Experimental Method

Question 1

Experimental method:

Answer 1

Involves the manipulation of an independent variable to measure the effect on the dependent variable.

Question 2

Aim

Answer 2

A general statement of what the researcher intends to investigate; purpose of the study

Question 3

Hypothesis

Answer 3

A clear, precise, testable statement that states the relationship between the variables to be investigated.

Question 4

Directional hypothesis:

Answer 4

States the direction of the difference or relationship.

Question 5

Non-directional hypothesis:

Answer 5

Does not state direction.

Question 6

Variables:

Answer 6

Any ‘thing’ that can vary or change within an investigation.

Question 7

Independent Variable:

Answer 7

An aspect of the experimental situation that is manipulated by the researchers, so the effect on the DV should be caused by the change in the IV.

Question 8

Dependent Variable:

Answer 8

The variable that is measured by the researched, any effect on the DV should be caused by the change in the IV.

Question 9

Operationalisation:

Answer 9

Clearly defining variables in terms of how they can be measured

Question 10

When are directional hypotheses used?

Answer 10

When the findings of previous research studies suggest a particular outcome.

Question 11

When are the non-directional hypotheses used?

Answer 11

When there is no previous research or findings from earlier studies are contradictory.