Laros, Jacob Arie2024-03-212024-03-212018-01https://hdl.handle.net/20.500.14135/986This dissertation consists of three studies concerning the lexical approach of research in the field of personality, with a focus on Brazilian culture and natural language. The first study is of a theoretical nature and explores some of the criticisms regarding the lexical approach to personality research with its origin in the psychological study of natural language and crosscultural psychology, as well as methodological propositions coming from these fields. A historical review of the development of the lexical approach is also presented. The second manuscript reports a study that aimed to generate a set of Brazilian Portuguese personality descriptors using the social network Twitter as a trait source. As a result, we obtained a list of potentially relevant descriptors for the construction of a Brazilian personality taxonomy, with 1,454 adjectives, six names, 10 pronouns, and 383 nouns. The third manuscript reports dimensional analyses of a corpus recovered from Twitter regarding 172 adjectives and 86,899 subjects. The results suggest two suitable candidate models for future research, one with seven and another with 14 dimensions. Methodological and theoretical issues and the potential contributions from these studies for future research in the field of personality are also discussed.Documento textualengAcesso abertoLinguagem NaturalLinguística DescritivaPsicologia da LinguagemTese120802