Variables

Question 1

Extraneous variables

Answer 1

Any variable other than the IV that may have effect on the DV if not controlled
•noise •age

Question 2

Confounding variables

Answer 2

Any extraneous variable that varies systematically with the IV so that we can not be sure of the true source of change to the DV

Question 3

Demand characteristics

Answer 3

Any Q from the researcher, or from the research situation may lead participants to change their behaviour

Question 4

Investigator effect

Answer 4

Any effect of the investigators behaviour, conscious/unconscious and dependent variable
-designs of study
-interactions

Question 5

Randomisation

Answer 5

The use of chance to control the effects of bias participants being randomly allocated to the different conditions

Question 6

Standardisation

Answer 6

Using the exact same, formalise procedures and instructions for all participants

Question 7

Blind procedure

Answer 7

Participants don’t know what group there in reduced demand characteristics (single-blind)

Question 8

Double blind

Answer 8

Neither participant, investigate. I know which condition they’re taking part in.