RT Article T1 Limits of Operationalization: A Critique of Spitzer and Endicolt's (1978) Proposed Operational Criteria for Mental Disorder JF Journal of abnormal psychology VO 102 IS 1 SP 160 OP 172 A1 Wakefield, Jerome C. LA English YR 1993 UL https://krimdok.uni-tuebingen.de/Record/164023697X K1 Geisteskrankheit K1 Operationalisierung