Questions tagged [statistics]
For questions about statistical methods that might be appropriate for certain paradigms within psychology, psychiatry, neuroscience, or cognitive science.
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Why did studies find a within-person correlation between IQ and agreeableness but not between-person?
Bartels, 2012 found a correlation of 0.21 in what I understand to be within-person correlations (when one trait increased throughout life, the other did as well), however the between-person ...
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Formulation of explorative research questions checking possible moderators
I conducted an experiment, where all participants were tested for verbosity under a low and under a moderate stress situation. My primary hypothesis was "Low stress situations, compared to ...
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Am I interpreting the odd ratio incorrectly, or is the graph wrong?
I'm running an independent factoral regression analysis with a cateogrical outcome variable (in R). It's a 2x2 design with two potential outcomes - essentially 'yes' or 'no'. I also have a continuous ...
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3x2 Mixed ANOVA, but 3 DVs, one of which is a yes/no - what statistical test?
I have a research design where I have a 3x2 mixed ANOVA, focussing on attitudes towards a drug. The between participants part has 3 levels, with 2 different methods of communicating about risks of ...
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How valid are comparisons of prevalence without control group, using different studies?
Let's say we have a subgroup S of the population (e.g. inmates), and we do a prevalence study for a certain condition D (e.g. major depression) in S for which we try to diagnose D somehow.
But we don'...
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How to get a psychology research assistant position?
I am a recent postgraduate student of social psychology and I have been trying to look for RA positions without much luck. My applications are getting rejected without any feedback and I am a little ...
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answer
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Methods for comparing extracellular neural response structure to auditory stimulus structure
I have two arrays, one representing an auditory stimulus and the other representing neural activity from auditory cortex. The auditory stimulus has known temporal and spectral structure. The neural ...
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Equating between short form and long form of the same instrument
I have encountered several instruments in psychology and related fields where we have multiple versions of the same instrument, specifically a short form and a long form. For instance, the patient ...
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Best practice for comparing data between completers and non-completers?
I conducted a study which collected data on a brief one-time intervention at 3 timepoints (pre, post, and one-week follow-up). There were some participants who dropped out between these 3 timepoints. ...
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Are BDSM sexual practices correlated with or related to social-dominance orientation?
When I think about BDSM sexual practices and sexual sadism disorder, I tend to think that it sounds like something that some people with a social dominance orientation would be interested in. This ...
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Preregistration questions sample/outliers
HI I'm extremely new to research and my professor asked me to complete a preregistration for a project he wants to co author. However, I am stuck because the preregistration he asked me to complete ...
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Which statistical analysis test to perform to find the difference in connectivity between regions of Default Mode Network?
I have three groups each with 30 participants. I have 30 binary adjacency/connectivity matrix for each group which represents the connectivity between regions of Default Mode Network . I want to find ...
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Choice of statistical analysis for correlational study
Good morning,
I am writing a dissertation for my master's degree in psychology. I have to do statistical studies on data that I have collected.
I want to proceed with a correlational analysis.
...
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Other approach to factorisation
I am not sure if this is the ideal forum to ask so if someone can point me to another place that would be good.
In a lot of psychology research traditional explanatory factory analysis always seems ...
2
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How do you model signal detection in an alternative non-forced-choice task?
This question is about signal detection theory for psychology research.
Our study used a memory task where participants were given four options: A, B, C, and "I don't know". I have multiple ...
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