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MBB2
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Repeated Measures Research Design
Each participant is measured on two or more different occasions
e.g. time 1/time 2; before/after
Research question: Is there a charge across time?
Example research question:
Does treatment make a difference?
Repeated measures t-test
also known as ‘paired samples’ or ‘related samples’ t-test
Related samples t-test
Is there a significant difference between the means at time 1 (before) and at time 2 (after)?
Null hypothesis (no effect, no difference)
H0:u1=u2
or H0=u1-u2=0
Alternative hypothesis (of effect)
H1:u1-u2=/0
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