ABSTRACT
This chapter considers a wide range of other studies involving quantifiers. It looks at research on extended syllogisms, or sorites; these involve more than two premises and produce an unusual and unexplained pattern of results. The chapter examines studies of multiple quantifiers, an area which has only attracted research interest. Formal rules can be applied to multiply-quantified sentences, though no complete account has yet been offered. Johnson-Laird et al. put forward their own version of a formal rules theory, but the predictions made by this were directly contradicted by the data. The chapter reviews a number of different areas involving reasoning with quantifiers. The reason for the identification of belief bias with syllogisms seems to be largely historical. Certainly, it has been known right from the beginning of psychological research on syllogisms that the type of material used can affect the responses produced.
