extraneous variables 0.0 / 5 ? PsychologyResearch methods and techniquesA2/A-levelAQA Created by: grace_netballCreated on: 29-10-18 16:35 investigator effects body language facial expressions emphasising certain words tone of voice controlled by: double blind design: - neither participant nor researcher knows the aim of the experiment inter rater reliability - 2 researchers and you compare results 1 of 4 Participant variables mood diet sleep IQ fitness controlled by: Randomisation - randomly allocating participants into groups Dont use independent measures counterbalance if using repeated measures - ABBA technique balances out any order affects 2 of 4 situational variables time of day noise light controlled by: standardisation - keeping the procedure and instructions the same each time for every participant counterbalance - ABBA technique to balance out order effects 3 of 4 demand characteristics behaving the way you think you ought to trying harder in a certain condition because you should do better in that condition behaving formally in an interview controlled by: single blind design / deception - the participant doesnt know the aim of the experiment 4 of 4
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