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

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6
votes
1answer
241 views

Minimizing Halo Error

I'm working with a dataset wherein participants rate five different attributes of six device variants; the attribute ratings different variants are very tightly correlated, suggesting that this ...
8
votes
2answers
709 views

When is it defendable to use manifest instead of latent variables in psychological research?

In psychology, most of the concepts, theories, ideas etc. of interest refer to latent variables, where a latent variable is one that can't be observed directly. Instead, one has to find a manifest ...
3
votes
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 ...
6
votes
1answer
148 views

Do we need a pre-test to compare the effectiveness of two treatments?

Assume, I want to evaluate how effective two teachers are in teaching English to German children. Both teachers have been teaching at the same high school for twenty years, and both use a distinctly ...
4
votes
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
votes
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 ...
3
votes
2answers
431 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 ...
5
votes
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 ...
1
vote
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. ...
2
votes
0answers
49 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. ...
8
votes
1answer
132 views

Are there any rules about masking?

I am currently programming an experiment where participants have to do a divided visual field task. In a paper about the correct methodology about these tasks, it is said that you should use a ...
2
votes
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 ...
7
votes
2answers
333 views

How to estimate an expected effect size for a planned psychology study?

When planning a psychological study, researchers are often asked to formulate an estimate of expected effect sizes for important hypotheses in the study. This might be the expected group mean ...
-2
votes
2answers
162 views

Should questions in psychology always be objective questions? [closed]

Is it correct that a subjective question is not a psychological question? I.e. for a question to be psychological, must it be an objective question? E.g. a question about an objective probability ...
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 ...
6
votes
3answers
750 views

Analyzing control questions data for a survey

I have an experimental study with a list of demographic and related questions and in order to identify data from participants that were potentially just answering the questions at random (to get ...
2
votes
3answers
230 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 ...
4
votes
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 ...
7
votes
2answers
279 views

Best practice to handle double negatives when using the expectancy-value model?

My question is regarding the multiplicative combination rule in the Expectancy-value model developed by Fishbein and Ajzen, and the issues regarding the expectancy value-muddle, or the case of "double ...
7
votes
1answer
75 views

How does one study the effect of a dietary supplement on cognition?

I've really enjoyed this talk by Molly Crockett: Beware neuro-bunk. The speaker outlines the limitations of modern neuroscience when accessing the effectiveness of dietary supplements intended to ...
5
votes
1answer
80 views

Are there professional cognitive science test subjects?

I'm interested in how cognitive science experiments are designed and executed. Up until now, all of the papers I've seen dealing with cognition use availability of test subjects as one of the major ...
7
votes
1answer
262 views

Analysis of parameter estimates from Ratcliff diffusion model

I would like to analyze a dataset in which subjects' reaction time and error rate have been recorded. In order to account for potential speed-accuracy trade-off I am planning to make use of the ...
8
votes
1answer
686 views

How to measure group differences incorporating reaction time / accuracy trade-off?

In a psychological experiment I am measuring subjects' reaction time as well as their error rate. Now I would like to compare two groups (males & females). There might be a bias in the sense that ...
13
votes
3answers
473 views

Longitudinal mobile mood tracking app with random reminders

The goal is to take simple measurements of mood using Likert scale over an extended period of time (e.g. two months). I know there is a large number of mobile apps for tracking mood on every ...
13
votes
1answer
525 views

Is there a reasonably valid and reliable self-measure of computer literacy?

Measuring computer literacy or skill is important when grouping respondents for usability studies and other Human Computer Interaction studies. But for the life of me I can't find a good, simple but ...
6
votes
1answer
148 views

Controlling for response bias in a forced choice memory task

I want to present participants a pair of items $a$ and $b$, each with an association $x$ or $y$. Later on participants will presented with the items singularly, and asked 'what was the association?'. ...
7
votes
0answers
78 views

What research exists in the areas of formulating questions and “problem shaping”?

After recalling Eric Steven Raymond and Rick Moen's How to Ask Questions The Smart Way and a discussion in a systems engineering course regarding the impact of the proper formulation of a problem in ...
10
votes
5answers
159 views

Web-based tools for documenting studies?

I am interested in how open science could be done in psychology. Are there good web-based tools that could house and share a study? When I say "study" I mean: Lab notes from collecting data Raw ...
8
votes
1answer
295 views

What is the test-retest improvement in Block Design test?

