Please make a 500 word comment on the following subject, please follow guidelines regarding background literature search and examples:

Improper Practices in the Field While Collecting Data

Market researchers often employ trained interviewers for completing the data collection part of the research design. Often tactics employed by these interviewers aresubject to criticism and may seriously impact the validity of the data collected and the value of the research itself. What do you think are the reasons behind such improper practices? What are the various types of improper practices that have been seen to occur in field data collection? What can the researcher do to discourage such practices? Please use some background literature search as well as actual examples of such practices (inadvertent and/or cheating) to make this a lively discussion.