repeated measures anova

1. Post hoc power analysis

Hi, I need to do a power analysis in G*power for my study. My research is part of a larger study for which the data is already collected, so my sample size is predetermined for me. I don't have access to the actual data yet. (note: I will be looking at a patient group and a control group...
2. Repeated measures ANOVA trend analysis is confusing me

I'm trying to understand how trend analysis works with respect to repeated measures ANOVA, but I'm a bit confused and have some questions. My first question at the bottom of this post is the thing I'm most interested in. I'm using SPSS, but it is unclear what is going on with the outputs and the...
3. Interpreting Repeated Measures Anova Results in R

I just finished conducting a repeated measures anova looking at mean sand grain sizes over time over a 13 year period for seven sites. Each year a sand sample was collected from a different section of the beach for each site: Ex: Sand samples are collected from the foreshore, midshore...
4. Interaction in simple Repeated Measures Anova

Dear all, I am currently struggling with my masters-thesis on the subject of control variables or covariates in a repeated measures analysis. I have a rather strait-forward 2x2 data-matrix: 2 dichotomous independent variables. (I will call them condition & treatment) 1 dependent...

Hi all, New user & first time poster. I'm finalizing my dissertation and am searching for similar examples as my project or some way to justify one of our analyses. (I'm also open to better analysis ideas for possible publication later on if anyone has suggestions). I'll try to keep my...
6. Repeated Measures ANOVA as Linear Mixed Model

Hi there, I have a study in which one group of subjects are completing a face recognition task with an eye tracker. First, they learn a set of faces, one at a time. In the testing phase they are tested on their memory for those faces, one at a time, with some faces being targets and others...
7. [ANOVA - Repeated Measures] When to include subject as a random effect?

I have an eye tracking study in which two groups of subjects (patient and control) are completing a face recognition task in which they learn a set of faces and then are shown faces one at a time and have to decide if each face is one that they learned earlier. During the task, we are recording...
8. Repeated Measures Anova question

Thanks so much for taking a minute to read this! I am planning a dissertation and IF could get some feedback as to if I am on the right track, that would be great! I am planning on conducting a study that compares the effect of student type (ELL, students with LD and typical students) on...
9. What ANOVA fits best?

Dear all, can anyone please advice me which ANOVA is the most suitable: An athlete has perfromed multiple runs at constant speed with three different shoes. The kinematic data was analysed for different number of cycles per shoe condition. I want to compare mean cycle times between different...
10. Repeated measures ANOVA on correlation coefficients

The purpose of the study is to examine a gradual linear decay in an EEG signal over a period of time. I measured the average signal over 20 bins of 50ms each and correlated it with sequential time points, to get negative r Pearson, which would reflect the decay. I have a 2X2 mixed model (one...
11. What follow-up tests for 3-way repeated measures ANOVA with no 3-way interaction?

For a three-way repeated measures ANOVA: Do I use simple main effects syntax or just run t-tests in SPSS in my follow up analyses (pairwise comparisons?) for a non-significant three-way interaction, with 1 significant 2-way, and 3 significant main effects? I'm interested not just in the...
12. 1-way vs 2-way repeated measures ANOVA with missing data

I have performed an experiment where I tested how long it took users to reach various points on table and their perception of how difficult the task was to perform under various conditions. The user used either a handheld robot arm, or a handheld wand to reach the required points. In addition...
13. Dealing with Score Dependency in Repeated Measures ANOVA

I am writing a report for my company looking at the impact of a relationship education curriculum on participants. Prior to the class, immediately after the class, and 30 days after the class, participants completed surveys on their relationship satisfaction, communication skills, and...

Dear all, I am working on this for a couple of weeks now and found several guides and examples on both of the methods above, but no example really fits my topic. I tried both of them and lots more with my data but just dont know, which procedure produces the RIGHT results.... I have 90...
15. 2 x 3 (Repeated Measures?) ANOVA

Hi guys! I would be very grateful if someone could just doublecheck my choice of data analysis. This is for a dissertation, and I do not have the possibility to check this with my supervisor right now. So here's the deal: Basically, the study looks at the influence that subliminal...
16. Repeated measures ANOVA; missing data and multiple measures at each time point

Hi TalkStats I have data from a project. The data is the blood pressure for each participant at day of "baseline" visit, and 3 time points after baseline visit. Index these baseline and post-baseline time points j=0,1,2,3. For the ith participant, at time point j, we have measurement...
17. repeated measure ANOVA, are comparisons at different time points independent?

Hi, i have been set the task to critically analyse a research paper > http://wageningenacademic.metapress.com/content/5065134j5v339382/fulltext.pdf but have no background in statistical analysis, i have found some lecture notes that are helpful but am uncertain about the following issue...
18. paired sample t-test vs. repeated measures ANOVA

I think that the Psychology Research forum is more appropriate so I moved my question there--I could not figure out how to delete this thread. Thank you for having a look!
19. Determining sample size in a factorial repeated measures ANOVA using GPower

Hi all Can anybody tell me which F-test option in G power 3.1.9.2 is appropriate to find out the sample size for a 2x2x2 repeated measures ANOVA? The three within subjects factors are A, B & C. I am interested in finding out how many subjects I will require to find a main effect of A...
20. Paired Sample t-tests do not link up with the Repeated-Measures ANOVA

Hello, I'm currently writing up my results section for my dissertation that's looking at the nocebo effect. I'm using a repeated-measures ANOVA that has three factors each with two levels, synchronicity (synchronous vs. asynchronous), phase (pre-conditioning vs. post-conditioning), and...