Science News

Men with more hair are more likely to be seen as a leader than men with bald or shaved heads

Men with more hair, compared to bald men or with completely shaved heads, would be preferred as leaders on a psychological level according to a new study conducted by researchers from the University of Otago. And not only that, men with more hair on their heads would also be considered more attractive, young, intelligent and healthy.

During an initial phase, the researchers carried out an experiment by making 634 people look at the photos of 31 men digitally modified in order to have a full head, a shaved head or natural baldness. The study participants, after seeing the photo, then had to evaluate their perceptions based on seven traits: age, leadership, masculinity, domination, attractiveness, health and intelligence.

In a second and third phase, the same photos were then shown to hundreds of other participants and the latter were instead asked to evaluate their preference in terms of leaders also according to various contexts, such as in times of peace or in times of war.

“We were interested to see if a leader’s simple decision to shave his head would change the way followers perceive them and subsequently approve of them as leaders,” says Nancy Blaker, one of the researchers engaged in the study according to which the appearance physique is still very important to have more chance of success in leadership.

The results showed that men with shaved heads were perceived as more dominant. Naturally bald ones were perceived as older. In addition, men with shaved or naturally bald heads were considered more masculine than men with full hair. However, the latter were perceived as healthier and more attractive. Finally, men with more hair were chosen as their favorite leaders.

“We thought that the dominant-looking shaved head would give them a preference boost during the conflict, but instead gave them a penalty during peace,” the researcher says. “In addition, we found in the two studies on the voting paradigm that full-haired heads were generally more preferred as leaders, regardless of context, since previous studies had found no general preference. This is probably due to a greater perception of attractiveness and health towards full hair heads compared to shaved heads and bald heads.”

See also this 2015 article from business insider: bald men signals dominance.

Science News

What You Need To Know About Four Sigmatic

Is Four Sigmatic for real, or is it BS? That’s the question that the editors at have answered in this excellent review of Four Sigmatic. Here’s the conclusion: there’s plenty of scientific evidence that Four Sigmatic can be good for your body, but there’s still plenty more work to be done. In fact, there’s yet to be a real independent study on Four Sigmatic, and in any case, it can’t be considered any kind of magic bullet.

Four Sigmatic’s main product, and best-seller, is their “mushroom coffee” which was fairly well received. According to the review linked above, it’s a great tasting coffee.

One of the interesting things about Four Sigmatic is that it was recommended by Tim Ferriss, and that’s probably what got the company off the ground. That, along with their fancy marketing around “superfoods”.

Science News

Double-core galaxy discovered 30 million light years away

According to a team of astronomers who published a new study in the Astrophysical Journal, the Galaxy NGC 4490, also nicknamed “Cocoon Galaxy” for its unique shape, boasts a “dual core” structure.

One core can be visually intercepted at different wavelengths while the other can only be seen in infrared or radio wavelengths. The galaxy NGC 4490 interacts gravitationally with a smaller galaxy, NGC 4485. This “binary system” boasts approximately 20% of the size of the entire Milky Way and is located approximately 30 million light away from us.

Allen Lawrence, the study’s first author and researcher at Iowa State University, says he noticed this double core as early as seven years ago, something that had never been observed before. According to the researcher, both nuclei have more or less the same size, the same mass and the same level of brightness.

Furthermore, this double nucleus would also explain why this galactic system is surrounded by an equally unusual hydrogen plume: “The simplest interpretation of the observations is that NGC 4490 is itself an advanced melting residue.” This merger would have occurred in the past following a collision between two galaxies.

In general, double-core galaxies are very rare. Multiple supermassive black holes are thought to be at the center of these systems.