G541 1

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  • Created on: 22-05-12 10:53

Psychology G541


The independent variable is the variable in which the experimenter manipulates

The dependent variable is the variable that will change depending upon the independent variable and is measured by the experimenter


All experiments are testing a hypothesis.

A hypothesis is a statement which specifies what is going to be tested and how.

The experimental hypothesis predicts the effect of the independent variable on the dependent variable.

In order to test the hypothesis it needs to be operationalised, this means it will show how the variables will be tested.

The null hypothesis states there will be no effect, it tells you what you do not believe will happen. It starts with ‘there will be no significant difference.’

The two types of hypothesis are both one and two tailed. A one tailed hypothesis predicts the direction in which the results are expected to occur.

A two tailed hypothesis states that there will be a difference between two events but does not state the direction.


Reliability refers to whether a measurement device is consistent. This means that is the study was repeated similar results could be produced.

Internal reliability is whether the procedure is the same within the experiment, this refers


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