ABSTRACT
Much of this initial phase of psychological research was concerned with issues of measuring utility and subjective probability. Later research explored empirical findings that one and the same decision problem could produce different decisions either because of variation in the ways in which it was presented or because different response measures were used, even though these were supposed to be equivalent indices of preferences (see Selart, Chapter 4). These findings were difficult to explain in terms of a behavioural model of rational behaviour.
