This study was designed to replicate and extend two sets of earlier findings reported by Bodden and his colleagues. With regard to the first of these, our results, in contrast to Bodden's, failed to reveal any relation between aspects of vocational structure and the selection of an appropriate academic major. Second, the replicability of Bodden and James's (1976) finding that providing occupational information decreases vocational differentiation was investigated. Results of our study again confirmed this decrease in differentiation, but only when subjects used experimentally provided constructs, not when they used their own, personally elicited constructs. The implications of these findings for vocational counseling are discussed, and future directions for research are noted.The ways in which people perceive the world play an important part in the decisions they make and the behaviors they engage in. According to Kelly (1955), people use their perceptions to construct representations of the real world and to predict and control everyday events. These representations of reality take the form of dichotomous "constructs" (e.g., good vs. bad) organized into structured schemata that enable people to interpret events and "chart a course of behavior" (Kelly 1955, p. 9). Of particular interest in this study is a subset of personal constructs that Kelly (1955, p. 740) referred to as the "vocational construct system," described by Neimeyer (1988) as "an interrelated matrix of bipolar dimensions whose focus of convenience is occupational or vocational experience (e.g., high vs. low salary)" (p. 441).Beginning with the early work of Bodden (1970), a considerable body of research has involved the use of Kelly's (1955) repertory grid technique to investigate the relation between the complexity of the vocational construct system and vocational behavior (see Neimeyer, 1988, for a review). Our study focused on two programs of research from this literature initiated by Bodden (1970) and Bodden and James (1976). In the first of these, Bodden (1970) argued that vocational complexity (defined in terms of vocational differentiation, or the number of independent constructs available to a person in perceiving careers; Tripodi & Bieri ,1969), should be positively correlated with the selection of an appropriate vocational choice. As Bodden (1970) reasoned, if "cognitively complex persons are able to make finer discriminations among stimulus information input ... then [they] should be more likely to make appropriate vocational decisions" (p. 364).Using a sample of 200 college undergraduates, Bodden (1970) compared the appropriateness of subjects' intended vocational choices with their levels of cognitive differentiation. Bodden determined vocational appropriateness by