How Memory Works
How does age affect reaction time?
Correlational study
|Aim and Hypothesis |
|Previous research suggests that reaction time is reduced as we get older. Your task is to use 20 participants to investigate the relationship|
|between age and reaction times. How you choose to operationalize ‘reaction time’ is up to you. Your responses in this booklet need to be of |
|good quality as you will potentially use them to answer questions about your investigation in the Component 2 exam next summer. |
|Abstract (Brief outline of aims, procedure, findings and conclusions, to be written at the end of project) |
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|In a correlational study instead of an independent variable and dependent variable we talk about co-variables and how they will be measured. |
|The age of your participants will be one co-variable, how will you measure the other . ‘reaction time’ ? |
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|State your alternative and null hypotheses |
|Alternative |
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|Null |
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|Explain why a directional or a non-directional hypothesis has been selected |
|(usually based on previous research carried out or everyday observations made of the behaviour) |
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|Sample, design and procedures |
|What was your target population? What age range were you aiming for? Which method of sampling did you use to gain your participants? |
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|How many participants took part and who were they? What is the age range? How many males/females (no names should be included) |
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|How did you go about gaining informed consent from your participants? |
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|How did you standardize instructions given to participants and what equipment did you use? |
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|Plot your results in this space, plot each participants age and their score/time on your test of reaction time. |
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|15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 |
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|Participant age |
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|Conducting an inferential test for your correlation. |
|Decide which type of data you have? (Nominal, ordinal, interval) |
|Which is the correct statistical test to use? |
|Do you require a one-tailed or two tailed test? What was your hypothesis? |
|Use the textbook to help you rank each co-variable and calculate the difference |
|Find the observed value |
|Compare to the following critical values which are for rho at 5% level (P ................
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