SP - 239
EP - 245
JO - British Journal of Psychiatry
JF - British Journal of Psychiatry
IS - AUG.
ER -