<Li> Avoid temptation: If the experiment is performed again, avoid asking the participants what they have experienced . </Li> <Li> The more the merrier: To avoid experimenter bias, have more than one experimenter . </Li> <Li> Be specific and clear: If the purpose of the experiment is not clear or ambiguous, then the participants may guess many different hypotheses and cause the data to be skewed even more . </Li> <Li> Double blind: Do not inform the person who has contact with the participants about the research hypotheses . This reduces the experimenter - expectancy effect . </Li>

When participants guess the aim of the study