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  1. K

    Estimated Means in GLMM put a group's score as sig higher, but it should be sig lower

    Resolved! In SPSS I needed to set the order of the categorical target as descending.
  2. K

    Estimated Means in GLMM put a group's score as sig higher, but it should be sig lower

    The first descriptives I gave are from an aggregated file. The cross tabs and GLMM are from a by-items file. e.g. ID Item Score 1 -- 1 -- 0 1 -- 2 -- 1 1 -- 3 -- 0 1 -- 4 -- 1 1 -- 5 -- 1 1 -- 6 -- 1 1 -- 7 -- 1 1 -- 8 -- 1 1 -- 9 -- 0 1 --...
  3. K

    Estimated Means in GLMM put a group's score as sig higher, but it should be sig lower

    I have rewritten the question with more detail.
  4. K

    Estimated Means in GLMM put a group's score as sig higher, but it should be sig lower

    Hi! I ran an experiment where participants took a test of 16 questions, yes/no (binary). They were tested at either 7-days or 28-days - two groups between subjects. Analayzed as subjects, their results for the test are higher at RI-7. RI-7: 5.5 RI-28: 3.6 t-tests confirm that this difference is...
  5. K

    GLMM: Main effect cancels interaction effect

    Thank you so much for replying!! In answer to your questions: - The interaction could make sense theoretically. It is a known cognitive interaction and pre-pubescent children's brains haven't yet developed sufficiently for this to occur. However, the difference in scores is tiny and the CIs are...
  6. K

    GLMM: Main effect cancels interaction effect

    Dear all, I am running a GLMM with a 3-way interaction. When I enter the 3rd variable of Age (young vs old) only within the 3-way intraction, it is highly significant. BUT when I also enter Age as a main effect, the interaction disappears. For clarity, when I run separate GLMMs for young and...