Hi Jim-- This helps a lot. Thank you.
Julie On Mon, Nov 16, 2009 at 7:32 PM, Jim Clark <[email protected]> wrote: > Hi > > Assuming you mean the MANOVA routine in SPSS (not GLM, for example), use > syntax like the following to partition the interaction: > > MANOVA dep BY major(1 2) place(1 3) > /PRINT = SIGNIF(SINGLEDF) > /CONTRAST(place) = SPECIAL(1 1 1 -2 1 1 0 -1 1). > .........NOTE: if this is the contrast you want! > > The above will partition the 2 df (2-1)(3-1) interaction into single df > contrasts. > > To test the simple effects (assuming same contrast) and partition simple > effects into single df contrasts, use: > > MANOVA dep BY major(1 2) place(1 3) > /PRINT = SIGNIF(SINGLEDF) > /CONTRAST(place) = SPECIAL(1 1 1 -2 1 1 0 -1 1) > /DESIGN major place WITHIN major(1) place WITHIN major(2). > > These analyses can also be done with GLM using LMATRIX command or other > options. > > If you are using Manova in the more generic sense (i.e., multiple dependent > variables), I am less certain about how the above apply. But since, > multiple dep var Manova is often followed up by single dep var analyses, one > could repeat above for each dep var. > > Hope this helps. > > Take care > Jim > > > James M. Clark > Professor of Psychology > 204-786-9757 > 204-774-4134 Fax > [email protected] > > >>> Julie Osland <[email protected]> 16-Nov-09 3:37:54 PM >>> > Hi All-- > > I am hoping one of you can help me. Here is what I need to figure out. A > student, one of our really good students, asked if you can test for > interactions using MANOVA just like you do with ANOVA. I said "sure you > can." So now I am in a position to have to show them how and I want to be > really prepared. > > I found some data from a of study mine and ran a 2x3 Manova, no problem at > all. But I want to be really prepared to have to answer further questions. > The data has the following IVs: math major (math intensive vs. non- math > intensive) and math placement (remedial, college algebra, and advanced) and > what I want to know in the event I am asked, how to test for the simple > main > effects and Interaction Contrasts in MANOVA. > > I did this stuff years (and years ago) in ANOVA but have been separated > from > my notes and books. I've spent the better part of an hour looking at stats > books and searching SPSS help to no avail. > > Can anyone point me to a good resource regarding how to do this in SPSS? > > Thanks much, > > Julie > > -- > Dr. Julie A. Osland, M.A., Ph.D. > Assistant Professor of Psychology > Wheeling Jesuit University > 316 Washington Avenue > Wheeling, WV 26003 > > Office: (304) 243-2329 > e-mail: [email protected] > > --- > To make changes to your subscription contact: > > Bill Southerly ([email protected]) > > > --- > To make changes to your subscription contact: > > Bill Southerly ([email protected]) > -- Dr. Julie A. Osland, M.A., Ph.D. Assistant Professor of Psychology Wheeling Jesuit University 316 Washington Avenue Wheeling, WV 26003 Office: (304) 243-2329 e-mail: [email protected] --- To make changes to your subscription contact: Bill Southerly ([email protected])
