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Questions tagged [methodology]

For questions about experimental and theoretical methods, procedures, and tools used while conducting research in the cognitive sciences.

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2 votes
1 answer
185 views

How to design psychology tests for concept formation?

I've read many papers on concepts, but their tests are sparsely described or abstractly mentioned. I want to test for classic, prototype and exemplar theories. How do you approach the problem? Some ...
5 votes
1 answer
773 views

How to report a quasi-experiment in APA?

As one reads the psychology literature (e.g. social psychology), it seems to me, and I hope I'm not wrong, that such a discipline is highly dependent on quasi experiments (correct me if I'm wrong ...
4 votes
0 answers
39 views

Timing accuracy in presentation of videos with different frame rates (with COGENT)

For our fMRI study we want to present videos of 3 seconds duration. The videos have different frame rates: 48 videos were recorded with 50 fps 16 videos were recorded with 25fps 64 videos were ...
1 vote
0 answers
26 views

Somatosensory evoked potentials

I am wondering what the best EEG recording montage is to use for recording of electrically evoked somatosensory evoked potentials after median nerve stimulation?
4 votes
3 answers
523 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 ...
4 votes
2 answers
212 views

Reason for Inter-stimulus-Interval in psychology studies

In many of the studies that I have read or participated in, I have seen that they show a blank screen between two stimuli. For example, in a study by Cohen et al. (2017), a training paradigm was used ...
16 votes
7 answers
14k views

Where to post online psychology studies for participant recruitment?

A common challenge when running psychological studies is getting enough participants. Of course, there are many general strategies for recruiting participants, but I was specifically interested in ...
3 votes
1 answer
322 views

In general, how does one resolve two competing theories in Psychology?

In looking at a post on twitter from a somewhat well-known psychologist Tal Yarkoni, he references a paper which lists multiple sets of competing theories in Psychology that have not been resolved. ...
3 votes
1 answer
1k 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 ...
-1 votes
1 answer
8k views

What test can be used to measure memory?

We want to have a test to determine the status of a person's memory. For example, a good test might consist of multtiple choice questions and take 5 - 10 minutes. The end result would be a summary ...
0 votes
1 answer
59 views

How can I take the Token Test?

I want to take the Token Test Is there some website where I can take the test for free? Alternatively, is there some simple guide to how the test works so I can re-create it?
5 votes
1 answer
99 views

Is there anything comparable to the IPIP for IO psychology, work psychology and the like?

The International Personality Item Pool is a public domain collection of over 3000 items and 250 scales. Is there anything comparable for work psychology and the like?
5 votes
3 answers
372 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 ...
2 votes
1 answer
150 views

Is it recommendable to put participants in different conditions across trials?

In a pilot study we want to give participants 3 different problems. Those come in two versions, one (supposedly) easier than the other. Participants will randomly be assigned one version of the ...
5 votes
1 answer
1k views

John Calhoun's Mouse Utopia and Genetic Diversity

I learned about John Calhoun's Mouse Utopia experiment from this Youtube video. The corresponding 1962 paper isn't readily available. What I want to know is, did Calhoun account for genetic diversity ...
2 votes
0 answers
101 views

Is synchronization between the MRI scanner and the stimulus presentation necessary for every trial?

I'm planning an event-related fMRI-experiment to investigate the difference in processing natural and computer-generated facial emotion expressions. I've seen a lot of studies that synchronize the ...
3 votes
0 answers
297 views

PSE with Palamedes or Psignifit

I have used a Cumulative Gaussian function to fit the data I got from a 2AFC experiment. How can I calculate the point of subjective equality using the Palamedes toolbox for matlab or the psignifit ...
3 votes
0 answers
69 views

How do different emotional intensity ratings within a condition influence the comparison across different conditions in an event-related fMRI task?

I'm planning an event-related fMRI-experiment to investigate the difference in processing natural and computer-generated expressions. For this, we recorded videos of 4 different actors posing fearful ...
3 votes
1 answer
151 views

What is the best unobtrusive and objective method to measure mental workload?

What is the current research/industry standard on measuring mental workload using objective measurements (e.g. EEG, eye-tracking)? Do you have any suggestions for specific tools and techniques? Are ...
8 votes
3 answers
1k views

Freeware for measuring keystroke duration

I am searching for freeware to measure the duration of a keystroke or mouse-click, both would work. Does anyone have an idea? Matlab toolboxes are, unfortunately, of no use to me.
4 votes
1 answer
337 views

How exactly does transcranial direct current stimulation (tDCS) work?

The method of transcranial direct current stimulation (tDCS) involves the flow of electric charge from a positive electrode to a negative one. This method is not exactly a stimulation method because ...
7 votes
2 answers
214 views

Accuracy of psychopy keystroke duration measurement

I am using Psychopy and this code for measuring keystroke duration as suggested in this answer for my previous question: ...
1 vote
2 answers
556 views

Platforms to make online experiments with counterbalancing

There are a number of different interfaces to make an place experiments online, e.g. in questions Software for online psychological experiments that don't require users to download anything or ...
3 votes
1 answer
687 views

Can a bipolar EEG signal be converted to a monopolar (unipolar) one?

I have bipolar EEG signal of Fpz-Cz of EEG sleep data which I have downloaded from physionet. I would like to have Fpz signal for my sleep study. Is there any way I could convert a bipolar EEG signal ...
1 vote
0 answers
54 views

Assessments of depression: Does the rate of false positives vary between the qualification of those testing?

A friend recently asked me an interesting question to which I couldn't find the answer. Does the accuracy of depression assessments vary by the profession i.e. Nurse, GP Vs Clinical Psychologist, ...
2 votes
0 answers
93 views

(Ekmans' Atlas of Emotions) What meaning (if any) can be deduced from the geometry of the "mountain" depicting a given emotion?

