mixed model

  1. P

    Explanation of Random Intercept and Slope in Longitudinal Research

    Could you explain the concepts of random intercept and random slope in terms of longitudinal research?
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    Help converting R script to SPSS, LMM?

    Hi, Im wondering how to "convert" this R script into SPSS (v.21): lmer(formula = GSR2 ~ Condition + Insecurity + gender + (1 | ID:Condition) + (0 + Trial | ID:Condition) + (0 + Trial | ID) + Condition:Insecurity + Insecurity:gender, What im wondering is how you redo the script above as...