How do people make inferences? How do their reasoning processes differ and why? Methods of Thought attempts to answer these questions by looking in detail at the different reasoning strategies people apply, how these are acquired, how they are selected and how use of these strategies is influenced by individual and task properties. Focusing on empirical data and research into deductive reasoning tasks, this book summarizes current trends in the field and helps us to understand how individual differences in reasoning impact on other studies of higher cognitive abilities in humans.