Test-Retest Reliability: For Both Types: Test-retest reliability assesses the stability of measurements over time. It can be used for both Likert-type and dichotomous variables. For Likert-type variables, participants would respond to the same questionnaire twice, while for dichotomous variables, you'd calculate the agreement between responses at two different time points. Intraclass Correlation Coefficient (ICC): For Both Types: ICC is useful when you want to assess the reliability of measurements taken by multiple raters or on multiple occasions. It can be applied to both continuous and dichotomous data.
