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Measurement of attitude: proposition of a protocol for preparation of scales/Mensuracao de atitude: proposicao de um protocolo de elaboracao de escalas
This theoretical essay aims to study how scales are developed and through which procedures they can be considered valid and suitable for use as legitimate scientific instruments. In this perspective, this paper's objective was to develop a protocol for constructing scales to measure attitude. T...
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Published in: | RAC - Revista de Administracao Contemporanea 2015-08, p.157 |
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Main Authors: | , |
Format: | Article |
Language: | Spanish |
Online Access: | Get full text |
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Summary: | This theoretical essay aims to study how scales are developed and through which procedures they can be considered valid and suitable for use as legitimate scientific instruments. In this perspective, this paper's objective was to develop a protocol for constructing scales to measure attitude. The proposed protocol is configured as a logical meeting of steps based on theorists such as Allport and Hartman (1925), Thurstone (1928), Likert (1932), Campbell and Fiske (1959) and Bock (1972), which permeate all aspects of drafting scales, including construct definition, the choice of the scale itself, item preparation, scale purification, and finally its validation. At the end of the study, we present a protocol for the preparation of specific scales to measure attitude that differs from existing protocols in Churchill (1979), Rossiter (2002) and DeVellis (2003). This is in order to unite for the first time a set of promising techniques, primarily the objective delineation of the construct using focus group methodology, the proposition of an inherently dichotomous scale, scale purification via item response theory (IRT), and predictive validity. Key words: attitude measurement; scale-proposition protocol; scale measurement; multiple scale. Este ensaio teorico dedicou-se a estudar como escalas sao formadas e a partir de que procedimentos e possivel considera-las validas e aptas para o uso como instrumento cientifico legitimo. Nesta otica, o objetivo deste artigo foi propor um protocolo de construcao de escalas de mensuracao de atitude. O protocolo proposto configura-se como a reuniao logica de passos baseados em teoricos como Allport e Hartman (1925), Thurstone (1928), Likert (1932), Campbell e Fiske (1959) e Bock (1972), que permeiam todo o caminho da elaboracao de escalas, quais sejam a definicao de Construto, a escolha da escala em si, a elaboracao dos itens, a purificacao da escala e, finalmente, a validacao desta. Ao final do estudo, apresenta-se um protocolo de elaboracao de escalas especifico para mensuracao de atitude que se diferencia dos protocolos vigentes de Churchill (1979), Rossiter (2002) e DeVellis (2003) ao reunir ineditamente um conjunto de tecnicas promissoras como, principalmente, a delimitacao objetiva do constructo por grupo focal, proposicao de uma escala em si dicotomica, purificacao da escala por teoria de resposta ao item (TRI) e validacao preditiva. Palavras-chave: mensuracao de atitude; protocolo de elaboracao de escala; mensuracao esca |
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ISSN: | 1415-6555 |
DOI: | 10.1590/1982-7849rac20151559 |