control of variables

Question 1

what is the difference between extraneous and confounding variables?

Answer 1

> an extraneous variable is all the possible variables which might interfere with the DV,
whereas the confounding variable is one which has definitely interfered with the DV.

Question 2

what is a participant variable and an example of one

Answer 2

differences between participants that may affect the DV (e.g - age, gender)

Question 3

what is a situational variable and an example of one

Answer 3

features of the experiment design that may affect the DV (e.g - noise level, instructions, temperature)

Question 4

what is mundane realism?

Answer 4

degree to which the materials and procedures involved in an experiment are similar to events that occur in the real world

Question 5

what is an example of mundane realism?

Answer 5

an experiment where participants are asked to read a news article on local politics in another country, has MUNDANE REALISM

Question 6

define validity

Answer 6

the extent to which the observed effect is a genuine one

Question 7

what are the two types of validity - define each one

Answer 7

> internal validity - is about control and realism
external validity - is about generalising the results to other people and situations

Question 8

what are the three types of external validity?

Answer 8

ecological
population
historical

Question 9

what is ecological validity?

Answer 9

generalising the results to another envt (e.g - lab setting to school setting)

Question 10

what is population validity?

Answer 10

generalising the results to all types of people (e.g - culture, age, gender)