Montreal-Toulouse language assessment battery for aphasia: validity and reliability evidence.
BACKGROUND
In Brazil, no standardized instruments are available to assess language in patients with aphasia.


OBJECTIVE
The aim of the current study was to search for reliability and validity evidence for the Montreal-Toulouse Language Assessment Battery (MTL-BR).


METHODS
The sample was composed of 537 adults, of whom 463 were healthy individuals and 74 had neurological lesions (25 participants had right hemisphere brain damage, 21 had left hemisphere damage (LHD) with aphasia and 28 had LHD without aphasia). Reliability was assessed by internal consistency (Cronbach's alpha) and test-retest analyses. Test-retest reliability was calculated using the Pearson correlation coefficient, and a repeated measures analysis of variance, with years of education as a covariate. Construct validity was verified by correlations between scores in MTL-BR subtest and similar tasks from other language assessment instruments.


RESULTS
Internal consistency was satisfactory (Cronbach's alpha between 0.79 and 0.90), as were correlations between test and retest scores (mean 0.52), and between the MTL-BR and scores in similar instruments.


CONCLUSIONS
The present results suggested that the MTL-BR battery had adequate reliability and validity as a method for diagnosing and monitoring aphasia.
Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
Karina Carlesso
KC
Pagliarin
Federal University of São Paulo, São Paulo, Brazil.
Karin Zazo
KZ
Ortiz
Federal University ABC, São Paulo, Brazil.
Maria Alice de Mattos Pimenta
MA
Parente
Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
Adriane
A
Arteche
Université de Montréal, Montreal, Canada.
Yves
Y
Joanette
Université Toulouse II - Le Mirail, Toulouse, France.
Jean-Luc
JL
Nespoulous
Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
Rochele Paz
RP
Fonseca
D000328:Adult; D000368:Aged; D001037:Aphasia / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007802:Language; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests / Q000592:standards*; D011594:Psychometrics; D015203:Reproducibility of Results
Language; adults; assessment; test validity