For humans, popular candidates include reasoning about objects, other intentional agents, language, and number. Researchers in this field seek evidence for domain specificity in a variety of ways. Some look for unique cognitive signatures thought to characterize a domain (e.g.
In the study of human cognition, researchers investigate whether different areas of knowledge or reasoning abilities exhibit distinctive characteristics. Some researchers focus on identifying specific cognitive signatures associated with particular domains like objects, other agents, language, and numbers.