Variables

Question 1

Extraneous variables

Answer 1

-Any variable other than the iv,that may have an effect on the dv if it is not controlled at the start of the study by the researcher.e.g age
-these are described as nuisance variables that do not vary systematically with the iv ,which makes it harder to detect a result

Question 2

Confounding variable

Answer 2

Any variable other than the iv that may have affected the dv so wee cannot be sure of the true source off changes to the dv e.g personality
-also confounding vary systematically with the iv

Question 3

Demand characteristics

Answer 3

Any cue from the researcher or from the research situation that may be interpreted by participants as revealing the purpose of the investigation
-this may lead participants to act in a certain way that they think is expected of them to please the researcher or may deliberately underperform to sabotage the results of the study =extraneous variables that may affect the results of a study as the behaviour is no longer natural

Question 4

Investigator effects

Answer 4

Any effects