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

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5
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1answer
214 views

Status of introspection in psychological research today

Historically, psychological understanding was largely gained by introspection: the philosopher observed the workings of his own mind and deduced the principles of the human psyche from that. During ...
5
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1answer
131 views

Inferring relationships between psychological variables in clinical samples and issues in generalisation

Context I sometimes speak to researchers studying the relationship between variables in clinical psychology samples. A typical example is as follows: 100 patients with diagnosed depression many ...
5
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1answer
646 views

How to use Mechanical Turk for longer studies (i.e., 30 minutes+)?

I'm interested in using Mechanical Turk as a means of recruiting participants for online psychology studies. I have never used it for any research. However, many of my studies take around 30 minutes ...
5
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0answers
64 views

Which study design to use: nested case-control or case-cohort?

I am following a cohort of patients over time from which I am planning to sub-sample a sub-group of patients to pilot a new intervention. The plan is to compare the effectiveness of the new ...
4
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1answer
126 views

What are “Stimulus locked” and “Response locked” in Philiastides & Sajda (2006)

While going through the below-mentioned paper, I came across some plots which were said to be "locked" with reference to either response or stimulus. Does the locking refer to the initiation of the ...
4
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2answers
90 views

Origin of group-level statistics in psychology and cognitive neuroscience

In experimental psychology and cognitive neuroscience today, with the exception of a few specific subdisciplines, the consensus seems to be that an experimental study has to be performed on a group of ...
4
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1answer
97 views

Button box recommendations for a reaction time study

I am running a language production study, and I want to collect reaction times. I am considering getting a button box, because I understand that my laptop (macbook pro) keyboard is not precise enough ...
4
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2answers
79 views

Extending a 5 point ordinal scale to 9 points while maintaining comparability

We have a lot of data regarding a 5 point ordinal scale with descriptors for each point like 'very little' to 'very much'. I am worried that this scale will show insufficient variance in a further ...
4
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2answers
81 views

Is there any (free) program that allows the recording of text input and the speed of input?

I am planning to run a study where participants will been shown questions on a computer monitor and their task is to type their responses in a text box as quickly as they can. Their input and input ...
4
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2answers
133 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 ...
4
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1answer
65 views

How many samples are there when test subjects come through different recruitment strategies?

Let's assume I want to conduct a survey. To find test subjects, I post an ad in a local newspaper, one on a locally relevant website, distribute flyers in front of the train station, and have managed ...
4
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2answers
549 views

Is the Raspberry Pi capable of operating as a stimulus presentation system for experiments?

I'm outfitting a small behavioural lab with a fiscal-austerity-induced budget. I'm considering trying out a Raspberry pi for individual participant systems. My tentative plan is to run linux and code ...
4
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1answer
43 views

Is it reasonable to have a factor with only two levels in a carry-over design for an fMRI study?

I'm planning a carry-over design for an fMRI study. To save time, since it seems that I'll need a huge number of trials for my purpose, I'm wondering if it's reasonable to have a matrix 2x3x3, ...
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0answers
71 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 ...
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0answers
49 views

Resource on how to effectively develop within-subjects vignette based study

Background: Where I used to work fellow researchers used to have a task known as the CV task. The task required participants to answer a number of questions about a set of CVs (e.g., is this a good ...
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0answers
169 views

Plot a schematic outline of the brain

I know that I can read, write and analyse different type of brain scanning data using various Medical Imaging Tools available for R. But I am looking for something very simple - a possibility to just ...
3
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2answers
281 views

What skills are required to build simulations of the human brain? [closed]

I want to build a system that has the ability to gather data from the internet in order to build a cognitive model of the human brain. The model should be able to answer the questions required by a ...
3
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1answer
135 views

How to design an experiment to measure coffee preferences?

Imagine a population of people in an office environment. There is a small war going on about whether this brand of coffee machine is better than that one. How would you go about testing which coffee ...
3
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2answers
43 views

Are there guidelines in the peer reviewing process on assessing methodology?

Usually an article goes through a peer-review process before it is published, and from what I here it is quite common that the reviewers "demand" some changes. Are there guidelines for peer- ...
3
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1answer
53 views

How can I design a staircase function that converges on a given hit-rate?

I'm in the process of creating a simple contrast staircase function where subjects are initially presented with high-contrast Gabor patches and are subsequently queried as to their orientation in a ...
3
votes
1answer
2k views

What is a “delayed match-to-sample task”?

This question talked about how a "delayed match-to-sample task" can be used to measure an animal's working memory. What is a delayed match-to-sample task and how can it be used to measure working ...
3
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2answers
120 views

List of affective states for a study?

I am putting together a study that attempts to assess whether people assign particular affective or emotional states to images--specifically, animated GIFs. Is there a "standard" list of emotional ...
3
votes
3answers
96 views

Research software for conducting a task between card sorting and sketch map drawing

I'm doing research in Spatial Cognition and am looking for software which will allow me to conduct the following task: Participants will walk around a space and sit down to a computer task ...
3
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1answer
45 views

How can I create a set of comparable symbols of different shapes?

I was thinking about doing a small experiment during university course where participants have to answer a personality quiz and then they have to compare different symbols (like triangles, rectangles ...
3
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2answers
432 views

How to conduct surveys using facebook?

More and more often I read in papers, that an online survey has been conducted through Facebook. What I have yet to understand is how this can best be done. I understand that Facebook allows the ...
3
votes
1answer
2k views

How to compute Chi-square value and degrees of freedom in Excel?

