A pilot study is effectively a trial run of a research method, usually with a very small sample, in order to ensure that the method will work as intended.
A pilot study is like a pre-test to ensure the materials and procedures run smoothly.
A pilot study allows the research design to be amended in order for it to work before too much time and money has been invested.
Pilot studies are small, trial versions of proposed studies to test their effectiveness and make improvements.
Pilot studies are helpful in identifying potential issues early, which can then be rectified before committing to the length and expense of a full investigation.
The pilot study is an important part of the experimental process and is good practice which is widely used.
Pilot studies are useful to identify a floor effect - sometimes the task is too hard because none of the participants can score at all or complete the task, so performance is low.
Pilot studies are useful to identify a ceiling effect - when the task is so easy that all participants achieve high marks or top performances, so are 'hitting the ceiling.'
Pilot studies also provide researchers with preliminary data to gain insight into their proposed experiment’s potential results.
To avoid bias, pilot studies are usually carried out on individuals who are as similar to the target population but not those who will be a part of the final sample.
Before experiment, pilot studies are conducted
This is a small scale trial run of the actual investigation.
Why use these?
To test the procedure and check that the investigation runs smoothly
Are the instructions clear? Is the task manageable? etc
Helps to identify any potential issues so they can be modified.