control of variables Flashcards
1
Q
what are extraneous variables?
A
nuisance variables randomly distributed (effects have to minimised)
2
Q
what are confounding variables?
A
nuisance variable that varies systematically with the IV
could be this affecting the DV
3
Q
what are demand characteristics?
A
participants guess the aim of the study and alter their behaviour
(please u, screw u)
4
Q
what are investigator effects?
A
- unconscious influence of researcher on the research situation
5
Q
what is randomisation?
A
- use of chance to reduce researcher influence
6
Q
what is standardisation?
A
- ensuring all participants are subject to same experience
