A self-report scale was constructed and validated that measures individual differences in objectivism--the tendency to base one's judgments and beliefs upon empirical information and rational considerations. Validity data showed that, compared to people who score low on the Objectivism Scale, highly objective individuals enjoy thinking more, rely more upon observable facts when making decisions, and place less emphasis upon subjective and intuitive styles of decision-making. Among graduate students in psychology, objectivism correlated positively with ratings of research-oriented careers, but negatively with ratings of mental health careers; also, highly objective students were more critical of nonobjective psychological assessment techniques and placed greater importance upon research. Objectivism also predicted preferences for newspaper articles, college course selections, and the criteria respondents use when making decisions. (Author)