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2
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0answers
60 views

Is only 1-2% of the population in Myers-Briggs' INTJ category?

INTJs are one of the rarest of the sixteen psychological types and account for approximately 1-2% of the population Wikipedia claims that the INTJ personality type (as defined by the Myers-Briggs ...
1
vote
0answers
156 views

How effective is guarana for cognitive enhancement?

Borrowing from one of only two studies (1,2) I found on guarana: Extracts from the plant guarana (Paullinia cupana) feature as putatively stimulating ingredients in a number of foods, drinks and ...
4
votes
1answer
316 views

Can you generally learn any skill, noticeably well, with 20 hours practice? [closed]

I recently watch Josh Kaufman's TEDxCSU talk about his new book, The First 20 Hours. Although his idea sounds reasonable, I coudn't find any mention of scientific research to back it up. I know some ...
5
votes
0answers
111 views

Has Dean Radin's Love study been independently confirmed by three dozen groups?

This NPR article from 2009 states that Dean Radin conducted a Love study that claimed to show a scientifically meaningful correlation between a husband thinking about a wife and her sensing it within ...
1
vote
0answers
60 views

Is Gallup's Clifton StrengthsFinder able to identify the strengths of an individual?

On their website Gallup claim that their Clifton StrengthsFinder test is able to accurately identify personal strengths. I am skeptical of this method because the test itself simply asks people how ...
6
votes
0answers
203 views

Can sighted people learn to read braille by touch at a level comparable to blind individuals?

I've been told by a friend who works at a school for the blind that no sighted person has ever learned to read braille by touch at the level that is comparable to a literate blind person. Is this ...
1
vote
1answer
188 views

Is mentally practicing a skill more effective than physically practicing?

I saw this video in which Tony Robbins claims practicing mentally can be more effective than practicing physically. He refers to a study where basketball players struggling with free throws were ...
7
votes
2answers
349 views

Do those hearing for the first time via cochlear implants understand speech immediately?

This touching video shows a woman's reaction to her cochlear implants. It seems to me amazing that someone hearing for the first time would be able to understand the signal (speech) so well and even ...
6
votes
2answers
423 views

Can eating sugar result in addiction?

I am surprised to see this video on TED claiming that sugar can lead to addiction (differently from other kinds of food, for example broccoli). So, yes, over-consumption of sugar can have ...
11
votes
0answers
1k views

Is spelling (orthography) correlated with adult intelligence?

I been told that spelling ability (good orthography) is correlated with intelligence (which is a nice way to say: if you are bad with orthography, you are stupid). So far I have been unable to find a ...
18
votes
1answer
4k views

Does Lumosity increase your intelligence?

Lumosity is a popular website that claims to help you become a more intellectually capable individual. Harness your brain's neuroplasticity and train your way to a brighter life" Is it truly ...
6
votes
0answers
586 views

Does juggling increase gray matter/size of the occipito-temporal cortex?

I have been led to believe by expert testimonies that juggling may lead to an increase in brain depth and size. At the moment I am not able to draw on much evidence. If this is a myth, I would ...
5
votes
1answer
1k views

Does positive thinking have any effect? [closed]

I found this while reading about the 'Law of Attraction' Whether or not you believe in the power of the universe, there is scientific research that proves the effects of positive thinking. Is ...
27
votes
3answers
7k views

Does a -9 dB room cause hallucinations?

Does being in an anechoic chamber cause hallucinations? According to several blogs (that likely copy each other), it does. The Orfield Laboratory in Minneapolis–Saint Paul, Minnesota, United States is ...
6
votes
2answers
623 views

Does listening to complaints damage your neurons?

I read this old news today as it's gone viral in Italy: That pain you feel listening to complainers? It's real enough to peel away neurons from your brain and render it pretty much useless, ...
18
votes
2answers
932 views

Do higher mathematical abilities inversely correlate with good communication skills?

There is a persistent stereotype that geeks (let's formally define that as people a couple of standard deviations better than average in math, computers or other related abilities) as a whole have ...