research issues

Question 1

Extraneous and confounding variables

Answer 1

• extraneous variables (evs) are nuisance variabes that don’t vary systemically with the iv.A researvjert may control some of these
• confounding variables (cvS) change systematically change in the dv is due to the cv or the iv,cvs must be controlled

Question 2

Demand characteristics

Answer 2

refers to any cue from the researcher or researcher situation that may reveal the aim of the study

Question 3

Investigator effects

Answer 3

Any effect of the investigators behaviour on the outcome of the research (the dv)