This study of 28 males study was oriented to discriminating impotence of biogenic origins from psychogenic etiology on the basis of a psychological inventory, the DSFI. Evaluation of the increase in predictive efficiency with use of the DSFI revealed it to be of value in clinical assessment of male potency disorders. (Author)

Results indicated that both gender and previous experience have significant effects. Gender appeared to have a less substantial effect than previous experience, being more noteworthy for the similarities manifest between males and females than the few differences observed. Effects were complex and often mediated by additional factors. (Author)