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According to the theory of reasoned action of Fishbein & Ajzen (1975), beliefs, attitudes, intentions and behaviour form a causal chain, so that beliefs lead to attitudes, and attitudes in turn lead to intentions and so behaviour. Despite the undoubted influence of the model, a paper by Towriss (1984) has pointed to a discrepancy between what the model says and the way in which it is usually tested: while the model is about individuals' beliefs, subjects are normally asked about modal belief statements supplied by the experimenter. To examine whether the difference is critical, the present experiment was designed to test both approaches, by asking students about drinking milk. Forty subjects were supplied with belief statements (Fishbein & Ajzen condition) and 39 were asked to give their own (Towriss condition). The relationships between beliefs, attitudes, intentions and behaviour were then examined by correlation …