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Pilot experiment
A pilot study, pilot project or pilot experiment is a small scale preliminary study conducted in order to evaluate feasibility, time, cost, adverse events, and effect size (statistical variability) in an attempt to predict an appropriate sample size and improve upon the study design prior to performance of a full-scale research project.〔Hulley, Stephen B. ''Designing Clinical Research''. Lippincott Williams & Wilkins, 2007, p.168-169.〕 Pilot studies, therefore, may not be appropriate for case studies.
==Implementation of pilot studies==
Pilot experiments are frequently carried out before large-scale quantitative research, in an attempt to avoid time and money being wasted on an inadequately designed project. A pilot study is usually carried out on members of the relevant population, but not on those who will form part of the final sample. This is because it may influence the later behaviour of research subjects if they have already been involved in the research.〔Haralambos and Holborn (2000); p.998〕
A pilot experiment/study is often used to test the design of the full-scale experiment which then can be adjusted. It is a potentially valuable insight and should anything be missing in the pilot study it can be added to the full-scale (and more expensive) experiment to improve the chances of a clear outcome.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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