Reexamines existing research in persuasion by testing the predispositional and alignmental hypotheses. Evidence of past investigative failures is discussed and implications for future research are presented. (MH)

The use of mathematical models in the experimental analysis of behavior has increased over the years, and they offer several advantages. Mathematical models require theorists to be precise and unambiguous, often allowing comparisons of competing theories that sound similar when stated in words. Sometimes different mathematical models may make…