Questions tagged [data]

For questions about working with or obtaining specific data sets.

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Complete digital copy of a brain: What are the main data metrics?

For the field of a theoretical scenario, future scientists map the body of an arthropod which has about 100,000 neurons and duplicate a precise copy of the animal onto SSD, including the dendrite ...
1 vote
1 answer
163 views

Reporting d-prime results

I am currently working on research analysing yes/no responses in a recognition memory task. The false alarm rate is quite high so I have performed a d-prime test and collected d-prime values. Now that ...
0 votes
0 answers
12 views

How do you analyze temporal order judgments in the traditional way?

I'm looking at analyzing the just noticeable differences (JNDs) in temporal order judgment (TOJ) studies. A modern way to do this is with a multilevel model. And, I am going to do that. But I also ...
14 votes
5 answers
5k views

Which R packages have good collections of psychology datasets?

The open source statistical software R has a range of contributed packages. Some of them include datasets. I teach research methods in psychology and I'm looking for interesting real-world dataset ...
0 votes
1 answer
33 views

What is the best method for identifying single participants in EMA studies?

I am currently working on an ecological momentary assessment research project. I can't seem to find a clear answer in literature review to this question. My problem is when observations reach to ...
4 votes
1 answer
437 views

How to fit averaged data to obtain a single psychometric function?

I have psycho-physical data from a motion discrimination task in order to obtain PSE (point of subjective equality). I am using psignifit and have constructed individual psychometric logistic ...
1 vote
0 answers
37 views

Connectome Datasets Related to Consciousness

I am a mathematics student currently looking for connectome datasets specifically related to consciousness research. I have mainly looked at the following sites: https://neurodata.io/ https://db....
1 vote
1 answer
229 views

Brain network datasets

I am a student from Computer Science and interested in graph theory. I was looking for datasets for brain networks (structural and functional) for graph analysis. I have found brain image datasets ...
11 votes
3 answers
5k views

What tools are available for EEG analysis on the R platform?

I'm starting some EEG studies on attention, and would really like to use R for preprocessing (filtering/artifact rejection), visualization, and analysis, but I can find very little in the way of tools....
12 votes
2 answers
561 views

Fitting a psychometric function when data does not lend itself to a sigmoidal fit

I'm fitting a psychometric function to a range of data. The majority of this data lends itself to a sigmoidal fit (i.e. participants can do the task), but some individuals are absolutely unable to do ...
2 votes
1 answer
143 views

Length of questionnaire for long-string analysis

I have a dataset that I am trying to screen for careless responding. I am having a little trouble finding research on what is the minimum length that a questionnaire needs to be in order to do long ...
1 vote
0 answers
17 views

Are there any sources on how many of patients with mental illness were hospitalized several times?

I was wondering how likely it is for someone with an mental illness like depression that after he is released is hospitalized again. Could you expect that someone who is released is never in the need ...
0 votes
0 answers
20 views

Need for Cognition - Distribution in Population

Is there any data on distribution of various levels of need for cognition (like intelligence, that from my understanding is said to follow the normal distribution)? Specifically, I'm interested in ...
3 votes
1 answer
60 views

Source of data for US suicides (by month or quarter) 2019 vs. 2020

In attempt to answer the question: " Have US suicides increased in March/April 2020 compared to 2019 ?". I've been unable to find any published US data for either 2019 or 2020. Does anyone know of ...
1 vote
2 answers
29 views

How to confirm that a more frequently labelled object is a better instance of the label

I have some data from a study where humans are shown an object and asked to select all words from a list that apply to the object. What I am trying to do is use the data to confirm that a particular ...
2 votes
1 answer
45 views

Where to find patient responses on Rorschach's Inkblot test?

I am looking to find data that has patient's responses to Rorschach's inblots as well and their associated diagnosis ( Mainly looking into patients that have been diagnosed with schizophrenia, ...
3 votes
2 answers
53 views

What is the name of the survey question style that forces a choice between non-opposite pairs of items, and why is it used?

