2.2.10 - experimenter effects, demand characteristics and control issues

Question 1

what are experimenter effects?

Answer 1

the ways an experimenter may influence the outcome of an experiment by their actions or mere presence

Question 2

what is the Hawthorne effect?

Answer 2

when the presence of a researcher affects performance in a task

Question 3

what are demand characteristics?

Answer 3

when the effect of the experimenter causes pps to alter their behaviour to meet the real or imagined expectations of the experimenter

Question 4

what is standardisation?

Answer 4

making an experiment the same experience for all pps

Question 5

what are standardised instructions?

Answer 5

a set of instructions given to all pps which eliminate experimenter effects as there is no potential for the experimenter to give verbal or non-verbal cues

Question 6

what is a single-blind procedure?

Answer 6

when pps are unaware of the aim of a study so it doesn’t affect how they perform

Question 7

what is a double-blind procedure?

Answer 7

when neither the pp or researcher knows the aim of a study, to eliminate experimenter effects.