Dear Doug,

I would like to be sure that I've understood the rules for the following contrast in a 2x2x2 design with diagnosis (D1, D2), gender (Male, Female) and handedness (Left, Right) as discrete factors.

D1MaleLeft

D1MaleRight

D1FemaleLeft

D1FemaleRight

D2MaleLeft

D2MaleRight

D2FemaleLeft

D2FemaleRight

interaction between Diagnosis, Gender, and handedness

[ 1 -1 -1 1 -1 1 1 -1]

interaction between Gender and handedness for D1

[ 1 -1 -1 1 0 0 0 0]/2

interaction between Gender and handedness for D2

[ 0 0 0 0 -1 1 1 -1]/2

interaction between Diagnosis and handedness for Males

[ 1 -1 0 0 -1 1 0 0]/2

interaction between Diagnosis and handedness for Females

[ 0 0 1 -1 0 0 -1 1]/2

interaction between Diagnosis and Gender for Left

[ 1 0 -1 0 -1 0 1 0]/2

interaction between Diagnosis and Gender for Right

[ 0 1 0 -1 0 -1 0 1]/2

Thanks in advance,

Jose

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Jose L. Cantero, Ph.D.
Laboratory of Functional Neuroscience
Department of Physiology, Anatomy and Cell Biology
University Pablo de Olavide
Ctra. de Utrera, Km.1
41013 - Seville
- Spain -
Phone: +34 954 977433
Fax: +34 954 349151
Email: jlcanlor@upo.es
http://www.upo.es/neuroaging/en/