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

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4
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1answer
82 views

What is the relation between measures, constructs and concepts?

It is uncontroversial to say that the cognitive sciences do not exclusively deal with directly observable phenomena, but nonetheless aim to study the physical causes of behavior and cognition ...
3
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1answer
59 views

How can items from a general self-esteem/efficacy measure be changed to measure context specific self-esteem/efficacy?

I am very interested in a survey employing a Likert type scale in my research. I have come across the Rosenberg Self-Esteem Scale. I would like to use this scale to get a sense of how subjects feel ...
5
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3answers
105 views

How valid are reaction times collected from online studies?

Online studies promise the possibility of greatly increased numbers of and variability in populations to study, but there are many potential concerns and need for validation, and diving in head first ...
2
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0answers
32 views

How to measure precision in classical test theory framework?

What methods or approaches exist or might be developed to measure precision of measurement in a classical test theory framework? (The 2014 "APA" Standards for Educational and Psychological Testing ...
4
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1answer
14 views

Is there a downside to using more than the typical 20/40 trials in an IAT?

Most resources mention using 20 'practice' trials categorizing both targets and attributes, followed by 40 'real' trials categorizing both targets and attributes. Note that this is after practicing ...
2
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2answers
47 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
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0answers
63 views

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

I mean, mainly, 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, ...
2
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1answer
19 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
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2answers
170 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
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2answers
61 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
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1answer
20 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
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0answers
17 views

Accuracy of methods for detection of dementia in EEG

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
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2answers
41 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
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1answer
82 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
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0answers
34 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 ...
2
votes
1answer
26 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?
3
votes
1answer
107 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
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1answer
111 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 ...
2
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0answers
44 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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1answer
44 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
87 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
44 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 ...
0
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0answers
26 views

Automatically register data from paper forms [closed]

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 ...
2
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2answers
68 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
1answer
342 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 ...
2
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0answers
41 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
96 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 ...
-1
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1answer
47 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?
4
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0answers
83 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
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0answers
143 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
62 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
159 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
79 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
65 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
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0answers
24 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
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1answer
65 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. ...
2
votes
2answers
105 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 ...
3
votes
1answer
145 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
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0answers
23 views

What is the thought process to solving anagrams à la Countdown

I'm wondering what the thought process behind solving anagrams is, as in, pulling words out of random letters, like in the game Countdown. I am never very good at this game, and I think it's because ...
0
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2answers
63 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
127 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
184 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
44 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 ...
4
votes
2answers
83 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
3answers
153 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
214 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 ...
6
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3answers
161 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
125 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
148 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
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0answers
72 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 ...