This study examined the effects of interviewer self-disclosure on
the self-disclosure of 40 male prison inmates and 40 male university
students. A four-point scale was used for rating the intimacy of selfdisclosure, the number of statements were counted for scoring the breadth
of self-disclosure, and a stop watch was used to time the duration of
self-disclosure. The three measures correlated highly with each others
indicating all were good measures of self-disclosure. The self-disclosure
reciprocity effect was demonstrated with both prison inmates and university
students. It was also found that overall, prison inmates self-disclosed
significantly less < .05) than university students. The personality
variables of extroversion and neuroticism, as measured by the Eysenck
Personality Inventory, were also examined. Prison inmates were significantly lower than university students on extroversion < .001) and
no different than university students on neuroticism. It was also found
that extroversion was positively related to self-disclosure. However,
neuroticism was not related to either self-disclosure or to extroversion
