Questionnaire Translation and Psychometric Properties Evaluation

Even though a majority of the commonly used questionnaires were initially developed in English language, it is still possible to translate these questionnaires into another language. However, one should not simply assume that the validity of the items that are translated from one questionnaire to another remains intact. Therefore, it is important to translate the questionnaire using a process that incorporates the correct psychometric properties, such as the validity and reliability, before one can declare the translated questionnaire ready to be used.