摘要:This paper aims to present the fundamental aspects for the development and validation (D&V) of attitudes’ measurement scale, as well as its practical aspects that are not deeply explored in books and manuals. These aspects are the results of a long experience of the authors and arduous learning with errors and mistakes.,The nature of this paper is methodological and can be very useful for an initial reading on the theme that it rests. This paper presents four D&V stages: literature review or interviews with experts; theoretical or face validation; semantic validation or validation with possible respondents; and statistical validation.,This is a methodological paper, and its main finding is the usefulness for researchers.,The main implication of this paper is to support researchers on the process of D&V of measurement scales.,Became a step-by-step guide to researchers on the D&V of measurement scales.,Support researchers on their data collection and analysis.,This is a practical guide, with tips from seasoned scholars to help researchers on the D&V of measurement scales.