All Questions
Tagged with statistics cognitive-psychology
17
questions
2
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0
answers
38
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Combining Data from Multiple Participants for Statistical Analysis in a Facial Expression Memory Task
I am working on a project involving a memory task for facial expressions, consisting of two phases:
Encoding Phase: There are 8 trials in which participants view 8 different virtual characters, each ...
0
votes
0
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50
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What kind of statistical analysis is suitable for this simple but unresearched data?
The data is regarding the perceived roundedness of given word stimuli (n=36). Each participant (n=44) rates each stimuli on two scales, roundedness & familiarity (both from 1-7 not round (sharp)/...
- 101
3
votes
0
answers
97
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Do different ethnic groups have the same standard deviation of the IQ distribution?
There is a lot of research suggesting that different ethnic groups either within US or worldwide if all plotted together would have distributions of IQ with different averages. The reasons for that ...
- 31
0
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0
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66
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What is the Reason Behind This Individuals Variability in Raven's 2 Clinical Edition Scores? [duplicate]
The Raven's 2 Clinical Edition developed by Pearson features an item bank comprised of questions numbering in the hundreds.
Because of this each test differs from the other with possible combinations ...
- 21
1
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0
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1k
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How do I complete and report a Generalised Linear Mixed model from SPSS into APA?
I'm trying to learn how to do GLMM for my phd in psychology. I was intending to do a mixed model ANOVA, but the GLMM allows me to consider more variables simultaneously and so I have decided to go ...
4
votes
0
answers
368
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Calculating Significantly Above Chance for 3-AFC Test
I am trying to figure out which participants who took a 18-item multiple choice test scored significantly above chance. Each item has 3 choices, so the probability of getting each question correct is ...
2
votes
1
answer
37
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How to assess the effect of individual difference measure on quadratic fit of a within-subject factor?
In my task, there are 8 levels of a within-subjects/repeated measure factor. The overall relationship that this factor has with the DV is in the shape of an inverted-U, such that their DV scores at ...
1
vote
0
answers
37
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Averaging a linear or nonlinear function treatment
In a hypothetical PET study, my sample consists of a clinical population which exhibit brain hypermetabolism. I divide my sample into two homogenous groups. One receives a treatment whereas the other ...
- 121
2
votes
1
answer
468
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Can people act randomly? [duplicate]
Let's imagine an experiment. We will tell N normal people that they need to act randomly in the Rock–paper–scissors game (in this game Game Optimal Strategy is to choose an action with uniform ...
- 121
2
votes
2
answers
121
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Examples of interventions that yield large long term effect sizes in psychology
I was listening to a podcast entitled Very Bad Wizards, hosted by two university academics. One of the hosts, namely David Pizarro who is a psychologist at Cornell made the claim that most ...
- 71
3
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23
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How do I get calculate D1 and d1 in a multinomial processing tree model?
I've just been reading this paper and I am currently conducting an experiment for my undergraduate thesis. The experiment involves reality monitoring source memory judgments and I therefore want to ...
- 31
0
votes
1
answer
106
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Which is a better statistical option to compare differences across groups?
I have two groups (13 experimental and 13 control participants) performing on two cognitive tasks. I have accuracy (omissions, commissions) and reaction time measurement from each test for each person....
- 1
2
votes
2
answers
470
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cleanIAT function in R IAT package
Has anyone used cleanIAT (function in IAT package) to compute D-scores for their IAT data? Have you noticed any discrepancies between your D-scores and those of colleagues that used another program (e....
6
votes
0
answers
990
views
What to do when you have a speed-accuracy trade-off in your data?
Many studies report that a speed-accuracy trade-off (SATO) did not occur in the data since there is a positive correlation between RTs and error rates. In other words, people took longer to respond ...
- 919
3
votes
2
answers
211
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Statistics books for educational psychologists?
I plan to study educational psychology in the near future. I know research methods is a big thing for educational psychologists, so I wanted to get a firm grip on the statistical knowledge required ...
- 33