People cannot contemplate a proposition without believing that proposition. A model of belief fixation is sketched and used to explain hitherto disparate, recalcitrant, and somewhat mysterious psychological phenomena and philosophical paradoxes. Toward this end I also contend that our intuitive understanding of the workings of introspection is mistaken. In particular, I argue that propositional attitudes are beyond the grasp of our introspective capacities. We learn about our beliefs from observing our behavior, not from introspecting our stock beliefs. -/- The model (...) of belief fixation offered in the dissertation poses a novel dilemma for theories of rationality. One might have thought that the ability to contemplate ideas while withholding assent is a necessary condition on rationality. In short, it seems that rational creatures shouldn‘t just form their beliefs based on whatever they happen to think. However, it seems that we are creatures that automatically and reflexively form our beliefs based on whatever propositions we happen to consider. Thus, either the rational requirement that states that we must have evidence for our beliefs must be jettisoned or we must accept the conclusion that we are necessarily irrational. (shrink)

In this article I am not going to try and define introspection. I am going to try to state as precisely as possible how the practice of introspection can be improved, starting from the principle that there exists a disjunction between the logic of action and of conceptualization and the practice of introspection does not require that one should already be in possession of an exhaustive scientific knowledge bearing upon it. . To make matters worse, innumerable commentators upon what passes (...) for introspection do not seem to have practised it and have certainly never contributed anything to its development. My aim is therefore to bring to light a procedure for progressive improvement in the practice of introspection when it is employed in a programme of research. (shrink)