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  • 1.  Three-way Repeated Measures ANOVA

    Posted Thu March 10, 2022 11:11 AM
    Hi guys,

    I hope I'm posting this in the right discussion group:

    I'm running a three-way repeated measures ANOVA, with two levels within each factor. Now when I generate the output and look at the multivariate tests table, it only shows me significance for the main-effects, and not for the interaction effects. It looks like this:


    The syntax I'm using is the following: 

    GLM WST_Trial_111 WST_Trial_112 WST_Trial_121 WST_Trial_122 WST_Trial_211 WST_Trial_212
    WST_Trial_221 WST_Trial_222
    /WSFACTOR=Valence 2 Simple(1) Position 2 Simple(1) Congruency 2 Simple(1)
    /METHOD=SSTYPE(3)
    /PLOT=PROFILE(Valence*Position Valence*Position*Congruency Valence*Congruency
    Position*Congruency) TYPE=LINE ERRORBAR=NO MEANREFERENCE=NO YAXIS=AUTO
    /EMMEANS=TABLES(OVERALL)
    /EMMEANS=TABLES(Valence) COMPARE ADJ(BONFERRONI)
    /EMMEANS=TABLES(Position) COMPARE ADJ(BONFERRONI)
    /EMMEANS=TABLES(Valence*Position) COMPARE(Valence) ADJ(BONFERRONI)
    /EMMEANS=TABLES(Valence*Position) COMPARE(Position) ADJ(BONFERRONI)
    /EMMEANS=TABLES(Valence*Congruency) COMPARE(Valence) ADJ(BONFERRONI)
    /EMMEANS=TABLES(Valence*Congruency) COMPARE(Congruency) ADJ(BONFERRONI)
    /EMMEANS=TABLES(Position*Congruency) COMPARE(Position) ADJ(BONFERRONI)
    /EMMEANS=TABLES(Position*Congruency) COMPARE(Congruency) ADJ(BONFERRONI)
    /EMMEANS=TABLES(Valence*Position*Congruency) COMPARE(Valence) ADJ(BONFERRONI)
    /EMMEANS=TABLES(Valence*Position*Congruency) COMPARE(Position) ADJ(BONFERRONI)
    /EMMEANS=TABLES(Valence*Position*Congruency) COMPARE(Congruency) ADJ(BONFERRONI)
    /PRINT=DESCRIPTIVE ETASQ
    /CRITERIA=ALPHA(.05)
    /WSDESIGN=Valence Position Congruency Valence*Position Valence*Congruency Position*Congruency
    Valence*Position*Congruency.

    I hope someone can tell me what I'm doing wrong here, because I can't seem to find any information about it.
    Any help would be greatly appreciated.

    Thanks in advance!


    ------------------------------
    Anthony Klee
    ------------------------------

    #SPSSStatistics


  • 2.  RE: Three-way Repeated Measures ANOVA

    Posted Thu March 10, 2022 11:43 AM
    I created some random data and ran:

    GLM v1 v2 v3 v4 v5 v6 v7 v8
    /WSFACTOR=time1 2 Simple(1) time2 2 Simple(1) time3 2 Simple(1)
    /METHOD=SSTYPE(3)
    /CRITERIA=ALPHA(.05)
    /PRINT DESCRIPTIVE ETASQ
    /WSDESIGN=time1 time2 time3 time1*time2 time1*time3 time2*time3
    time1*time2*time3.

    The resulting multivariate table was complete. This is somehow data-dependent; without looking at the data, I can't tell any more.

    ------------------------------
    Rick Marcantonio
    Quality Assurance
    IBM
    ------------------------------



  • 3.  RE: Three-way Repeated Measures ANOVA

    Posted Thu March 10, 2022 11:57 AM
    Hi Rick, 

    Thank you for replying.

    You are right, I found the problem just now, I took the mean of the wrong variables.

    Thank you again!

    ------------------------------
    Anthony Klee
    ------------------------------