Validation Report of the IMI questionnaire
- A summary report of results found in the validation process applied to the adapted Portugues version of the IMI questionaire of motivation can be found in the file: validation-motivation-surveys.pdf (read online)
This validation process was carried out using the R script: 03-validating-IMI.R, and the files generated by it in this folder are detailed in the following sections.
File: univariate-histogrtam.png
To perform the factorial analysis and reliability test, it is necessary to ensure the normality of responses on each item of the questionnaire.
File: cfa-model-fit.pdf
The factorial structure for the IMI questionnaire was validated using Confirmatory Factorial Analysis (CFA) over the second-order-factor model, multidimensional model, and bi-factor model. This file summarize the results of Goodness of fit statistics based on chi-square, AGFI, TLI, CFI and RMSEA values.
File: reliability-analysis.pdf
After to ensure the structure of the IMI questionnaire, we carried out reliability test with the responses to ensure the consistency and trustworthy of our instrumment. This file summarize the results of the reliability tests in which the Cronbach’s alpha greater than 0.70 is good, the Cronbach’s alpha greater than 0.80 is better, and the Cronbach’s alpha greater than 0.90 is the best.
File: RelAnalysis.xlsx
Report with the detailed information of the reliability test performed on each psychological factor of the IMI questionnaire. In addition to this information, the report included sheets about the sampling adequacy (using KMO method) and explanatory factorial analysis on the IMI questionnaire.