STRENGTHS AND LIMITATIONS
tiredness, blindness
BLINDNESS
One of the strengths of this study is that standard and valid questionnaires were used in this study, and the psychometric properties of these questionnaires have been assessed in Iran already.Nonetheless, these results must be interpreted with caution, and a number of limitations should be borne in mind. Despite the non‐randomized sampling and potential selection bias, the study variables were not statistically different in the three groups at the beginning of the study. Randomized design with more samples in the future may provide more consistent evidence in this issue. Another limitation was the lack of blindness of the intervention; there is a possibility of performance bias. The other limitation of this project was that the questionnaires were self‐reports, so individual differences, tiredness, and boredom were the factors that could affect their responses. Therefore, the researcher emphasized the confidentiality of the information and explained the importance of their responses to decrease the error resulting from this limitation. Finally, that the participants may have had online searches and used other resources is another limitation of this study.