RESEARCH METHODS: Aims & Hypotheses Flashcards
What is an aim
A statement of a study’s purpose. Aims are stated before the research begins ti make it clear what the study intends to investigate
What is one-tailed hypotheses also known as
Directional
What is a one-tailed hypotheses (directional)
States the directions of the difference or relationship
When would we use one-tailed hypotheses (directional)
We would use this when there is already pre-existing research that supports our aim
Example of one-tailed hypotheses (directional)
People who drink Red Bull become MORE hyperactive than people who dont
key words: more/less. higher/lower. faster/slower
What is two-tailed hypotheses also known as
Non-directional
What is two-tailed hypotheses (non-directional)
States there is a difference between the conditionals or groups but the nature of the difference is not
When would we use two-tailed hypotheses (non-directional)
We would us this when there isn’t pre-existing research that supports our aim
Example of two-tailed hypotheses (non-directional)
There will be a difference is memory recall for people who eat chocolate & those who dont eat chocolate
(stating there is a difference but not specifying the direction)
What is a null hypothesis
A null hypothesis is what you’re going to assume is true during the study. We assume there is no difference in between the variables. Any data you collect will either back this assumption up or not
If the data does not support your null hypothesis, you reject it & go with your alternative hypothesis
Example of a null hypothesis
There will be no difference between eating chocolate & not eating chocolate on memory recall