The survey tool and questionnaires had been tested on a pilot sample to determine reliability of the survey tool and questionnaires to contribute into study outcomes in terms of conclusion validity, construct validity, external validity and internal validity (Cook & Campbell, 1979). The focus group interviewers were educated on the survey tools and questions to ensure the interviewer voice inflection didn’t result into biasness of the results. Please read here. https://www.journalfirst.com/written-argumentative-topic-what-is-knowledge.html
 

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