Demand Characteristics
Things that encourage participants to act in a certain way.
e.g. The participant has realised the aim of the study, which can lead to the participant to behave how they think they should.
Investigator Effects
The researcher may, at an unconscious level, behave in such a way as to bring about their prediction
Single Blind Technique:
The participants do not know the hypothesis they are in or what condition they are in
Double Blind Technique:
Neither the participants nor the experimenter knows the hypothesis or the condition. This involves someone else carrying out the data collection on behalf of the experimenter
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