This lengthy chapter is divisible into two parts. In the first we tackle the definition of style and discuss where it resides, how it is produced, its function as a medium of information exchange, and its behavioral basis. In the second, we present critical analyses of four studies of manifestations of stylistic behavior on scales greater than that of a single community, three of which are genuinely regional in their scope. Why devote what might seem disproportionate space to this topic? Because there would be no archaeology if archaeologists did not regard the form of artifacts as in some manner informing on the culture that produced them. In 1912 when the Abbé Breuil (1913) delivered his classic address he relied on morphological differences in a variety of bone and stone tool types to distinguish cultural subdivisions of the European upper paleolithic and as a basis for inferring their evolutionary relationships. A characteristic European neolithic decorative tradition defines the “Linear Pottery culture,” and so on.