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Here's my problem.

--ONLY One group--

All fill-out pre-test. All participants given intervention. Complete a post-test. Return in 2-weeks to complete another post-test to determine if intervention effects sustained.

My question is whether intervention has an effect (which in comparing pre- and post-test, leads me to believe I can use paired sample t-test) But having the 2-week post-test, does this mean that I will be using repeated measures ANOVA? I haven't had research in a while, and was looking around online and getting frustrated.

Any help would be appreciated.

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Repeated measures ANOVA is to be used when the same subjects are used for each treatment. On the other hand, One-way ANOVA is used to test for differences among two or more independent groups (means). In the case that you mention, Repeated measures ANOVA would be more appropriate.

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