I am trying to understand the statistical test of the chi-square in Excel. I already made the test but I still don't know how to compute the χ² value and what it means, how to compute the degrees of ...
3
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1answer
41 views

Which ready-made programs can I use for running a preference-rating experiment?

I'd like to run an experiment in which 64 images are presented (1 at a time) and participants rate their preference for the image on a slider scale, and I'm wondering what the best and cheapest way to ...
3
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1answer
587 views

Is there a Dot-Probe Paradigm / visual-probe task available online?

Is there an online resource to take the Dot-probe paradigm test> When I searched I could only find a guide to set up a server for such a test. However, I don't have the ability to do that. I'm ...
3
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0answers
76 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
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0answers
22 views

Is there an extension of multinomial process models that incorporates response latencies?

In an experimental setting where a categorical response has to be given, the same response can, in theory, be generated by different latent processes. For example, in an experiment where participants ...
3
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0answers
163 views

Where to recruit paid participants for online Inquisit experiments?

My team and I are trying to use Inquisit for a reaction-time based experiment looking at attentional bias. However, with the no download policy on Mturk and CrowdFlower, we don't know a good site to ...
2
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2answers
70 views

How many trials are needed to estimate a response time distribution?

I want to estimate the properties of a response time distribution (mean, variance, tail-length) for individual subjects. How many samples (trials) do I need to collect to get reliable estimates? ...
2
votes
2answers
57 views

How to test for malingering in criminals trying to deny capacity for criminal responsibility?

Psychiatrists and psychologists are often tasked with assessing a criminal defendant's competency to stand trial or his capacity for criminal responsibility. What objective tests are useful for ...
2
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1answer
425 views

How to design research participant recruitment flyer to maximise participant response?

I often supervise student research projects. Often these projects involve recruiting participants by placing one page flyers in strategic locations. The most common scenario is that the flyer is ...
2
votes
3answers
231 views

Lexical Decision (Web-)App

I want to make a lexical decision experiment, is there any freely available software for this? A Javascript-based webapp would suit me best, as it would run in the browser without the need to install ...
2
votes
2answers
78 views

How are research participants normally divided into equal groups to allow scientific comparison?

I'm neither a academic nor familiar with the proper English choice of words regarding research. However, I would really like to know a few things about the process of doing a research with people ...
2
votes
1answer
38 views

A subtle test for color-blindness

Is there a test method of proving a person being color-blind, without letting the test subject know, that he/she is being tested? E.g. showing the person cards with colored dots like depicted here is ...
2
votes
1answer
64 views

Do unequal step sizes in staircase procedure affect the convergence?

Consider a psychophysics procedure using a standard staircase method to adaptively find the threshold, using a 2AFC paradigm and a 1-up, 3-down method to determine the 75% threshold. Now suppose the ...
2
votes
2answers
42 views

How to study the effect of sustained exercise and sport on well-being?

I´d like to make a little case study about the impact of including regular weight training in life. I know one man who is going to start to excercise regularly and I have an opportunity to talk with ...
2
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3answers
143 views

Name needed for psychological practice which uses objects that represent humans [dolls/pictures/etc.] during patient treatment

What is the name of practice/method (if such exists) where psychologist uses a doll (or any other form of human-being representation) for patient to talk to? I believe I have seen it in a movie or ...
2
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0answers
39 views

Detecting signs of dementia in EEG signal

I would like to know, how dementia can be recognized in the EEG signal of patients with dementia. What I have found so far: According to (Henderson et al., 2006) subjects with dementia are ...
2
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0answers
50 views

What Quantified Self reserach tools are there for measuring performance while playing videogames?

I've recently became aware that there's a whole field of quantified self - using various methodology to collect data about human performance in an attempt to "quantify" how the human body/brain works. ...
2
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0answers
156 views

How does a researcher typically go about conducting a survey-based psychological experiment? [closed]

What is a typical approach to conducting a survey-based psychological experiment? There seems to be a host of issues involved; some that seem particularly important are: the appropriate design of ...
1
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4answers
60 views

Best way to capture effect of making people upset?

I am an undergrad, I am planning to do some research to see how much I enjoy it before I apply for grad programs. I am researching the effects of a certain characteristic of a presenter making people ...
1
vote
1answer
62 views

Getting analysis of changes in MY brain upon cannabis consumption [closed]

I want to know if/how my brain differs from other brains. I'm also interested in knowing exactly how my brain changes when I smoke marijuana, as it is claimed that it affects individuals differently. ...
1
vote
1answer
39 views

What is the best way to structure an ethnographic study?

I'm writing an ethnographic study for a human computer interaction module and I understand all the processes of conducting ethnography. I am unsure of how to structure my study. Is it conventional ...
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0answers
20 views

Automatically register data from paper forms

I'm going to perform an experiment in which we're using a lot of different paper forms to collect data, all of them with multiple choice designs. Is there any way to automatically register this data ...
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0answers
36 views

Can microdialysis be made in Drosophila melanogaster?

Microdialysis is a common method to study the effects of drugs on specific mamal brains zones (mostly in rats), in order to study the it's interaction with the function of those specific areas that ...
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0answers
35 views

How to identify participants answering online questionnaires who have not paid attention? [duplicate]

I often analyse data that involves participants completing a selection of psychological tests online. A concern with online testing is that some participants may not complete the task conscientiously. ...
0
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2answers
59 views

Is cognitive science hypothesis-based or bound to strict experiments involving statistics?

When I look at medical journal articles on Google Scholar I see a lot of stuff based on double blind placebo tests. From this, I've gathered that medicine often performs experiments. I've been in ...