Background: My lab is conducting a research on perceptual training. We train participants on different tasks, and assess them pre- and post- training on a large battery of tests. Obviously, people ...
4
votes
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, ...
8
votes
1answer
164 views

How to measure student activity, participation, tendency to ask questions, etc?

We would like to compare students from different education systems on the following variables: tendency to actively participate on lessons tendency to ask questions tendency and experience in ...
9
votes
3answers
525 views

Neurotransmitter based imaging techniques

All the brain imaging techniques I know fall into two categories: Tracking blood Either by looking at the magnetic (fMRI), or near-infared absorption (diffuse optical imaging, NIRS) properties of ...
8
votes
2answers
840 views

What articles use structural equation modelling in a meta-analytic context to model mediation?

I'm interested in structural equation modelling (SEM) meta-analysis and its application to modelling mediation relationships. Mike W.-L. Cheung has written a few articles on the topic of SEM ...
7
votes
1answer
180 views

Appropriate metric(s) for quantifying the accuracy gain obtained from averaging dyads of estimates instead of adopting individual estimates?

Background The question relates to research I am doing into the Wisdom of Crowds effect (Galton, 1907; Page, 2007; Surowiecki, 2004), in which an average of the estimates made by individuals proves ...
9
votes
1answer
309 views

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

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
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 ...
7
votes
1answer
105 views

Is it possible to distinguish recall and calculation?

Say I ask subjects what $20 \cdot 20$ is. Is there any way, besides introspection, to evaluate whether subjects recalled the answer or calculated the answer? In general, I would expect that the ...
9
votes
3answers
1k views

What is the standard way to analyze EEG data in a mismatch negativity paradigm?

I'm running an EEG experiment using a modified auditory mismatch negativity (MMN) design, and I'm wondering if anyone can tell me the best method for data analysis (and recommend any stats ...
6
votes
2answers
140 views

Utility or software to visualize Neural Network?

I am using Octave to generate a Neural Network with a single hidden layer, and saving it as two CSV files. Is there a utility or software that will load the files and create an image, PDF or HTML ...
7
votes
2answers
504 views

How to assess participant awareness of experimental deception without inducing awareness?

I am designing a memory experiment with a deceptive critical trial, wherein an item is swapped without the participant's knowledge. What is the best way to determine if the participant has noticed ...
5
votes
2answers
524 views

Free software to run questionnaire based experiments

I am looking for free software to build experiments that do not heavily rely on accurate timing (where I use PsychoPy and heard a lot of good things about OpenSesame) but more on an easy way to ...
15
votes
5answers
721 views

Software for online psychological experiments that don't require users to download anything

We are currently using Inquisit to conduct Internet experiments. Since it is not compatible with non-Windows systems, we lose a lot of potential subjects. Ideally, we would like to implement something ...
13
votes
6answers
3k views

How to analyze reaction times and accuracy together?

Is there a good way to analyze reaction times and accuracy together, other than MANOVA? I have data from an experiment in which participants had to respond to stimuli in two different conditions in a ...
10
votes
2answers
410 views

Is it possible to quantify cognitive bias?

We know that bias exists, and that it affects our judgment and perception. This effect has to do with user's experience in life. That experience is taken care of by the brain, and if you counter a ...
10
votes
2answers
148 views

Measuring the adoption of norms

I'm trying to make a survey and I'm having trouble to find a scale to measure the adoption of norms. The people who fill in the survey have to think about a situation in which they were ashamed. For ...
10
votes
3answers
213 views

Is there a random walk theory that can account for situations with more than two choices?

In the article "Two-stage Dynamic Signal Detection: A Theory of Choice, Decision Time, and Confidence" from 2010 by Pleskac and Busemeyer, a random walk model is presented for situations where a ...
18
votes
5answers
675 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, effectively generating the ...
20
votes
9answers
3k views

How can I create computer based psychology experiments using OS X?

I've used E-prime to create computer based psychology experiments (you know, the kind where you for example show a number of pictures to the participant and record their responses to them, for example ...
8
votes
1answer
113 views

Why aren't sleep measures consistently measured as mediators/moderators of cognitive performance?

Knowing that sleep quantity and quality affects cognitive performance across many domains, why aren't pre-test sleep measures or intra-test measures of arousal a standard part of all cognitive test ...
12
votes
10answers
2k views

Are there any cognitive test (or test suites) available on the iPad?

I find the IPad to be a great piece of hardware that is easy to bring along and that has an intuitive touch interface. This would make it an ideal platform for many cognitive tests such as n-back. As ...