How to Use SPSS-Factorial ANOVA with Simple Effects Analysis
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- Опубликовано: 15 июл 2024
- How to determine the levels of the independent variable at which a significant interaction may be occuring. This is done after a factorial ANOVA in which a signifcant interaction effect was found.
Syntax for simple effects analysis (insert variable names as demonstrated in video):
GLM fost3 by sex group
/EMMEANS = TABLES(sex*group) COMPARE(sex).
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Why can't you show us the steps which you got the summary results tables?
Thank you! Worked like a charm!
Glad to hear that!
Hey, thank you for the helpful video! Is there a way to also get the effect sizes?
Got two questions if I may:
(1) Does it matter which method to use for simple effects analysis? There is the MANOVA /design commands, and your GLM or UNIANOVA;
(2) If I wish to analyse a 2x2 simple effects with a covariate as a third IV, would the syntax just add a 'with IV3) at the end of the GLM/UNIANOVA code?
Thanks.
nice
It gives different F and significance values when simple effects analysis is done way. Split file command option also gives the same results. But the syntax given by Andy Field (2013) gives different F and p values which are more conservative than the ones obtained through the above procedure. Can you help me understand the reasons for this discrepancy? Here's Andy's code for reference where IV-1 and IV-2 to be replaced with variable names:
MANOVA
Attractiveness BY IV-1 (0 1) IV-2 (1 3)
/DESIGN = IV-1 WITHIN IV-2(1) IV-1 WITHIN IV-2 (2) IV-1 WITHIN IV-3 (3)
what is exactly fost3
What if I have a within subject variable (Question, with 11 conditions) and a between subject variable (stimulation, with 3 conditions).
In the syntax instructions, you will have to indicate which interactions you want to assess and then by which variable you want to compare the groups (typically the between subject variable).
I tried to use your formula to investigate my interaction. A warming just keep bumping up. Can you help me?What this mean?
What I put in is
How can I upload the snipping picture of my analysis to you! !!!!!!
Minly L Warming as following:
"The symbol Flavorlevel was found following the TABLES keyword in the EMMEANS subcommand. A factor name was expected.Execution of this command stops."
What this mean?
BTW, I have another question. If there is no Sig. different, could I still run this analysis just for testing the Sig?
Be sure the correct names of your variables are entered into the syntax.
If there was not a significant interaction in the initial analysis, then performing this technique is not needed.
Minly L It means that you did not include the name of your between subjects variable.
Thank you! I got it right this time!
sax