Method used for establishing reliability of the questionnaire:

The Test-retest method assesses reliability by administering the same questionnaire to the same group of individuals on two separate occasions and then correlating the scores. High correlation indicates good reliability, meaning the instrument yields consistent results over time, measuring stability.

• The Split-half method assesses internal consistency by dividing the test into two halves and correlating the scores.
• The Rational equivalent method (e.g., Kuder-Richardson formulas) also assesses internal consistency, measuring how well items within a test are correlated.
• The Parallel form method involves creating two different but equivalent versions of a test and administering them to the same group to check consistency between forms.