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For questions about the application of specific experimental methods to study psychology.

4
votes
Scientific perspective From a design perspective, it would not be difficult to set out a design where participants did not know each other or did not know each other well enough to deduce that the in …
answered Feb 1 '14 by Jeromy Anglim
8
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I think it's a basic concept of experimental design that you have control groups. So for example, if you want to study the effect of X (e.g., a drug) on Y (e.g., performance), you could manipulate X ( …
answered Dec 11 '13 by Jeromy Anglim
1
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It sounds like you are talking about random allocation of participants to groups for the purpose of running a between-subjects experiment. You can learn more by reading about randomized controlled …
answered May 21 '14 by Jeromy Anglim
3
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People use a wide range of language to describe measurement points in repeated measures design. For example if you measured some dependent variable on multiple occasions you might have something like …
answered Jul 11 '14 by Jeromy Anglim
5
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Your question potentially raises philosophical questions, but for it to have meaning, there are several definitional issues. What is a psychological question? Presumably a psychological question is …
answered Apr 1 '13 by Jeromy Anglim
1
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There appears to be an Inquisit implementation of the dot probe task that will run both online and in a lab. Such scripts can presumably be customised to your purposes. If you want to use this for r …
answered Jul 12 '13 by Jeromy Anglim
3
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I'm still not clear on what is your question. You ask whether psychology and medicine differ in some aspect of their methodological approach. Experiments are typically analysed using statistics to te …
answered Feb 27 '14 by Jeromy Anglim
6
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Overview: It seems like quite a bit of research has been conducted with experience sampling methodologies looking at daily variations in mood and activity. It is an interesting question as to how best …
answered Oct 11 '12 by Jeromy Anglim
3
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Normally, I'd recommend using the same mood measure pre and post manipulation. This allows you to assess the size and direction of change. It also likely removes more error variance from the post-test …
answered May 25 '14 by Jeromy Anglim
2
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You will probably need to do pilot testing to ascertain the difficulty of a given correlational task. From pilot testing, you would need to quantify the difficulty of the task. One option would be t …
answered Oct 24 '16 by Jeromy Anglim
2
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I think a good option would be to use a general purpose language. For example, I once used Visual Basic to program a task that allowed for dragging elements around a display. The IDE for Visual Studio …
answered Sep 11 '13 by Jeromy Anglim
3
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Without knowing more, I imagine you could do a 3 x 3 mixed ANOVA with three levels to the within subjects factor "dimension" three levels to the between subjects factor "group". This is all predicated …
answered May 27 '13 by Jeromy Anglim
2
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Qualtrics (survey software) and Inquisit (more sophisticated stimulus presentation software) both run online. Both tools support counterbalancing. Inquisit has extensive support for both randomisation …
answered Dec 4 '17 by Jeromy Anglim
11
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I've studied this a little bit within the context of timing responses to personality test items. General models of reading speed look at both the time to read the words as well as to comprehend. From …
answered Jun 16 '12 by Jeromy Anglim
3
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It depends on what you mean by manipulation check. Manipulation check to filter participants: A manipulation check is usually done to verify that some experimental manipulation has had some prelimina …
answered Aug 6 '15 by Jeromy Anglim

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