For questions about the application of specific experimental methods to study psychology.

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19
votes
8answers
2k views

How can I create computer based psychology experiments using OS X?

I've used E-prime to create computer based psychology experiments (you know, the kind where you for example show a number of pictures to the participant and record their responses to them, for example ...
18
votes
5answers
419 views

How long does it take to read a sentence with X number of characters?

How does the time needed to read a sentence scale with the number of characters? Or does this time scaling depend on something more than just character count? For example, let $X$ be the number of ...
18
votes
1answer
412 views

Medium-term effects of polyphasic sleep on performance

Typical sleep patterns of one big block of 6 to 9 hours with no naps is usually referred to as monophasic sleep. A second natural sleep pattern is biphasic sleep which breaks up your sleep into two ...
16
votes
5answers
545 views

Can response time be incorporated into signal detection theory?

In signal detection theory, one typically uses "signal" and "no signal" responses to analyze the data (that is, the analysis is based on a discrete choice for each trial, effectively generating the ...
13
votes
2answers
594 views

Is there an R implementation of the linear ballistic accumulator model or Ratcliff's diffusion model for measuring response time and accuracy?

I am looking for an implementation of the linear ballistic accumulator model or Ratcliff's diffusion model (e.g. in R, MATLAB, or Python).
13
votes
4answers
564 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
3answers
381 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 ...
12
votes
6answers
2k 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 ...
12
votes
2answers
682 views

What tasks does Bayesian decision-making model poorly?

Bayesianism has been a relatively successful paradigm for modeling decision-making. However, not every psychologist is a bayesian, and there are tasks such as the Tversky & Shafir (1992) ...
11
votes
2answers
1k views

What was the experiment where you pour liquid from a tall container to a short one and ask a child which has more?

From Developmental psychology 101 I remember an experiment where the person conducting the experiment would pour liquid from a tall, narrow container into a short, narrow container and ask a child if ...
10
votes
1answer
467 views

What does “veridicality” mean in terms of psychology?

I'm reading the paper "Visual Space Perception and Visually Directed Action" by Loomis, Da Silva, Fujita and Fukusima (1992; pdf). In this paper, the word 'veridicality' is used in several sentences. ...
10
votes
0answers
141 views

Human behaviour in one-shot perfect information games

Background A one-shot game is one where two participants have some set of actions $\{1, ... , n\}$, they make their decision on which option to take (without knowing the decision of their partner, or ...
9
votes
3answers
1k 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 ...
9
votes
2answers
163 views

How do humans optimize noisy multi-variable functions in experimental settings?

Imagine an experiment like this: A participant is asked to optimize an unknown function (let's say minimize) . On each trial the participant provides several input values, and receives an output ...
8
votes
2answers
78 views

How can experimental compliance (willingness of participants to participate) be measured?

I would like to have a measure for how willing and eager participants were during an experiment. I have the intuition that their eagerness to comply will profoundly alter results of psychological and ...
8
votes
1answer
342 views

Is there a database of emotional stimuli available?

For my research I need to use emotional stimuli to use for habituation to certain emotion. Are there any databases available (preferably free or not expensive) of non-linguistic stimuli I could use? ...
8
votes
1answer
473 views

How to measure group differences incorporating reaction time / accuracy trade-off?

In a psychological experiment I am measuring subjects' reaction time as well as their error rate. Now I would like to compare two groups (males & females). There might be a bias in the sense that ...
8
votes
1answer
272 views

What is the test-retest improvement in Block Design test?

Background: My lab is conducting a research on perceptual training. We train participants on different tasks, and assess them pre- and post- training on a large battery of tests. Obviously, people ...
7
votes
2answers
416 views

How to assess participant awareness of experimental deception without inducing awareness?

I am designing a memory experiment with a deceptive critical trial, wherein an item is swapped without the participant's knowledge. What is the best way to determine if the participant has noticed ...
7
votes
2answers
78 views

Differences in willingness to correct errors made between human and computer interactions

I have a design where I present participants with a series of decisions, and then ask them about some of these decisions later. Similar work has found that even when the particular decision was made ...
7
votes
1answer
196 views

Is there a circadian component to mood variations in humans?

I'm looking at this question about an Experience Sampling Method (ESM) app: Longitudinal mobile mood tracking app with random reminders The studies linked in the question deal with sampling of user ...
6
votes
2answers
158 views

What does daytime actigraphy reveal about an active and awake brain?

I have interest in the study of human motion ( Actigraphy), and have built a couple of smartphone apps using its principles. The apps look at gross motor activity of an individual. Up until now, most ...
6
votes
2answers
76 views

What is the name of a test presenting words in different colors?

What's the name of this psychological test where you. Read and pronounce words in three colors (red, blue, green). - Words and colors match. - Say word and color (which are the same). As above - ...
6
votes
1answer
221 views

Measuring changes in hemispheric dominance over time

I've recently started using my trackball left-handed after being right-handed my whole life. The motivation is partly to balance out wrist strain, and partly to see how much my brain rejects the idea. ...
6
votes
1answer
141 views

Picture of eye promotes good behaviour

I remember a study about how a picture of an eye made people more well behaved. The experiment was in an unsupervised coffee room where there was a box where participants were expected to deposit ...
6
votes
1answer
138 views

Why do we use 3 channel R,G,B to represent color?

