RESEARCH METHODS (Part4/5) (Questionnaires and interviews, experiments, correlations)

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DPI(7) QUESTIONNAIRES AND INTERVIEWS. 

Questionnaires: Keep questions and instructions easy to understand, avoid leading questions, keep the information minimal and relevant, being mindful of ethics and conduct a pilot study.

Interviews: Same as questionnaires but conducted face to facethe questions are pre-determined for constructed interviews, 

Validity: Affected by a biased sample (social desirability) to increase test face and concurrent validity.

Reliability: Affected by interviewer bias, to increase this test inter-rater reliability, if two interviewers produce the same outcome.

DPI(8) EXPERIMENTS

Experimental methods: 

Lab experiments:

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