Few meaningful sex differences will be reported if investigators go beyond the reporting of statistical significance to determine the indices of experimental effect size. Techniques for obtaining this type of information include the calculation of d and the estimate of omega squared, which indicate the advisability of continuing a line of investigation. The data gathered on 303 women and 198 men resulted in conventional estimates for significance, but when omega-squared scores were calculated, only about four percent of the variance in scores on several measures of interests, attitudes, values and personality could be assigned to the sex variable alone. This information may be of value in the interpretation of counseling instruments as well as theory building about sex-role development. (BN)