@article{ref1,
title="Driving simulator experiments: power for repeated measures vs. completely randomized design",
journal="Proceedings of the Human Factors and Ergonomic Society annual meeting",
year="2006",
author="Donmez, Birsen and Boyle, Linda Ng and Lee, John D.",
volume="50",
number="21",
pages="2336-2339",
abstract="Driving simulator studies are usually designed to collect repeated measures on each participant. This design has different implications for the power of within and between-subject effects that needs to be recognized by researchers. The power for between-subject variables decreases when additional measures are collected on the within-subject variables. However, the power for the main and interaction effects of the within-subjects variables increases as more observations are collected on one participant. If the main interest of the experiment is a between-subject effect, such as age, then a completely randomized design can provide the same power with fewer participants. Through a case study, this paper demonstrates how the power changes between a repeated measures design and a completely randomized design.<p /><p>Language: en</p>",
language="en",
issn="2169-5067",
doi="10.1177/154193120605002108",
url="http://dx.doi.org/10.1177/154193120605002108"
}