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Without a sound rationale, a systematic presentation of previous research, a logical progression of ideas that culminate in the purpose statement, and research questions and hypotheses if appropriate, that emanate directly from theory and research, the author will probably not convince the reviewers that the study is a meritorious one that will extend the boundaries of knowledge.
Three types of error are as follows:
Key variables implemented to test theoretical predictions should be justified in the Introduction.
Two frequent problems in introducing variables:
The research question should contribute to the knowledge base by going beyond previous research. The question to be answered is "What does this study contribute that is different from previous research?" If the answer to this question is unclear, then the author needs to step back and reevaluate how to make a convincing argument for the merit of the study.