Develop and validate CPI questionnaires to measure mental processing in steel industry

Background: In most industrial environments, people are exposed to noise on a daily basis. In this study, due to the lack of brain processing questionnaires in the field of adults and industries, new CPI questionnaires with general focus on all adults and industries were designed, psychometrically and reliably. Objectives: In this study, an attempt has been made to use the California Cognitive Processing and Personality Questionnaire based on the cognitive characteristics of Iranian employees. Methods: To determine the validity of the questionnaire, face validity and content validity methods were used. CVR and CVI were used to evaluate the validity of quantitative content. The reliability of the questionnaire was then assessed by alpha-chronobach method. Results: In this study, the study of qualitative formal validity showed that it is necessary to remove 23 questions from 50 questions. The value of CVI and CVR is higher than 79 / respectively. And 0.56 was obtained. The results of this study showed that the questionnaire designed in terms of content validity index is higher than their standard, which is 0.84 and 0.56, respectively. Conclusions: The obtained alpha coefficient indicates that the questionnaire is strong in terms of internal compatibility. As a result, the questionnaire designed to examine the impact of noise on processing and mental performance of employees in current industries should be useful.