Mixed-sex interactions may harm thinking.

By |2017-04-28T07:36:07+00:00April 28th, 2017|Categories: Productivity, Relationships|Tags: , , |

Researchers performed two studies. In the first, participants interacted either with a same-sex or opposite-sex partner. Results showed that men’s cognitive performance declined from a mixed-sex encounter, but this wasn’t true for women.

Interacting with women can impair men’s cognitive functioning; Johan C. Karremans; Journal of Experimental Social Psychology; Volume 45, Issue 4, July 2009, Pages 1041–1044


Intelligence is connected with sperm quality

By |2017-04-10T15:04:10+00:00April 10th, 2017|Categories: Healthy|Tags: , |

Researchers found correlations between intelligence and sperm concentration, sperm count, and sperm motility. The sample consisted of 405 U.S. Army Veterans. Scientists took notice of age, body mass index, days of sexual abstinence, service in Vietnam, or use of alcohol or drugs.

Rosalind Arden, Linda Gottfredson, Intelligence and Semen Quality are Positively Correlated, Intelligence 37(3):277-282 · May 2009, DOI: 10.1016/j.intell.2008.11.001



Intelligent men are always attractive

By |2017-04-08T05:21:44+00:00April 8th, 2017|Categories: Relationships|Tags: , |

A group of 204 women were evaluated based on the long- and short-term appeal of videos of 15 men. They had a known level of intelligence and physical features.

Findings say that women look for geniuses for both one-night stands and for long-term relationships.

However, other studies suggest that women don’t care about the brain for short-term relationships.

Prokosch, Mark D. et al.; Intelligence and mate choice: intelligent men are always appealing; Evolution and Human Behavior , Volume 30 , Issue 1 , 11 – 20


An experiment proved that whether we are happy or not with our appearance affected our intellectual functioning.

By |2017-04-02T03:29:54+00:00April 2nd, 2017|Categories: Personal Success|Tags: , , |


A study of approx. 390 participants showed that those who feel better about their body (wearing sweaters) performed better on math tests.

The second group tested swimsuits.

Hebl, M., King, E., & Lin, J. (2004). The swimsuit becomes us all: Ethnicity, gender, and vulnerability to self-objectification. Personality and Social Psychology Bulletin.


Mom’s high blood pressure lowered child’s IQ by 4.36 points and for math ability.

By |2017-03-14T23:44:12+00:00March 14th, 2017|Categories: Healthy, Personal Success|Tags: , , |

Researchers looked at the medical records for mothers’ blood pressure during pregnancy. They checked 398 men. They tested their abilities at age 20 and again at age 69. The tests checked language skills, math reasoning, and visual and spatial relationships.

It turned out that those men whose mothers had high blood pressure while pregnant scored 4.36 points lower on thinking ability tests. The group also scored lower at the age of 20 and had a greater decline in their scores over the decades. The finding was strongest for math-related reasoning.

Soile Tuovinen, Katri Räikkönen, Eero Kajantie, Markus Henriksson, Jukka T. Leskinen, Anu-Katriina,…; Hypertensive disorders in pregnancy and cognitive decline in the offspring up to old age; Neurology, October 9, 2012 vol. 79 no. 15 1578-1582


Latitude is correlated with IQ and height.

By |2017-03-01T04:34:58+00:00February 28th, 2017|Categories: Interesting Facts|Tags: , |

The Japanese average IQ has been estimated to be 104. It is slightly lower than the Chinese and Korean averages.
The the highest IQ, in prefecture Akita, had 107 while the one with the lowest (Okinawa) had 96. This is surprising in that it challenges the much-touted homogeneity of Japanese people.
Further, people living in the northern part of Japan are taller, more intelligent and less crime prone. They divorce less often, have lower fertility.
Skin whiteness is positively correlated with latitude and also with IQ, and their correlation is almost the same.
And we can calculate that 1 IQ point raises average income by 2.5%.

Kenya Kura; Japanese north–south gradient in IQ predicts differences in stature, skin color, income, and homicide rate; Volume 41, Issue 5, September–October 2013, Pages 512–516