Research methods

Question 1

Define the term experimental method

Experimental method

Answer 1

Involves the manipulation of an independent variable (IV) to measure the effect of a dependent variable (DV)

Question 2

Define the term aim

Experimental method

Answer 2

A general statement of what the researcher intends to investigate

The purpose of the study

Question 3

Define the term hypothesis

Experimental method

Answer 3

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

Question 4

Define the term variable

Experimental method

Answer 4

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

Variables generally used in experiments to determine if changes in one thing result in changes to another

Question 5

Define the term independent variable

Experimental method

Answer 5

Some aspect of the experimental situation that is manipulated by the researcher - or changes naturally - so the effect on the DV can be measured

Question 6

Define the term dependent variable

Experimental method

Answer 6

The variable that is measured by the researcher

Any effect on the DV should be caused by the change in the IV

Question 7

Define the term operationalisation

Experimental method

Answer 7

Clearly defining variables in terms of how they can be measured

Question 8

Define the term directional hypothesis

Experimental method

Answer 8

States the direction of the difference or relationship

Question 9

Define the term non-directional hypothesis

Experimental method

Answer 9

Does not state the direction of the difference or relationship