repeated-measures

  1. Y

    Average of standard deviation as repeat accuracy for five measurement series

    Hi there, I hope you can help me with the following question. I measured the power input and output of a storage and retrieval vehicle with 1,000 single measuring points. I repeated the measurement five times with the same measure method and same time steps. The result is five measurement series...
  2. R

    Using repeated measures change/trend as a predictor variable

    I have repeated measures of happiness for a sample of participants, and a single measure of satisfaction for each of the participants. I want to predict satisfaction from the repeated measures of happiness. To do so, I want to create a new variable, called happiness.change, which measures the...
  3. S

    which test for repeated measures within-between group change with small sample size?

    Hi all, I have an intervention study with a very small sample size and am trying to decide the best way to analyze it. Any suggestions would be extremely helpful. Here is some more information: Measurements on 5 different variables were taken at 3 time points: Baseline, Follow-up 1...
  4. S

    repeated measure ancova

    Hi, I do have a rather simple question but could not find a direct answer on other forums. I ran a repeated measures ancova with time (2) as within-subjects factor on accuracy rates (so that one was measurd twice) and entered age as the covariate. in the between-subjects table the...
  5. L

    Mixed model with time-varying covariate - are correlations between covariates bad?

    Hi everyone, I have a question regarding the correlation between predictors in a model, and whether I should worry about it in my specific case. Any help would be great. Here are the details: I am interested in the effect of within-subjects treatment Z (two levels) on my dependent variable...
  6. K

    Repeated-Measures for men and women viewing opposite sex visual stimuli?

    In advance, thank you for any insight you can provide on the following. My study: Men and women viewing different (opposite sex) stimuli (2 levels) and description (2 levels) Men and women presented with same contextual scenarios (2 levels) before viewing stimuli 2 x DVs I...
  7. S

    SPSS Repeated-Measures GLM: Polynomial but only linear contrasts

    Could you please let me know of a way to also get quadratic trend results displayed? See syntax and relevant output below. Thank you!!! ----------------------------------------------------------------- GLM fsy fwy fsn fwn BY gr /WSFACTOR=decision 2 Polynomial strength 2 Polynomial...
  8. S

    measuring correlation over time between two variables

    Hi, For my study, I will administer the same questionnaire 3 different times: the beginning, middle, and the end of the semester. I am interested in examining the correlation among several variables, let's say student engagement and teacher support. For each questionnaire, I can do...
  9. R

    Differing p values on rep-measures ANOVA: Sphericity Assumed vs Multivar test

    I've run a 2x3x2 repeated measures ANOVA on SPSS. This brings an output with two tables that show you p values for the main effects and interactions. The first is called 'Multivariate Tests'. This gives 4 p-values for each contrast, however as I only run univariate analyses these 4 values...
  10. S

    HLM vs. SPSS GLM repeated-measures

    HLM 7.0 - Different p-values in HLM vs. SPSS GLM Repeated-measures My model is a 4-way interaction between 3 dichotomous dummy variables and a continuous variable, with 2 dummy variables at Level 1 (within-Ss) and 1 dummy and the continuous variable at Level 2 (between-Ss). I'm looking for...
  11. T

    Should I use one-way repeated measures ANOVA here?

    Hi, this is my experiment: n users will use 4 different user interfaces (A-D) for exploring the content of a web site. I will systematically permute the order in which they use the different interfaces. After using an interface, a user has to fill out a questionnaire...
  12. R

    2-Way Factorial, Non-Parametric, Repeated Measures test.

    Hi I've got data from a 2x2 fully factorial, repeated measures design. The residuals are non-normal so I am looking for non-parametric equivalent of the 2-way repeated measures ANOVA. I know there isn't one available from the SPSS menus, but has anyone got any SPSS syntax that can perform this...
  13. R

    Implementing non-parametric version of 2x2 Repeated Measures ANOVA in R

    Hi, I have a 2x2 repeated measures design (i.e. 1 group of participants provide data for all 4 conditions in a fully factorial counterbalanced design [so there is no time factor to worry about]). The data is non-normal so I need to use a non-parametric equivalent of the 2x2 factorial ANOVA...