validity and reliability of research instrument

Construct validation resulted in 34 items (4 items were eliminated after Exploratory and Confirmatory Factor Analysis, and 2 items were eliminated after RASCH analysis) spread over five constructs, namely environmental behavior, environmental knowledge, environmental values, environmental attitudes, and environmental habits. The content validity results obtained CVI scores ranging between 0.8 and 0.9 with a good category, while item reliability was in a fairly good category with a high level of separation index. The construct validity was analyzed using exploratory factor analysis, confirmatory factor analysis, and RASCH analysis. The instrument content validation was analyzed by three experts using content validity index (CVI). It was implemented on 1,398 students from 15 universities in Indonesia. The instrument consists of 40 statement items consisting of 5 aspects, namely private pro-environmental behavior, public pro-environmental behavior, environmental knowledge, environmental values, and environmental attitudes. This study is meant to develop and validate a green character instrument which reveals student behavior and awareness of the environment.

However, there is no instrument used to measure all these aspects in one comprehensive instrument. Open Access This is an open access article distributed under the CC BY-NC license ( ).Many researchers have separately developed instruments to measure environmental characteristics such as attitudes, values, and knowledge. The reliability test results are a reliable instrument to measure the internalization of character education values, namely with a Cronbach’s Alpha score of 0.846. The validity test results are a valid instrument to measure the internalization of character education values, that is, all items value α < 0.05. While the reliability test uses Cronbach’s Alpha. Analysis of the validity test using the Pearson Product Moment correlation formula. The respondents in this study were 158 students.

The questionnaire was composed of 18 questions. The instrument used to measure internalization of character education is a closed questionnaire. This study aims to measure the validity and reliability of character education. But there is not yet a standard instrument in measuring the internalization of character education. Character education is now a topic that is often discussed in seminar forums.

Validity and reliability of research instrument