experimental method

Question 1

what is an aim?

Answer 1

a general statement that describes the purpose of an investigation

Question 2

what is a hypothesis?

Answer 2

a precise and testable statement of what the researchers predict will be the outcome of a study. contains both the IV and DV.

Question 3

directional hypothesis

Answer 3

states the direction of the difference or correlation (one-tailed)

Question 4

non-directional hypothesis

Answer 4

does not state the direction of the difference or correlation (two-tailed)

Question 5

independent variable

Answer 5

the variable that the researcher manipulates

Question 6

dependent variable

Answer 6

the variable that the researcher measures. it is affected by the manipulation of the IV

Question 7

operationalising variables

Answer 7

how a variable is defined by the researcher and the way in which it is measured for the purpose of the research

Question 8

operationalised hypothesis example

Answer 8

“after drinking 300ml of energetic drink, participants say more words in the next 5 minutes than participants who drink 300ml of water”