RM - Investigator Effects

Question 1

Definition of Investigator Effects

Answer 1

when the researcher’s behaviours/characteristics either consciously/ unconsciously influence the outcome of the research (MP1). e.g the researcher’s gender/mood/facial expression/tone may influence how the ppt responds in the self report (MP2)

Question 2

How to control investigator effects?

Answer 2

• train experimenters to use a neutral tone of voice in the way they greet ppts or ask questions
• ensure researcher is the same gender as the ppts
• provide a standardised script for the researchers to use so that they’re asking questions/giving instructions in the same way
• If researcher is aware of the aims of the study, DOUBLE BLIND