I've seen personality tests and industrial / organizational psychology tests that force one to choose between non-opposing concepts. What is the name of this question style, and what are the reasons ...
3 votes
1 answer
230 views

Unable to run AxoGraph v1.7.6 on macOS 10.15 Catalina

After a recent MacOS update, I am no longer able to run the (latest) AxoGraph software for electrophysiology data analysis on my computer, as I get the following error message: ...
1 vote
0 answers
17 views

What to consider when subsampling

I have a dataset of 364 people in a control group population and about 450 in one comparison group sample and 150 in another comparison group population. We're doing a full analysis of these data. We'...
10 votes
1 answer
5k views

Open-source software for analyzing Electrodermal activity

Electrodermal activity (EDA) is a measure of the sympathetic activity, typically caused by stress or an emotional state. Analysis not a straightforward process like analysing reaction times. It ...
1 vote
1 answer
377 views

Research on Distribution of Enneagram Types in a Given Profession

I was in a conversation with an Enneagram scholar who claimed that certain Enneagram types are more likely to hold certain specific positions or have certain professions. Is there any data or has ...
1 vote
3 answers
148 views

EEG analysis free software?

I'm looking for free software for EEG data processing. What free or opensource software packages are available for analyzing raw EEG data?
1 vote
2 answers
164 views

Using the median for non parametric (Likert) data, when it gives you a decimal place

My colleague and I are working with non-parametric Likert data. We have been taking the median, but just realised that we are still getting values of say 2.5 or 1.5. Our justification for using the ...
0 votes
0 answers
26 views

Reporting results of a Mann Whitney U test when the medians are equal

In the APA guidelines of reporting non-parametric tests they suggest reporting the median results when using non-parametric tests (http://evc-cit.info/psych018/Reporting_Statistics.pdf - search for '...
3 votes
2 answers
150 views

Is there a list of large-scale, free datasets with psychological variables?

Psychologists are not using large, existing, free data to its potential. We don't know what exists, what it contains, or how to use it without a huge investment. Secondary analysis of large, open ...
1 vote
0 answers
44 views

Help understanding and visualizing the data from EEG grasp dataset from kaggle

So, I downloaded the EEG grasp data set from kaggle. I am having a hard time understanding the data and plotting it. I extracted the " first subjects' " csv files from the train folder which consists ...
1 vote
1 answer
22 views

What type of data can we get from fMRI to calculate correlations?

Lets say we want to compare the correlation between the activation one part of the brain and rise in value of other variable. The design would be within subjects. What is the data that we can receive ...
1 vote
0 answers
36 views

Data Cleaning - Stroop Test: Trying to find a paper than cleans the stroop test for individual questions

I am looking for papers that did data cleaning on stroop test results in terms of individual questions. For example, for an individual stroop test Q, remove results that took less than 200ms and more ...
2 votes
1 answer
55 views

Open data for behavioral psychology experiment?

I have a model I'd like to compare to the Drift Diffusion model, which is commonly used to model response times and error rates in two-alternative forced-choice tasks. Lots of publications use the ...
4 votes
0 answers
23 views

Where can I find the text of past DSM versions to visualize revision history?

I'm interested in building a data visualization to learn more about the history of the DSM. (I'm inspired by this visualization of the edit history of Darwin's "Origin of Species" by Ben Fry, as well ...
1 vote
0 answers
29 views

Where can I find Data set for Machine Learning purposes?

I am currently doing a research in the attempt to detect onset sign of mental disorders through facial recognition. In order to do that, I would need training dataset which contains 1. Pictures 2. ...
2 votes
1 answer
304 views

How do I choose the correct sigma when applying a Gaussian filter to a fixation density map?

I am currently analysing some eye tracking data which I recorded in the lab. For my fixation density maps I calculate tables showing the number of times participants made a fixation at a specific ...
2 votes
1 answer
70 views

Study on the learning of programming concepts in pre-university students

I want to investigate the ability of a group of students to learn programming concepts in one hour. The students are grouped by ages: 6 - 17. The tasks are divided into concept and type. Each concept ...
4 votes
1 answer
318 views

How to ask in a survey for emotional vs. rational personality

In a survey I would like to find out the correlation between different factors based on the personal dimension "being more emotional vs. rational". Are there any known studies with items that could be ...
9 votes
6 answers
6k views

Is there any good alternative to the International Affective Picture System (IAPS)?

