The experimental method - aims, hypotheses and variables

Question 1

What is the experimental method?

Answer 1

Involved the manipulation of an IV to measure the effect on the DV

Question 2

What is an aim?

Answer 2

A general statement about the investigation

Question 3

What is a hypothesis?

Answer 3

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

Question 4

What are the two types of hypotheses?

Answer 4

Experimental or alternative/research

Question 5

Whats the difference between a directional hypothesis and a non-directional hypotheses?

Answer 5

A directional hypothesis makes clear the sort of difference that is expected between two conditions or two groups of people and a non-directional hypothesis simply states that there will be a difference but the nature of the difference is not specified

Question 6

What is a null hypothesis?

Answer 6

It predicts that there will be no difference

Question 7

What is an Independant variable?

Answer 7

The variable that is made to change (manipulated) by the research or changes naturally

Question 8

What is a dependant variable?

Answer 8

The variable that is being measures, the variable that changes as a result of manipulating the IV

Question 9

What’s operationalisation?

Answer 9

Clearly defining what you mean, a detailed defitnition of what the variable is and what you are changing or measuring precisely