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AS Psychology research methods lesson 5

Experimental design

Amanda Lane

on 16 October 2017

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Transcript of AS Psychology research methods lesson 5

Doing your own experiment for schizel!
Experimental Design
Arrange yourselves into pairs
First of all we are going to conduct a mini experiment of our own....
Experimenter you will need a stopwatch in order to time the participant.
Delegate one person to be the 'experimenter' and one to be the 'participant'.
The experimenter will time how long the participant takes to CORRECTLY identify each colour (not the word!)
The participant will be given a set of words which are all printed in different colours.
The experimenter will then record the times
The experimenter will say 'START' to signal to start reading, the participant will say 'STOP' when they have finished reading.
What was the DV in this experiment?
What was the IV in this experiment?
Now answer these questions
What were the aims of the experiment?
Draw a bar graph to show the class results
Mean reading time in seconds
Conflicting list
Non conflicting list
What could you change to make it better?
Think about the experiment you have just conducted.... how would you change it so that you could do it on a larger scale?
A hypothesis states what you believe to be true. It is a precise, testable statement of the relationship between 2 variables.
What is a hypothesis?
What would the hypothesis of our experiment be?
Repeated measures design
Experimental design
Same participants in each condition
Independent groups design
Two or more groups, one for each condition
Matched Pairs design
Involves independent groups, but participants are matched with others that share similar characteristics. In this case it could be age, gender.
Specifying a set of operations or behaviour that can be measured or manipulated.
The stroop effect demonstrates the way in which the brain automatically processes information. We automatically 'READ' the words but this conflicts with the colour of the word and we become confused!
The science behind the experiment!
For example: A hypothesis is an operationalisation of the experiment aim because the wording has been changed to a testable statement.
(Variable made to change)
(Variable that is measured)
This process is called 'interference' as information conflicts with our automatic processing!
Full transcript