I read that there're some more colors which cannot be represented by R,G,B. What is the experiment that lead people to use 3 variables R,G,B? Can that experiment be replicated in other modals, such ...
6
votes
1answer
128 views

Controlling for response bias in a forced choice memory task

I want to present participants a pair of items $a$ and $b$, each with an association $x$ or $y$. Later on participants will presented with the items singularly, and asked 'what was the association?'. ...
6
votes
1answer
62 views

Accuracy of social judgements of observers watching business meetings

I'm very interested in how people size one another up in social situations and in particular what we key in on when we are making these judgements. Let's make an imaginary experiment. I make ...
6
votes
1answer
220 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 ...
6
votes
0answers
87 views

Are there any rules about masking?

I am currently programming an experiment where participants have to do a divided visual field task. In a paper about the correct methodology about these tasks, it is said that you should use a ...
6
votes
0answers
123 views

Advantage of active learning on classification tasks

I am looking for a specific type of experimental test of active learning. Given some artificial or natural learning task that consists of classifying inputs $x$ from a large input space $X$. There is ...
6
votes
0answers
93 views

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

I am planning on running an online psychological experiment where participants must learn about various simulated environments and then make inferences about them. Because completing the experiment ...
5
votes
2answers
386 views

Free software to run questionnaire based experiments

I am looking for free software to build experiments that do not heavily rely on accurate timing (where I use PsychoPy and heard a lot of good things about OpenSesame) but more on an easy way to ...
5
votes
2answers
167 views

Heart rate monitor for scientific study

I want to measure heart rate as part of a controlled experiment I am setting up. I've been trying to find information on which heart rate monitor to buy, but it's unclear to me which heart rate ...
5
votes
2answers
182 views

Minimum duration for presenting a visual stimulus on screen

My experiment involves presenting simple visual stimuli briefly on screen (200 ms to 1000 ms). The stimuli would be simple enough (e.g. a circle and a line) but I want to use a range of durations to ...
5
votes
1answer
124 views

Why does speaking with rhythm help a subject get into a trance?

Various hypnotism teachers tell you to speak with a relaxed voice with rhythm. You can see Derren Brown on this in The Experiment - The Assassin (from 4:48 to 5:40): Soft, rhythmical language, ...
5
votes
1answer
78 views

Is there a canonical reference for behavioral, attentional, and memory tests?

In researching another question, I read a few review articles that were testing behavioral and attentional variables in response to different sleep parameters. I was curious about some of these ...
5
votes
1answer
75 views

Does intoxication ever improve reaction time?

Background: As I write this I am rather "tipsy." I wanted to do some experiments and test my reaction time. I noticed that ironically, my reaction times were a lot quicker than when I am sober. Is ...
5
votes
1answer
107 views

Inferring relationships between psychological variables in clinical samples and issues in generalisation

Context I sometimes speak to researchers studying the relationship between variables in clinical psychology samples. A typical example is as follows: 100 patients with diagnosed depression many ...
5
votes
1answer
85 views

Source for standardized audio files for an experiment in German

I need some audio files for an experiment. In this experiment, numbers will be played to the subjects via headphones, so I need sound files with spoken numbers. Actually, a single file with a sequence ...
5
votes
0answers
37 views

What is the state of the art in computerised coding of Thematic Apperception Tests (TATs)?

Thematic Apperception Tests (TATs) involve showing test takers pictures and getting them to write stories based on the pictures. Coding such stories for themes and traits can be complex, ...
5
votes
0answers
129 views

Online datasets for the disjunction effect and violations of the sure-thing principle

The disjunction effect (or violation of the sure-thing principle) is as follows: A dis­junc­tion effect occurs when peo­ple pre­fer x over y when they know that event A obtains, and they also ...
4
votes
2answers
168 views

What is the primary mechanism behind nationalism, sports-team-ism, product-ism etc.?

I'm interested in doing research on the subject of nationalism, but I believe that what I'm looking for is more generic than that. I observe that nationalism looks similar to the way that people feel ...
4
votes
3answers
95 views

What are the mechanics behind the mind of a conspiracy theorist?

Conspiracy Theorists, in my opinion, are people I don't like except for some exceptions. However, this question will not be answered with my irrelevant opinions on said people.. Now, here is the ...
4
votes
2answers
61 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 ...
4
votes
1answer
62 views

What was the experiment where a person is given something and then has to share it with another person

Bob is given a bar of chocolate by the experimenter. Then he is to propose how he will share the chocolate with Emilly. If Emilly agrees with Bob's proposal, the kids will each get their share. If ...
4
votes
1answer
75 views

How can self-awareness be controlled and varied in a laboratory setting?

I was reading on deindividuation and its relation to self awareness. In many places, in the text that I am reading, it is mentioned that experiments were conducted to measure the effect of ...
4
votes
2answers
452 views

Is the Raspberry Pi capable of operating as a stimulus presentation system for experiments?

I'm outfitting a small behavioural lab with a fiscal-austerity-induced budget. I'm considering trying out a Raspberry pi for individual participant systems. My tentative plan is to run linux and code ...
4
votes
1answer
60 views

Why different responses to target and distractor in three-stimulus oddball procedure?

In the three-stimulus oddball procedure, there is an infrequent target in a background of frequently occurring standard stimuli and infrequently occurring distracter stimuli. My question is, since the ...
4
votes
1answer
193 views

How do you run a risk / gambling experiment using Qualtrics or Amazon Turk?

I want to run a simple probability matching gambling experiment: Each round has the participant pick Up or Down. The computer picks Up with a probability (p=0.7). If the participant gets it correct, ...