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

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2
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0answers
42 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 ...
-1
votes
1answer
55 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?
6
votes
3answers
164 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. ...
4
votes
0answers
96 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
169 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 ...
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 ...
1
vote
4answers
64 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
179 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
90 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
73 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 ...
2
votes
1answer
67 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. ...
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
2answers
159 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 ...
3
votes
2answers
144 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
152 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 ...
-2
votes
2answers
179 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 ...
15
votes
5answers
842 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
4k 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 ...
17
votes
2answers
6k views

Free online intelligence test with norm table, high reliability, and must be printable?

I am looking for a general intelligence test which meets the following requirements: available online for free there is a table which translates "points" to IQ (I don't want a hidden online ...
8
votes
2answers
896 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 ...
0
votes
2answers
66 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 ...
13
votes
3answers
548 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 ...
4
votes
1answer
143 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 ...
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
1answer
223 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
2answers
85 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
votes
2answers
93 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 ...
-1
votes
1answer
61 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 ...
7
votes
1answer
130 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
154 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
76 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
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 ...
6
votes
1answer
481 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 ...
3
votes
1answer
47 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 ...
10
votes
3answers
2k 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 ...
3
votes
3answers
119 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 ...
6
votes
1answer
281 views

Descriptive models of different types of consciousness

In behavioral experiments we get the first-person responses of the participants. The third-person perspective is available through the collected data. There is a second-person perspective collected ...
2
votes
0answers
168 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 ...
4
votes
0answers
185 views

Plot a schematic outline of the brain [closed]

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 ...
7
votes
1answer
558 views

What is the relationship between sociology and cognitive sciences?

I want to know what is the relationship between sociology and cognitive sciences. Let me start by short consideration of both: Sociology - well established discipline or a field of research ...
9
votes
1answer
765 views

What were the long-term effects on the participants of the Stanford Prison Experiment?

It has been maintained by Dr. Philip Zimbardo that the experiment has had no long-term harm on the participants. However, one out of the 24 initial participants, who had suffered a breakdown within 36 ...
8
votes
1answer
173 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 ...
7
votes
1answer
314 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 ...
3
votes
2answers
44 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- ...
5
votes
1answer
280 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 ...
6
votes
0answers
69 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 ...
6
votes
2answers
390 views

How should multiple Mechanical Turk research subjects from the same IP address be handled?

I saw this question on Twitter from Jay Van Bavel (@jayvanbavel), and thought it was a good fit for the site. Does anyone find that multiple subjects from the same IP address in their #MTurk ...
3
votes
1answer
680 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
votes
2answers
506 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 ...
7
votes
1answer
158 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 ...