Abstract

This paper argues that conceptual factors are as important as empirical factors in theory acceptance. Coherence between a new theory that is assessed for acceptance and the existing (established) theories in the same domain is among such conceptual factors. For example, a new theory about spectroscopy that does not cohere with established theories of spectroscopy is unlikely to be accepted, even if it was supported by empirical considerations. It is argued that a new theory coheres with a group of established theories when it shares important elements with these theories and contains no items that conflict with their central concepts and assumptions.