Hot answers tagged

7

The Hodgkin and Huxley model of neuronal firing is based on non-linear differential equations. A significant portion of research on sensation and perception is based on such models.


5

Say your juvenile offender are on average 16 year old boys from Britain, and the control group consists of (on average) 16 year old British boys who haven't done anything wrong. The only difference between these groups are the fact one has a criminal record or not. If you would look at the true norm, you could be looking at the world wide norm of both boys ...


4

I am not an expert on these scales, but my 2-cents worth would be the following, which are simple work-arounds to include all the data: Fine as is; Take the middle of the thick line (the 'average'); Take the center of the circle (draw a cross in it, the intersection is the middle); Apparently "0" - no pain; Take the tip as the marker; Apparently "100". As ...


4

A large and notable area within psychology to which differential equations are central is dynamical systems theory. It is widely applied to cognitive science. Differential equations are used to describe (model) the states on one or more dimensions that a system can take which changes over time. Dynamical systems have been widely used to model cognition. ...


3

You kind of have to do some kind of baseline correction first (or a highpass filter on the unepoched data) because of slow drifting. Lowpass filtering before artifact rejection is fine as long as you don't ever go back to the unfiltered signal in your analyses. After that, you can either throw out trials that exceed a set threshold, or you can do a two-step ...


3

The question is a little vague, but here is a partial answer. There are a number of EEG systems available that are low-cost. Examples include Emotiv's EPOC System and the OpenBCI project. The former has been available in various models for some years now and it has been established that it records real EEG signals, as opposed to just recording signals ...


3

The recent visual working memory literature has predominately used the method of adjustment. In particular, there is a lot of work using continuous color adjustment tasks: Wilken P., Ma W. (2004). A detection theory account of change detection. Journal of Vision, 4 (12): 11, 1120–1135. Zhang, W., & Luck, S. J. (2008). Discrete fixed-resolution ...


3

It depends on what you mean by manipulation check. Manipulation check to filter participants: A manipulation check is usually done to verify that some experimental manipulation has had some preliminary effect. For example, in one of my studies I asked people to answer a personality test (a) honestly, (b) as an ideal worker, and (c) as the worst possible ...


3

To complement the answers, there's also Just Another Tool for Online Studies: JATOS (disclaimer: I'm one of the authors). It's an open source tool that focusses on the server side. It will provide: a secure server a database (MySQL or H2) participant management (optionally prevents repeated access) a graphical user interface to access results run group ...


2

It has been a while since the question was asked, but I am going to give my answer anyway. PsychoPy is really good and easy to use and is what I typically recommend people to use. However, I recently found the Python library Expyriment and it seems promising. Although you will have to write your own code there are available methods for creating the window, ...


2

We have developed an iPad cognitive test battery (CABPad) for use at bedside with stroke patients: www.cognisoft.info. It is used for research at two university hospitals in Copenhagen and a publication on validation is currently being prepared for publication (see this abstract from The International Stroke Conference, Feb 2015: L Willer, PM Pedersen, A ...


2

There actually is the same kind of controversy over depression. The French documentary Dépression, une épidémie mondiale nicely summarizes how a well-meant change in diagnostic criteria (from DSM-IV to DSM-5) backfired and the pharmacoceutical industry now use this to diagnose every sadness or exhaustion as depression with the intention to sell drugs and ...


2

Researchers are trained to address this problem by using literature reviews to isolate the specific variables that should be of most interest. At the start of research you generally examine the knowns and unknowns in the particular area of interest, so as to determine the state of the art in that area. Once you know the state of the art you have a better ...


2

when I was planning a pilot study in which we planned to use cross-modality matching I came across some studies. Human Factors and Ergonomics researchers seem to still use the Method of Adjustment. At least, I found a couple of conference papers in which they examined warning signals for cars. Unfortunately, I don't remember the titles but I think one of ...


2

In addition to studies of patient with particular focal lesions, brain function in particular areas can also be studies in other ways. For one, functions are often conserved between species so that studying animals can give some indication of the role of a brain region in humans. This may be done by applying lesions or through treatment with genetic or ...


2

Often, we learn about brain functions when parts of the brain become damaged. One famous example is that of Phineas Gage. He survived severe brain damage, and his character and abilities were noticeably different. From the article:- Some months after the accident, probably in about the middle of 1849, Phineas felt strong enough to resume work. But because ...


2

Method of adjustment is still in use in vision science, especially when dealing with illusions. Its major advantage over, for example, 2AFC tasks is the speed of estimation -- you need way less trials to measure the effect, which could be useful in clinical settings [1]. You could also try to search for "nulling" instead of "adjustment" -- nulling is the ...


1

Both Carol Dweck and Angela Duckworth have fairly brief tests meant to measure student success and by some extension grades. Dweck's work focuses on how having a "fixed mindset" limits a students ability to grow in a subject and is used to explain why students are so apt to give up when met with challenge. Her quiz would have to be formatted for pen and ...


1

The article by Gudmundsson (2009) looks very useful. It describes an eight step process for translating and adaptive psychological instruments. The article is written clearly with concrete suggestions and references to the broader literature. selecting an instrument for translation selecting qualified translators selecting qualified experts ...


1

You use the words "experiment" and "correlate" somewhat loosely in your question, but there are various ways that we can address the general idea in a more rigourous way. Let's consider two possible situations: (1) You randomly put people into two groups and found that group A likes pepsi much more often than group B. (2) You had an idea that people with, ...


1

When you do research you do not do it on a blank slate. Research is based on previous theory. You usually know very well your subject and have an idea or a guess of what variables could be important. Finding a correlation that has never been found before can in itself lead to an article (at least in vision research). Proving that the correlation is causal ...


1

Short answer is that psychiatrists are medical doctors and (more often than not) medical researchers, and thus psychiatrists themselves often do not practice psychotherapy. Psychiatrists Psychiatrists are physicians, which means they have received a medical degree (M.D.) and have completed medical training, along with an additional four-year residency in ...


1

Question: if you have used such softwares to make experiments, what did you think about the process? We use Paradigm (www.paradigmexperiments.com) in our lab and like it quite a bit. You can build most experiments just with the drag and drop builder interface. It also supports Python scripting just to give you more flexibility (and piece of mind in case ...


1

The concept of creativity per se makes it hard to measure it in a standardized way, since creativity by definition opposes standardization. Even tests such as the one suggested by Krysta run into the problem that in order to rate answers with regard to their rarity will have to rely on some kind of standardization according to which one can rate the answers ...


1

HDDM allows to fit a hierarchical drift diffusion model and gives you the posterior of the group effects. That means, the model is fit for all subjects simultaneously. Subjects are allowed to vary, but an underlying shared effect is assumed (and the same model is fit for all subjects, although of course a parameter may end up as 0 for a subject). The model ...


1

You should have a look at otree, "a Django-based framework for implementing multiplayer decision strategy games". It is manly designed for experimental economics, but it is a very neat and versatile piece of software, and I am sure you could actually run most psychological experiment with it. Once the experiment is coded, it only requires internet access ...



Only top voted, non community-wiki answers of a minimum length are eligible