#questionnaire

Design a valid and reliable survey instrument. Steps: 1. Define constructs to measure. 2. Review existing validated scales. 3. Write clear, unbiased questions (avoid double-barreled, leading). 4. Choose appropriate response scales (Likert, semantic differential). 5. Organize logically (demographics last). 6. Pilot test with small sample (n=20-30). 7. Assess reliability (Cronbach's alpha >0.7). 8. Validate with factor analysis. Keep under 10 minutes. Use branching logic. Ensure mobile-friendly. Tools: Qualtrics, SurveyMonkey. Calculate required sample size.