I'm looking for (particularly negative) emotion inducing pictures or videos. After some research, I think the best known and widely used database is the International Affective Picture System (IAPS). ...
4 votes
3 answers
405 views

Is there a database of disgusting images for stimuli for experimental study of disgust?

I'm looking for a set of images that evoke a disgust reaction. In particular, I'm looking for disgusting objects (e.g. feces, maggots). Is there a database of images like this? It would be especially ...
3 votes
1 answer
671 views

What does fMRI data look like after pre-processing?

I wish to know what fMRI data looks like after preprocessing. My Understanding My understanding is that fMRI is MRI in time dimension that is we have repeated scans of brain volume. A voxel is a ...
3 votes
0 answers
36 views

Task-based fMRI dataset with very simple task (e.g. view stripes)

For my Bachelor thesis I need an fMRI dataset in order to look for causal relationships. I want to be able to confirm my work, so the causal relationships should already be known. Therefore, ideally ...
5 votes
3 answers
145 views

Should I look at the data of an experiment before the dataset is complete?

For a research internship I am running psychological experiments online. As it takes a while until the experiment is done (meaning that enough people participated, so that a sufficient sample size is ...
3 votes
0 answers
119 views

How does on one create a circumplex model (multiple answers)?

Given a list of points with arousal and valence rankings, what is the best way of showing them on a circumplex model, given that they are already tagged with 1 out of 7 selected emotions, are they ...
4 votes
0 answers
52 views

Splitting EEG signal by marker using BrainVisionAnalyser

I have recorded a long EEG experiment with BrainVision equipment and I want to split it into smaller chunks based on marker numbers. For example, I want to have the chunk of recording between markers ...
4 votes
1 answer
322 views

How to look for correlations between heart rate and eda

I am looking for some advice on how to take heart rate (HR) and electro-dermal activity (EDA) data files collected via an Empatica e4 and look for correlation between them. My research project is ...
1 vote
0 answers
120 views

How to work with EDA data in R environment? [duplicate]

I'm looking to pull EDA data from an Empatica e4 into R. I can find packages and code that will enable this in Python and Matlab (see this previous thread) but not R. I'm much more familiar with R and ...
3 votes
0 answers
93 views

Where to find images of the same faces with and without glasses for experiment?

I am looking to replicate the findings of Leder, forster, and Gerger (2011) in their publication of the glasses stereotype revisited. I intend to examine the same conditions of no-glasses, rimmed ...
4 votes
0 answers
111 views

Noise free EEG signal data base

I am working on a research paper regarding EEG signal preprocessing. The first stage includes denoising the signal. However, since I need to evaluate the performance of the method I am using, I ...
5 votes
1 answer
90 views

Where can I find experimental data supportive of the Hick-Hyman law?

The Hick-Hyman law states that in a reaction-time experiment, the average reaction time of a human subject is a linear function of the average information $\sum -p \log p$, i.e. the entropy, contained ...
2 votes
0 answers
103 views

Oblique EPI in afni

It is my very first time with afni and I am having problems with the creation of the afni dataset from dicom images. I runned: ...
4 votes
1 answer
637 views

How to randomise order of survey items in Qualtrics where some items have to appear together?

I have a quick question regarding survey construction that I'm hoping to get some clarification on. Here's my current survey set-up: Question 1 Question 1a (i.e., a question that relates to ...
9 votes
1 answer
14k views

What is the difference between RR-intervals and NN-intervals in HRV-data?

Heart rate variability (HRV) is often used as a measure of the sympathetic nervous system. One way to quantify HRV is by calculating the Inter-beat interval (IBI), also referred to as the RR-interval. ...
1 vote
1 answer
86 views

Searching for real biological neuron firing data [numeric] [closed]

I am searching for real neuron firing data, so I can look at each neuron for fire timing (frequency) and incoming/outgoing signal-strength. I already found short youtube videos of real neuron firing ...