INTENTION BEHAVIOR CONSISTENCY - EFFECTS OF CONSIDERATION SET SIZE, INVOLVEMENT AND NEED FOR COGNITION

This study focuses on the strength of the relationship between behavio ural intentions and actual behaviour in a multi-alternative choice con text. Two separate moderating processes of intention-behaviour consist ency were hypothesized, i.e. the amount of reasoning during intention formation, and the degree of confidence in the intention. Involvement (as an issue-specific factor), and need for cognition (as an individua l difference factor) were investigated as antecedents of amount of rea soning. Confidence in the intention was predicted from the size of the consideration set (i.e. the number of alternatives that one considers for choice), and involvement. The study comprised a longitudinal two- wave survey conducted before and after national elections in The Nethe rlands, in which pre-election voting intentions were compared with act ual voting behaviour. A high degree of intention-behaviour consistency was found, which was significantly related to both amount of reasonin g and confidence. The expected relations were found. The results exten d current process models of attitude-behaviour relations. Furthermore, the results indicate that processes related to the consideration set size and content account for variance in intention-behaviour consisten cy in choice contexts that cannot be accounted for by traditional atti tude-behaviour perspectives.