The variation in the extent to which adolescents engage in career exploratory behavior is large. This study examined the utility of the Theory of Planned Behavior, augmented by the addition of a past behavior variable, in predicting information-seeking behavior in a school pupil sample. A sample of 278 adolescents completed a questionnaire administered six weeks into the first term and again six weeks later. A structural equation modeling analysis, using LISREL 8.3, suggested that the enhanced TPB adequately accounted for the data (RMSEA = 0.047). The results indicated that behavioral intentions to search for career information were influenced primarily by past behavior and to a lesser extent by attitudes towards career exploratory behavior. Future behavior was explained best by past behavior. Social norms and perceived behavioral control exerted no significant influence on behavioral intentions or self-reported career exploratory behavior. (C) 2002 Elsevier Science (USA). All rights reserved.