experimental methods

Question 1

what is an aim (2)

Answer 1

states the purpose of the study and is developed from theories
eg. to investigate whether drinking energy drinks makes people more talkative

Question 2

what is a hypothesis

Answer 2

statement that clearly states the relationship between variables investigated

Question 3

what is directional hypothesis

Answer 3

-states the direction in the relationship between 2 variables
-has previous research where the data suggests a p articular outcome

Question 4

what is non directional hypothesis

Answer 4

states there is a difference in the relationship between 2 variables

Question 5

what is the IV

Answer 5

variable that has been manipulated by researcher

Question 6

what is the DV

Answer 6

variable measured by researcher and has been caused by a change in the IV

Question 7

what is operationalising of variables (3)

Answer 7

-clearly defining the variables in terms of how theyre being measured
-controls for extraneous variables
-allows for objectivity and replicability
eg. after drinking 300ml of caffeine, p’s say more words in the next 5 minutes compared to p’s how drank 300ml of water