It is no exaggeration to say that subsequent evidence in support of Weber' thesis has been historical and “institutional.” Conversely, almost all research claiming to negate the thesis has involved social-psychological variables. A review of this latter research, however, reveals no instance where the relationship between a Protestant Ethic attitude and a capitalistic spirit attitude is investigated. Instead, the former is inferred from one' church affiliation or involvement and/or the latter is inferred from one' class standing, upward mobility, or the like. Using college students as subjects, the research reported here measures a worldview identified as “innerworldly ascetic” (i.e., applicable to more than Protestants) and investigates its relationship with a number of rational capitalistic attitudes.