Repeated Measures Design
An example of a test using a repeated measures design to test the effects of caffeine on cognitive function. A subject's math ability might be tested once after they consume a caffeinated cup of coffee, and again when they consume a placebo.
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"All sizes | Black Coffee and Tea in White Cup is Hot | Flickr - Photo Sharing!."
http://www.flickr.com/photos/epsos/8113306742/sizes/z/in/photolist-dmWPr1-dkwVr7-bxgerw-akMJRc-7P48Bg-aSj8Yi-dt8VfU-9PN2YC-b7UCda-b7UCXX-b7UENX-b7UE5V-axJQnv-95SFMj-bkg9v3-boYUFx-bPLj3t-cXNeV5-dUYnEd-c1ANHu-atB496-bqg1DX-9Xyq2c-8DEdNh-eGsvam-aghbBV-bRSZWe-dKhgNA-bAXqNm-anVG6r-dkdARN-bUvkGi-cbf7d5-89R5w5-89yKY2-dWd1eS-dWcZzs-dWd2hh-dWd1AW-dW7oP4-92GWzU-b6enNV-8aXCMu-aNBBQK-97RHNr-8pVcKV/
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