EXPERIMENTAL METHOD

Question 1

What is an experiment

Answer 1

Determining a hypothesis by manipulating an independent variable to find a dependant variable .

Question 2

Types of hypothesis

Answer 2

Null hypothesis- goes in neither direction
experimental hypothesis there will be a difference between two conditions and an iv
Directional hypothesis- goes in one conclusive direction

Question 3

Laboratory experiments

Answer 3

Under controlled conditions measuring the effect of a manipulated iv on a dv
Controlled in order to minimise effect of extraneous variables preventing them from becoming confounding

Question 4

Laboratory experiments evaluation

Answer 4

High degree of control over extraneous variable providing a high degree of internal validity allowing conclusions about cause and effect to be drawn between the IV and the DV
- lack external validity/ecological findings of study cannot always be generalised ti everyday life occurrences

Question 5

field experiment

Answer 5

reasearcher goes to pp usual environment rather than bringing into lab

Question 6

field evaluation

Answer 6

+high degree of mundane realism
-loss of control over confounding and extraneous
- cause and effect much harder to replicate than a lab study
-ethical issues eg lack of consent

Question 7

natural experiment

Answer 7

event naturally occuring no iv manipulated can still be tested in a lab but researcher has no control over the iv

Question 8

natural evaluation

Answer 8

+high ecological validity real world setting and occurence
-naturally occuring event may be rare therefore hard to generalise

Question 9

quasi experiment

Answer 9

iv based on an existing differenve between people eg eye colour iv iosnt manipulated it simply exists

Question 10

quasi evaluation

Answer 10

+ often carried out under controlled conditions so can be replicated
- may be confounding variavles as cannot randomly allocate