13 votes
Accepted

What tools are available for EEG analysis on the R platform?

Antoine Tremblay has just released an advanced analysis toolbox: http://onlinelibrary.wiley.com/doi/10.1111/psyp.12299/abstract It's missing about half the features on your list, although ...
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  • 2,414
13 votes

What is the relation between measures, constructs and concepts?

In speaking to constructs vs. measures, I believe that the difference is clear and implied in your background: constructs are that which cannot be directly measured (but we assume exists), where ...
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  • 1,263
10 votes

What is the relation between measures, constructs and concepts?

Apologies in advance for the long answer. I tried to narrow down the scope by focusing on only a single construct, and only a single aspect of validity, and it still turned out like an essay... Let'...
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  • 18.1k
9 votes

Calculating d-prime

To calculate $d'$ you need to know two things: the hit rate and the false alarm rate. The hit rate is the proportion of trials where the stimulus was present and the subject responded that the ...
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9 votes
Accepted

Open-source software for analyzing Electrodermal activity

I have found a list of Python and Matlab packages. I'll summarize them over here. As soon as I have gone through the packages, I'll provide some additional details. Online edaExplorer: Also in Python....
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8 votes
Accepted

How can we realize when a sociological question is impossible to answer?

Short version: A question is possible to answer sociologically if and only if its scale and region (informally speaking, its context) are completely defined and its variables of interest are ...
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8 votes

How do cognitive scientists measure creativity?

The Torrance Test of Creative Thinking is a good place to start. It scores for fluency (number of responses) as well as originality (statistical rarity of responses) and elaboration (level of detail) ...
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  • 2,903
8 votes

Differential equations in psychology

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.
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  • 2,617
8 votes
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Physiology behind EEG measurements

EEG research all started with Hans Berger, who in 1929 reported that brain activity could be recorded by measuring electrical activity on the scalp. Although the notion of ‘brain waves’ that were ...
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7 votes

Problems with using personal feedback to motivate participation in an online psychological experiment?

Ethics of Feedback: The APA's code of ethics (2010) as well as the Advisory Group on Conducting Research on the Internet (AGCRI) report (2004) summarize ethical issues related to conducting offline ...
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  • 18.1k
7 votes
Accepted

How is the signal-to-noise ratio of an event-related-potential measured?

Based on your comments I interpret your question as: "(1) What is the definition of the signal-to-noise-ratio (SNR) and (2) how do I determine the SNR for event-related potential (ERP) amplitudes in ...
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  • 19.6k
7 votes
Accepted

Is there a database of disgusting images for stimuli for experimental study of disgust?

Try the IAPS--International Affective Picture System; they have disgusting images as well as norming procedures and data. You can read about it here and request it (as long as you have a faculty ...
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  • 2,903
7 votes

How valid are reaction times collected from online studies?

There are a few factors that could contribute to differences between online versus in-lab reaction time measurement. Hardware variation Participants in an online experiment will use their own ...
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6 votes
Accepted

How can I design a staircase function that converges on a given hit-rate?

If n != m then it will not home in on the 50 % threshold. In these simple N-up/N-down staircases, you can modify either the stepsize (as you proposed) or the number ...
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6 votes

Which statistical tests to use when analyzing NASA TLX?

In Stevens' levels of measurement framework, the NASA-TLX is an ordinal scale, not an interval scale, because there is no way to know a priori how much "workload" each point corresponds to. In other ...
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6 votes
Accepted

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

It depends on the types of changes you are looking to make. In general, my experience has been that changes to a response scale can be done with minimal threats to validity (e.g. looking to change the ...
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  • 1,263
6 votes

How to know whether a methodological technique is quantitative or qualitative?

ANOVA and t-tests are statistical tests for significance and therefore quantitative. The other mentioned items are scales (adding numbers to a certain choice) and therefore they can be considered as ...
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  • 19.6k
6 votes
Accepted

How to know whether a methodological technique is quantitative or qualitative?

It's important to distinguish between measures and analyses, because only analyses can be quantitative or qualitative, not measures. Measures are, essentially, systematic processes by which we ...
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6 votes

The mind as a state of matter or physical system?

Note: This is not intended to set a verbosity standard for answers, but to give a comprehensive example of what kind of information I am looking in order to further clarify the question. An answer ...
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6 votes
Accepted

Freeware for measuring keystroke duration

Psychopy (http://psychopy.org) can do this. It can do it in two ways. Using iohub. Iohub is a crazy powerful way to get any information about any kind of input to your system, from keyboard, mouse, ...
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5 votes

Are there any rules about masking?

Your question was a loooooong time ago, but I just ran across a couple of good references explaining what backward masking does and how to choose one. This(1) is a great paper examining the neural ...
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  • 2,903
5 votes

Where to post online psychology studies for participant recruitment?

After I had finished writing my master's thesis in 2015, I decided to (try to) tackle the problem of small sample sizes with a new approach. The goal was to develop a website that allows everyone to ...
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  • 51
5 votes

Open source software for running Internet psychological experiments that collect reaction time data

We just released a beta version of Tatool Web based on JavaScript and HTML 5 which allows for running web experiments in the browser and measuring reaction times. You can check it out on www.tatool-...
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  • 51
5 votes
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What are the pros and cons of the hot sauce paradigm to measure aggression?

The hot sauce paradigm was reviewed as part of a paper discussing laboratory measures of aggression. They argued that the hot sauce paradigm's main advantages are that it is very economical, easily ...
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5 votes

What are some examples of controversial themes in psychology?

Short answer: Representations are a noteworthy controversy in embodied or situated psychological theories. Can we explain behavior without reference to representations? Long answer: Most modern ...
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5 votes
Accepted

Why compare a target group to a control group when population norms are available?

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 ...
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5 votes
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How to analyze event-related fMRI data with missing fMRI trigger in logfile?

I can see one case in which you still might analyze the data. This only works under three conditions: your paradigm has no variable durations of either stimulus presentations or breaks or others (or ...
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5 votes
Accepted

What is the difference between RR-intervals and NN-intervals in HRV-data?

The difference is rather simple. NN-intervals refer to the intervals between normal R-peaks. During a measurement, artifacts may arise due to arrhythmic events or faulty sensors, for example (Citi, ...
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