Brains conditional statements

“The two main psychological theories of the ordinary conditional were designed to account for inferences made from assumptions, but few premises in everyday life can be simply assumed true … But what is the probability of the ordinary conditional and how is it determined? … Our account can explain why most people give the conditional probability as the probability of the conditional, but also why some give the conjunctive probability.” David E. Over, Jonathan St B.T. Evans (2003) The Probability of Conditionals: The Psychological Evidence 
Mind & Language 18 (4), 340–358.