Using text analysis to quantify the similarity and evolution of scientific disciplines.

We use an information-theoretic measure of linguistic similarity to investigate the organization and evolution of scientific fields. An analysis of almost 20 M papers from the past three decades reveals that the linguistic similarity is related but different from experts and citation-based classifications, leading to an improved view on the organization of science. A temporal analysis of the similarity of fields shows that some fields (e.

What types of terms do people use when describing an individual's personality?

An important yet untested assumption within personality psychology is that more important person characteristics are more densely reflected in language. We investigated how ratings of importance and other term properties are associated with one another and with a term's frequency of use. Research participants were asked to provide terms that described individuals they knew, which resulted in a set of 624 adjectives.