Most previous research on the economics of information has been based
on the expected utility hypothesis and Bayesian learning. Yet there is
experimental evidence that decision makers do not always maximize exp
ected utility and that human learning is not always consistent with Ba
yes' rule. Using a two-period model, this paper examines the valuation
of information as well as the demand for information in the broader c
ontext of a state preference approach under an ordinal representation
of preferences. In particular, it is not assumed that the decision mak
er is Bayesian, nor that he behaves in a way consistent with the expec
ted utility hypothesis. In this general framework, the value of inform
ation is defined and analysed. Also, under active learning, the optima
l allocation of information gathering activities is discussed. Behavio
ural properties of the demand for information are derived making use o
f a compensation function. Implications of the results for measuring t
he value of information and for the economic analysis of learning acti
vities are discussed.