aims and hypotheses

Question 1

What is an aim

Answer 1

A statement of a serious purpose

Question 2

What is a one-tailed hypothesis (directional)

Answer 2

States directions of difference/relationship

Question 3

Give an example of a one tailed hypothesis

Answer 3

• more/less
• higher/lower
• faster/slower

Question 4

Give an example of when you use a one-tailed hypothesis

Answer 4

• being specific
• when there is research already published that supports your aim

Question 5

What is a two-tailed hypothesis (non-directional)

Answer 5

States there is a difference between the conditionals of groups but the nature of the difference is not specified

Question 6

Give an example of a two-tailed hypothesis

Answer 6

There will be a difference between girls who do psych and boys who dp psych

Question 7

When would you use a two tailed hypothesis

Answer 7

• when there is no research published to support your aim

Question 8

What is a null hypothesis?

Answer 8

What you’re going to assume is true during the study - any data you collect will either back this assumption or not

Question 9

Give an example of a null hypothesis

Answer 9

• If data doesn’t support your null hypothesis - you reject it and go with alternative hypothesis
• There will be no differences between the variables e.g. there is no difference in memory between eating chocolate and not eating chocolate