I have recently discovered that the Atlas of Emotions may be a useful tool in a research project I am working on. While lovely to look at, the Atlas seems to lack any description of the data encoded ...
1 vote
0 answers
34 views

Gamifying surveys by measuring the ability to discern popular taste

I am working on a crowdsourcing platform where participants are given a set of choices between two items (for instance, books or movies). Out of each pair, they are to select an item which they think ...
6 votes
3 answers
3k views

How to measure galvanic skin response with wearables?

I'm trying to measure galvanic skin response in real-time with a wrist-wearable device, similar to what is being done in the paper "Using Noninvasive Wearable Computers to Recognize Human Emotions ...
4 votes
1 answer
103 views

Is there a validated questionnaire on consumer well-being?

I am conducting a study comparing different cigarettes in terms of their relative toxicity. As a side analysis, I wish to see if a novel cigarette, purportedly less toxic, is similarly pleasurable. ...
4 votes
1 answer
5k views

What can clinical psychologists do that psychiatrists can't do?

From Yahoo Answers: For example, I know that psychiatrists can prescribe medicine and psychologists CAN'T, but are there any things that clinical psychologists are specialised in that ...
4 votes
1 answer
130 views

Latency between actual neurons firing and muscles response in open and close fist experiment

I'm trying to analyze the electrocorticograms (ECoG) of opening and closing the fist. I have the data of a glove to capture when the hand moves. I'm struggling with finding the best epoch or segment ...
5 votes
1 answer
329 views

Calculate threshold from 'binary' yes/no data

For various reasons, I have a crappy experimental design that I am forced to deal with. I present subjects with 20 yes/no trials, out of which 5 are no-signal catch trials and 15 are signal trials. ...
4 votes
1 answer
557 views

At what time in a psychophysical test are catch trials preferably presented?

I am designing a tone-in-noise detection task (specifically a high frequency N0Spi task). For various reasons I need to use a yes-no paradigm and the method of constant stimuli. I am severely limited ...
2 votes
2 answers
120 views

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 ...
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 ...
5 votes
2 answers
120 views

Episodic Memory Decoding

I'm planning a study on memorability of episodic events. Therefore, participants record a couple of hours of their daily life using an egocentric camera (encoding). After a certain time, they are ...
6 votes
1 answer
3k views

How is the signal-to-noise ratio of an event-related-potential measured?

I often encounter publications where the authors try to "increase the SNR (signal-to-noise ratio) of electroencephalogram (EEG) signals". Some define a numeric value of SNR of EEG signals, but I am ...
1 vote
0 answers
68 views

Is psychology equivalent to physics of the 1900s? [closed]

I read that psychological inquiry can be analogized to the work done by physicists long ago before modern sophisticated theories, such as electromagnetism. According to the argument, psychologists ...
3 votes
2 answers
168 views

How to track eye movements with electrodes?

I'm an Information Technology student (bachelor's degree) and as a summer project, I'd like to develop a small "alarm" system for ALS patients in case of emergency situations. I thought about ...
23 votes
5 answers
2k views

Can response time be incorporated into signal detection theory?

In signal detection theory, one typically uses "signal" and "no signal" responses to analyze the data (that is, the analysis is based on a discrete choice for each trial, generating the four possible ...
3 votes
1 answer
3k views

Where should I place a reference electrode?

This site gives basics of how to place electrodes for action potential recording. What I understand is that in order to get better signal, the reference electrode must be placed where there is minimum ...
2 votes
1 answer
974 views

Is there a conventional use of the term "empirical grounding"?

Background The notion of grounding theory in empirical data, originates from the work by Glaser & Strauss (1967). At present, while reputable scholars, for instance Eisenhardt and Graebner (2007),...
5 votes
1 answer
189 views

Cultural psychology: Japanese culture and meaning systems [closed]

I'm writing a paper for my cultural psychology course. The paper is about Japanese child care, focused on the moral and cognitive development of Japanese children from their own traditional/cultural ...
4 votes
1 answer
71 views

How to obtain well-written demographic items?

I've noticed over the years supervising student projects that it is actually surprisingly difficult to write good demographic items. Specifically, I'm thinking about questions related to gender, age, ...
7 votes
1 answer
2k views

Manipulating cognitive load in online experiments

I'm under the impression that standard cognitive load manipulations (e.g., remember a 7-digit number while completing some other task) wouldn't work for online subject pools like Mechanical Turk. Are ...
3 votes
0 answers
49 views

What is the effect of Gibbs artifact on multi voxel pattern analysis?

I have collected a EPI BOLD sequence data using Siemens skyra 3T. The voxel size is 3x3x3 mm^3. TR = 2s. I am seeing Gibbs artifact similar to the image: People have suggested to smooth the data to ...
3 votes
1 answer
51 views

Is it appropriate to do a study using only one trait from a larger personality inventory (e.g., Extraversion)?

I'm looking to gather peer reports and self reports of extraversion. Can I send out an item inventory that only has extraversion related items?
3 votes
1 answer
61 views

How to record mouse-pointer fixations? [closed]

I'm planning an experiment in which participants will respond to a stimulus by using a mouse to click somewhere on a computer screen. I'm interested in analyzing the strategies participants use to ...
2 votes
0 answers
40 views

Shape versus numbers [closed]

Do adults recognise numbers or shapes quicker? Have there been any studies on this? If an adult was asked to press a corresponding button when presented with a shape or number, which would they ...
6 votes
3 answers
2k views

Is it possible to objectively measure the amount of pleasure a person is experiencing?

I'd like to know if it's possible to quantify somebody's "fun meter". Maybe by measuring the amount of endorphin produced. Because every person is unique, I don't expect that amount to make another ...

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