I just came across a researcher who collected his data using cross-sectional design in 2004. He continued publishing different papers using the same data until 2015 while purporting to test different models using different constructs and questionnaires.
1. Is it correct to change authorship of the manuscripts to mask this unethical practice as done by the author (s)?
2. What should come first. The questionnaire design or the data collection?
3. If I want to publish a paper on this issues, should I submit the work as a critical review or a normal research paper?
4. When can a data be viewed as expired?