Josh de Leeuw
  • Member for 7 years, 9 months
  • Last seen more than a week ago
Can the mind affect the physical brain? - a simple thought experiment
18 votes

The short answer is no, this doesn't violate the law of cause and effect because the mind itself is a physical entity. Your thought experiment hinges on the debate of materialism (the mind is a ...

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Folding (wrinkles) in cortex: Why is surface area more important than volume?
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15 votes

The key point is that the brain is not a uniform structure. The outer layer, known as grey matter, is a relatively uniform and flat structure. Underneath the grey matter is white matter. An overly-...

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How can we scientifically measure love?
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14 votes

One way to measure love is to look at behaviors that people engage in to express love. Chapman (1995) theorized that there were five broad classes of behaviors that people would engage in to express ...

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

For an open source JavaScript/HTML/CSS solution, check out jsPsych. It can be used for reaction time measurement and interactive designs. An article describing the library was recently published in ...

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Can hypnosis stop cigarette smoking?
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12 votes

Green and Lynn (2000) conducted a meta analysis of 59 experiments investigating the efficacy of hypnosis on smoking cessation. Their conclusions were: There is mixed, inconclusive evidence for ...

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What research has been done on brain-to-brain interfaces?
10 votes

Rao et al. 2014 claims to be the first demonstration of a brain-brain interface in humans, using EEG and TMS. Abstract We describe the first direct brain-to-brain interface in humans and present ...

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Does classical music enhance intelligence in children more than other genres?
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10 votes

A great overview of this topic is available in Chapter 6 of the book The Invisible Gorilla by Chabris & Simons. My answer is based, in large part, on their summary of the topic. The "Mozart ...

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Calculating d-prime
9 votes

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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Why might a person get widely varying scores on different online IQ tests?
9 votes

Firmin et al. (2008) tested the validity of a handful of online IQ tests by having college students complete IQ tests at three different websites and also complete a validated lab measure, the ...

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432 Hz vs. 440 Hz frequencies: health and psychological effects?
9 votes

One of the claims that is somewhat easy to validate empirically is that "432 Hz sounds better than 440 Hz." This informal experiment tests this in a straightforward way. People listen to pitch-shifted ...

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Why do we always wake up at the climax of our dreams, even when it is an alarm that wakes us?
8 votes

There are two possibilities. One is that we do tend to wake up more at the climax of dreams, and that somehow our dreams can sync up with external input like an alarm clock so that the climax of the ...

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What is the name of the scientific study of hypothesis formation?
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8 votes

One umbrella term is causal reasoning, though this is a bit broader since there are theories of causal reasoning that are not about hypothesis testing. A Google Scholar search for "causal reasoning ...

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What is the difference between Megalomania and Narcissism?
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8 votes

The DSM (Diagnostic and Statistical Manual of Mental Disorders) doesn't distinguish between megalomania and narcissism. The most recent edition of the DSM (DSM-5) classifies both as a form of ...

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Does your voice pitch affect your perceived authority?
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8 votes

There's quite a bit of research related to this topic: Male CEOs with deeper voices make more money and manage larger companies (Mayew et al., 2013). People are more likely to say they would vote ...

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How valid are reaction times collected from online studies?
7 votes

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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Questionnaire regarding the motivation to be physically active
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7 votes

David Markland's website has several related questionnaires and scales that are available for research use. The Behavioural Regulation in Exercise Questionnaire seems like a good fit: The Behavioural ...

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Are all psychological problems only biochemical in nature?
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7 votes

At some level, it's true that psychology reduces to biology and chemistry. If it didn't, then the widely-accepted view of physicialism/materialism would be wrong. But just because psychology can (in ...

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Why is the order of brainwaves not labelled "alphabetically"?
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7 votes

They are ordered based on when they were discovered/named (as pointed about by Ana's comment). Alpha and beta waves were among the first signals observed in EEG data. From Wikipedia: Alpha waves ...

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Is art therapy really effective?
7 votes

Slayton, D'Archer, and Kaplan (2010) review 35 studies conducted from 1999-2007 about the efficacy of Art Therapy. Their review covers a variety of quantitative designs, as well as a few qualitative ...

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How does glial cell activity influence fMRI, EEG signals?
7 votes

I'm only going to attempt to answer a small part of your question: how does glial activation affect the blood oxygen level-dependent (BOLD) response measured by fMRI? Schulz et al. (2012) were able ...

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Dynamical systems theory as a metaphor in psychology: is it useful or not?
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7 votes

Like all models and modeling frameworks, the utility of the approach is often tied to how much it increases our understanding of the phenomena of interest. As summarized nicely by Smith & Thelen (...

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Where can I find online interactive versions of classic experiments in psychology for the purposes of teaching?
6 votes

List presented alphabetically Cambridge Brain Sciences (cambridgebrainsciences.com) Several "brain-training" type experiments including span tasks, mental rotation, and paired associate memory. Some ...

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What are the effects of casual sex on men versus women?
6 votes

One factor that should be considered is the culture surrounding casual sex and the social judgments that men and women may experience as a result of casual sex. Conley, Ziegler, and Moors (2012) ...

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Name of cognitive bias when you diminish one's competency based on someone else's for the same function?
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6 votes

The broad topic is norm theory. Kahnemann & Miller (1986) give a nice overview of the topic. The specific effect is a contrast effect. Higgins & Lurie (1983) have an experiment which matches ...

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What is the difference between "double dissociation" and simply having control and experimental groups?
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6 votes

In brain damage/lesion studies, a double dissociation gives evidence that function A and B are, to some degree, implemented in different regions of the brain. In general, a double dissociation shows ...

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Is there a difference between hearing and decoding the sound?
6 votes

It is well documented that people are able to selectively attend to different speakers. The ability to tune-in to a particular speaker and filter out others was dubbed the cocktail party effect, since ...

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Are recent affordable EEG devices any good?
6 votes

The Emotiv system has been evaluated in a research setting. Badcock et al. (2013) recorded EEG activity with the Emotiv EPOC and a more conventional laboratory system simultaneously, and found that ...

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Why do long range axons in mammals travel in white matter tracts?
6 votes

Wen & Chklovskii (2005) looked at exactly this question through a simulation study. They assumed that the segregation of white and gray matter was the the result of evolutionary pressure to ...

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How to begin neural network Programming
5 votes

A google search for neural network library will return many relevant pages, with neural network libraries written in several programming languages. You could also look for tutorials on programming ...

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If a human brain would be placed inside that of an animal: Could it talk?
5 votes

Part of what makes speech possible is a complex set of interactions between a number of different muscles that control aspects of producing speech sounds like airflow and mouth shape. Humans are ...

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