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

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7
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1answer
121 views

What are the most used statistical methods in WM research besides (generalized) linear modeling?

I mean, by cognitive psychologists. I skimmed over a few articles from Journal of Cognitive Neuroscience and Trends in Cognitive Science and concluded that ANOVAs and t-tests are mostly used (without ...
3
votes
1answer
33 views

How to engage in the conceptualization process to measure a psychological construct such as femininity?

I am in class for Research Methods and I am having troubles with a conceptualizations process. The question is to describe the conceptualization process you would employ to measure femininity. How ...
4
votes
2answers
203 views

Colorado Boulder study about brain morphometric measures of Cannabis users methodologically weak?

I'm relating to this study: http://www.jneurosci.org/content/35/4/1505.short The researchers found no differences in subcortical brain structures for daily Cannabis users vs. controls. However the ...
3
votes
2answers
187 views

Calculating d-prime

I'm currently working on a research that has to use and calculate D Prime values for a task where subjects are presented an image at different speeds and they have to report if they saw the image or ...
1
vote
1answer
269 views

What's the difference between inductive and deductive research in cog sci?

I'm not really clear on what the implications are for inductive vs deductive research methodology and analysis. Any examples or input would be great!
1
vote
0answers
30 views

Accuracy of methods for detection of dementia in EEG [closed]

I found these methods mentioned in bioengineering and other papers: Fractal Dimension Measure, Probability Density Function of the Zero-crossing Intervals, Approximate Entropy But I think every of ...
3
votes
2answers
50 views

What speech synthesis software is suitable for research?

I'm looking for recommendations for speech synthesis software that can be used to generate audio stimuli. The audio stimuli that I'm trying to generate will be long sequences of isolated syllables. ...
3
votes
1answer
94 views

Dichotic listening tasks and crosstalk

In a dichotic listening task where participants listen to different (frequency-wise) musical tones through headphones, is cross talk to the contralateral cochlea of each ear through bone conduction a ...
3
votes
0answers
66 views

How effective are online providers of paid participants for psychological experiments?

I'm looking for places to recruit participants for online experiments, and in particular, for experiments using Inquisit Web. My lab used to recruit participants through M-Turk but that's no longer an ...
3
votes
1answer
31 views

Participant / Subject Pool Management Solutions

I am searching for a subject pool management system for human subject research. Almost all institutions appear to use Sona-systems. Do any alternatives exist?
5
votes
1answer
357 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 ...
8
votes
1answer
122 views

Is there a report of a successfully EEG-Based Brain-Computer Interface (BCI) using image training?

Currently I am involved in constructing an EEG-Based BCI. The goal of the BCI is to control which light in a series of lightbulbs lights up. The plan is to use different images (i.e. a flower versus ...
3
votes
0answers
58 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 ...
3
votes
1answer
59 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 ...
3
votes
1answer
180 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
48 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
votes
2answers
96 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 ...
7
votes
2answers
471 views

Which statistical tests to use when analyzing NASA TLX?

The NASA Task Load Index (NASA-TLX) is a subjective, multidimensional assessment tool that rates perceived workload. A set of different scales (Mental Demand, Physical Demand, Temporal Demand, ...
7
votes
1answer
2k 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 ...
3
votes
0answers
46 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 ...
4
votes
2answers
119 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 ...
0
votes
1answer
77 views

What is a good rough rule of thumb regarding required sample size for questionnaire studies?

I need to perform a questionnaire as part of my final project. What are the quick-and-dirty rules for knowing how many respondents I need to get meaningful results?
5
votes
0answers
188 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 ...
4
votes
0answers
371 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 ...
1
vote
4answers
73 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 ...
3
votes
2answers
306 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 ...
2
votes
2answers
205 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? ...
3
votes
1answer
146 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 ...
4
votes
0answers
25 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 ...
2
votes
1answer
78 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. ...
3
votes
2answers
445 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 ...
4
votes
1answer
189 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 ...
0
votes
2answers
72 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 ...
4
votes
1answer
272 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
votes
1answer
526 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 ...
3
votes
1answer
50 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
votes
2answers
98 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 ...
2
votes
2answers
186 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
votes
0answers
295 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 ...
7
votes
3answers
196 views

Why did Richard Feynman appear to recommend replication before manipulation when conducting lab experiments?

In Richard Feynman's classic Cargo Cult Science speech. He talks about a type of scientific error made, where a person takes a previous experimental result for granted when designing an experiment. ...
7
votes
1answer
146 views

Significant baseline, Oddball paradigm

I recently conducted an EEG experiment using a passive Oddball paradigm with two experimental conditions : standard stimuli (occurring with a 85% probability) and deviant stimuli (occurring with a 15% ...
4
votes
2answers
206 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 ...
6
votes
0answers
84 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 ...
1
vote
1answer
41 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 ...
-1
votes
1answer
63 views

Build model to explain data [closed]

I'm not a psychology student, but I'm doing a subjective experiment which is similar to magnitude estimation: simply measure the effect of different stimulus through a number from 1-10. Now I need to ...
3
votes
1answer
48 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 ...
6
votes
1answer
772 views

Reducing ceiling effect with a Likert scale measure

I am designing a psychology study in which the main endpoint is the perceived effectiveness of various medical treatments. In pilot trials, we used a bipolar Likert scale to measure perceived ...
7
votes
1answer
139 views

How to set up a binocular rivalry experiment which splits a single image in two separately controlled ones?

The question is about the actual physical setup and steps needed to take in order to experiment with the phenomena. I found a tutorial on jove.com, "How to Create and Use Binocular Rivalry", and it ...
3
votes
3answers
139 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 ...
11
votes
3answers
316 views

Are there third party providers of Mechanical Turk psychology experiment services?

For various reasons it can be difficult to run a Mechanical Turk experiment (i.e., you don't have the technical expertise, you don't reside in the United States, etc.) Have any third-party providers ...