One hundred eighty-five conversations in which a college student attem
pted to convince a friend to adopt a health or safety precaution were
examined. A detailed category coding system was developed to describe
the content of such conversations and to answer nine specific question
s about these interactions. Among other results, the data showed that
subjects spend very little time describing the nature of the harm that
might occur and usually speak of protection in dichotomous, all-or-no
ne terms rather than acknowledging degrees of risk. Much time is spent
discussing the correct actions to take and the problems faced in carr
ying out these actions. Initial and 2-month assessments of persuasiven
ess found no significant relationships between the presence of specifi
c themes and changes in intentions or behavior. The observed content o
f these conversations is discussed in relation to current theories of
self-protective behavior and likely mechanisms of social influence.