Recent content by AlexanderC

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    3 way ANOVA following it up

    This is quite simple question but im more simple :p I have DV and 3 IVs, each 2 levs. Making up example, lets say they are: DV=performance%, IV1=trial type (seeing, hearing) IV2=item type (target, distractor) IV3=confidence (high, low) Subjected to a 2x2x2 RM ANOVA in SPSS and i see no 3 way...
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    formula for factorial ANOVA interaction effect

    Good day. I have a question regarding the formula for calculating interaction effects. In Andy Field book he gives: SSa×b = SSmodel − SSa − SSb, where a and b are the different factors in our model. What happens when we have 3 or more factors? Is this then: SSa×b×c = SSmodel - SSa - SSb - SSc...
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    p values, alpha, and errors

    Thank you all for discussion, it has been very helpful!
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    p values, alpha, and errors

    I mistyped this, it should be as quoted now. By "doesn't exceed" I meant p < .05. I think it's beginning to make sense. The p value is a probability of obtaining result of at least the detected size, given that the null is true. It doesn't say anything about error because there is not yet an...
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    Good day

    I don't really know how to describe the context for signal detection, other than applying signal detection models to data collected in psychology experiments, and using SDT to better understand human perception for example. Of course it would be useful to learn how this is applied in other...
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    Good day

    I know the feeling, I always feel like I have so much to learn in so little time :D It is a healthy pursuit at least. Frequentist statistics are used most frequently ( :cool: )in my field of study, so it is my main goal to learn as much of this as I can. If I can do this it would be nice to...
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    p values, alpha, and errors

    Hmm I think it's starting to clear up, but I'm still uncertain about some things. So if we had p=.04 for example, then would we state that there is 96% chance that if you replicated the study you would observe an effect of at least this? OR in other words (for simplicity), if we ran the study...
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    Good day

    Hi talkstats memebers! I am Alex. I study Psychology and I want to learn as much as I can about statistics.
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    p values, alpha, and errors

    I was speaking with a classmate about subject heading for this thread and it made me a bit confused. Here are my thoughts: the way I explain p value: probability of observing effect when, in reality, there is no effect. This translates to probability of data given the null (null=there is no...