ABSTRACT
Prerequisites of measurement — General considerations in measurement of effects — Treaters and treated — Boundary conditions — Coding — Selection of methods — Critical evaluation of types of information — Input and output — Opinion, testimonial, expert opinion, public opinion, and attitudes — Actions (decisions of clients or treaters) — Time-intercept and similar observational techniques — Derived measures: cost, pay-off — Money as an ethic and a criterion — The ‘as if9argument — Value transfer systems — The ecological model — Input-output models — Limitations of types of criterion
