title: Normative data of the Barratt Impulsiveness Scale 11 (BIS-11) for Brazilian adults.
abstract: OBJECTIVE
  The Barratt Impulsiveness Scale (BIS-11) is a valid and reliable instrument, and one of the most often used tools to assess impulsivity. This study assesses the performance of a large sample of adults by using a version of BIS-11 adapted to Brazilian Portuguese.
  
  
  METHODS
  We assessed 3,053 adults from eight Brazilian states. Internal consistencies and performance data were presented for two correction criteria of BIS-11: original and the two-factor score.
  
  
  RESULTS
  The associations between age, sex, region, and education and the BIS-11 scores present very small effect sizes. Therefore, we provided a percentile rank parameter for the different BIS-11 subscores considering the whole sample. Given the internal consistency of the two correction systems, we found that only the two-factor system fulfills the psychometric criteria of Cronbach's alpha (cutoff value of at least 0.6).
  
  
  CONCLUSIONS
  Our results support the use of the Brazilian adaptation of BIS-11 in different regions of the country as a measure of impulsivity. Since high impulsiveness is a characteristic of several dysfunctional behaviors, the establishment of normative parameters is of utmost relevance and should be extended to other age ranges and populations in future studies.
authors.affiliation: Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR.
authors.forename: Leandro F
authors.initials: LF
authors.lastname: Malloy-Diniz
authors.affiliation: Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR.
authors.forename: Jonas J de
authors.initials: JJ
authors.lastname: Paula
authors.affiliation: Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR.
authors.forename: Alina G
authors.initials: AG
authors.lastname: Vasconcelos
authors.affiliation: Universidade Federal do Rio Grande do Norte, Natal, RN, BR.
authors.forename: Katie M de
authors.initials: KM
authors.lastname: Almondes
authors.affiliation: Universidade Federal do Amazonas, Manaus, AM, BR.
authors.forename: Rockson
authors.initials: R
authors.lastname: Pessoa
authors.affiliation: Pontifícia Universidade Católica de Goiás, Goiânia, GO, BR.
authors.forename: Leonardo
authors.initials: L
authors.lastname: Faria
authors.affiliation: Instituto D'Or de Pesquisa e Ensino, Brazil, Rio de Janeiro, RJ, BR.
authors.forename: Gabriel
authors.initials: G
authors.lastname: Coutinho
authors.affiliation: Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR.
authors.forename: Danielle S
authors.initials: DS
authors.lastname: Costa
authors.affiliation: Universidade Federal da Bahia, Salvador, BA, BR.
authors.forename: Victor
authors.initials: V
authors.lastname: Duran
authors.affiliation: Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR.
authors.forename: Thales V
authors.initials: TV
authors.lastname: Coutinho
authors.affiliation: Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR.
authors.forename: Humberto
authors.initials: H
authors.lastname: Corrêa
authors.affiliation: Universidade de São Paulo, São Paulo, SP, BR.
authors.forename: Daniel
authors.initials: D
authors.lastname: Fuentes
authors.affiliation: Universidade Federal da Bahia, Salvador, BA, BR.
authors.forename: Neander
authors.initials: N
authors.lastname: Abreu
authors.affiliation: Instituto D'Or de Pesquisa e Ensino, Brazil, Rio de Janeiro, RJ, BR.
authors.forename: Paulo
authors.initials: P
authors.lastname: Mattos
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001938:Brazil; D003431:Cross-Cultural Comparison; D003466:Cultural Characteristics; D004522:Educational Status; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D007175:Impulsive Behavior; D008297:Male; D008875:Middle Aged; D011569:Psychiatric Status Rating Scales / Q000592:standards*; D011594:Psychometrics / Q000592:standards; D012015:Reference Standards; D015203:Reproducibility of Results; D057566:Self Report / Q000592:standards*; D055815:Young Adult