Finasteride 5mg Sexual Side Effects caused by knowing too much?

In a study that was published in The Journal of Sexual Medicine. in 2007 (4(6):1708-12. Epub 2007 Jul 26. ), it showed the people who are informed about possible side effects of 5mg finasteride reported significant higher rate of side effects than those who were not informed, which suggests a lot of people who have side of effects from using finasteride may not come from the drug itself, rather it is a  result of nocebo effect. 

See the details of the study below.

INTRODUCTION Of STUDY: