Aims and Hypothesis

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Aims
Ideas for research are from:
Direct observation of behaviour
Indirectly through background knowledge band theory
An aim is a reasonably precise idea about what you want to study and what you want to achieve.
This makes it clear whether it is realistic or not.
Doesn't need to be very detailed
Needs to state the focus clearly
e.g. to look at whether listening to music whilst revising helps us to remember things.
Hypothesis
When we have the aim, we change this into a statement called a hypothesis.
What is a hypothesis?
A hypothesis predicts what we expect to find after the experiment.
e.g. The more stressed we are, the worse our memory will be.
As researchers you have to plan the study (experiment) and then carry it out.
The result of our study will either support our hypothesis or it won't. If the results don't support the
hypothesis then you have to reject it and think again.
Types of Hypothesis
Experimental Hypothesis:
This hypothesis predicts what will happen in the study.
Often written as H1
Alternative Hypothesis:
Used when we are not really doing an experiment
Used when making observations of behaviours or collecting opinions
Often written as HA.

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Null hypothesis:
predicts that what we find in our research just happened by chance
Opposite of the main hypothesis
Written as Ho
Null Hypothesis
It must be included in research because psychologists can never rule out the possibility of results
gained in the investigation are due to chance.
So if the hypothesis Is not supported by the research then the null hypothesis is probably true.…read more

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Non-Directional Hypothesis
Eating potatoes for dinner alters the amount you sleep.
This hypothesis does not predict a direction, it doesn't predict whether sleep will increase or
decrease.
· Either can happen
· This is also known as a two tailed hypothesis
· Non directional may be used if the researcher isn't clear about what will happen.
· If you know there will be an out come but not sure which one needs to be used.…read more

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Alternative Hypothesis:
Used when we are not really doing an experiment
Used when making observations of behaviours or collecting opinions
Often written as HA.…read more

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