Control of variables

Question 1

extraneous variables

Answer 1

any variable other than the IV that affects the DV

Question 2

confounding variables

Answer 2

the same as the extraneous BUT VARY WITH THE IV
not sure of the true source of change to the DV

Question 3

demand characteristics

Answer 3

cues from the researcher/situation which may be interpreted by the participants as revealing a purpose of the study
therefore they may behave in a way that they THINK is expected

Question 4

investigator effects

Answer 4

unconscious OR conscious behaviour of the investigator (researcher) that can effect the outcome of the DV (smiling more at the particpiants, leading questions)

Question 5

randomisation

Answer 5

the use of chance to control the effects of bias as a way to control investigator effects

Question 6

standardisation

Answer 6

using identical procedures/insturctions for all participants