Aims,Hypotheses, Variables

Question 1

What is an aim and what is an Hypothesis?

Answer 1

An aim states what you are investigating
A hypothesis predicts what will happen in an experiment

Question 2

What are the two types of hypothesis?

Answer 2

Experimental/Alternative hypothesis
Null Hypothesis

Question 3

What is an experimental hypothesis and what are the types?

Answer 3

Experimental Hypothesis states that the IV will affect the DV
Directional/ One-tailed Hypothesis- Predicts how the IV will affect the DV “Boys will remember more than girls”
Non-directional/ Two-tailed hypothesis states that there will be an effect “Gender will affect memory”

Question 4

What is a null hypothesis?

Answer 4

A null hypothesis states that the IV will not affect the DV

Question 5

What is an IV and what is a DV?

Answer 5

IV- Variable that you change, for example, gender in Sheridan and King’s experiment

DV- Variable that you measure, for example, obedience in Sheridan and King’s experiment

Question 6

What is operationalisation?

Answer 6

Devising way of measuring variables
For an IV it would be how to change the variable
For DV it would be how to measure the variable

Question 7

What is an Extraneous variable and what is a confounding variable?

Answer 7

• CV/ Confounding Variable - Third variable that influences DV
• EV/ Extraneous Variable- An extraneous variable is any uncontrolled factor that ,may influence the results of an experiment (Not for definite)