ERIC Number: ED157710
Record Type: RIE
Publication Date: 1978-Jun
Design, Analysis, and Interpretation of Screening Studies for Human Factors Engineering Research. Revised Edition.
Simon, Charles W.
Methods are described for constructing Resolution IV Screening designs that are robust to linear, quadratic, and cubic trend effects and will also keep the number of factor-level changes for some variables at a minimum. Complete designs, capable of screening up to 32 variables, are provided along with appropriate methods of analysis. Numerous criteria for selecting non-trivial variables are discussed, including: mean difference, eta squared, cumulative probability, and half-normal plots. How to handle subjects in an experiment is described when their characteristics can be included as experimental factors and when they cannot be, and when subjects are merely a form of replication. The values of introducing multiple center points into screening designs are discussed. Lack-of-fit tests are provided to help decide whether a second- or third-order response surface is needed. Numerous methods of analyzing screening studies with multiple responses are described. A method is given for developing a prediction equation with data collected from an incomplete screening design. (Author/HM)
Publication Type: Reports - Research
Education Level: N/A
Sponsor: Air Force Office of Scientific Research, Washington, DC.
Authoring Institution: Canyon Research Group, Inc., Westlake Village, CA.
Note: Update to ED 150 005; Contains marginal legibility in Appendices; Pages 194 and 198 removed due to oversize and marginal legibility