Variable Affecting Research

Question 1

Extraneous + confounding variable

Answer 1

Extraneous - not part of DV but could have impact on findings

Confounding - extraneous but did impacted on findings

Question 2

3 types of variables that need to be controlled

Answer 2

Participant variable - age, gender, occupation

Situational variable - demand characteristics, location of experiment, order effect (getting bored)

Experimenter variables - subtle cues from experimenter affecting results unconsciously or not

Question 3

Controlling participant variables

Answer 3

Make sample large + random = represent able
Use repeated or matched pair to control variables
Randomly locate participant to different group

Question 4

Controlling situational variables

Answer 4

Standardised
-instruction: follow the same instruction other get
-procedure: maintaining same environment

Counterbalance to see does demand characteristics play effect
-single bind to avoid or deception

Question 5

Controlling experimenter effect

Answer 5

Double blind - so no bias
Inter rater reliability - so reliable