A researcher is interested in studying the effects of video games on quality of sleep. To study this, she brings 100 participants into the lab and has them play video games for 2 hours, they then go home and sleep. The following day, they come into the lab and report on their quality of sleep from the previous night. One week later, the same 100 participants come into the lab and play video games for 4 hours, they then go home and sleep. The following day they come into the lab and report on their quality of sleep from the previous night.

What kind of test should the researcher run to answer the question of whether there is an effect of video games on quality of sleep?

1. Independent Samples T-Test

2. Repeated measures ANOVA

3. Paired samples T-test

4. ANOVA

5. Correlation