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23 votes
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Is monogamy a human innate behaviour?

Humans are believed to be mostly serial monogamists with a noticeable components of secret cheating. Serial monogamy means most will have a single partner at a time but will likely have several ...
John's user avatar
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20 votes
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Why do humans suffer anxiety when they view "Trypophobia trigger images"?

Trypophobia is not a recognised specific anxiety disorder (Washington Post). It is worth mentioning that anyone can have a phobia to anything, this is merely a question of whether many people ...
James's user avatar
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13 votes

Is monogamy a human innate behaviour?

The easy answer is simply, no. The longer answer is that it depends on whatever cultural norms that are practiced in a given area at a certain time. Often powerful men in history had multiple ...
Jeppe Nielsen's user avatar
12 votes

Why do humans suffer anxiety when they view "Trypophobia trigger images"?

As someone who is very disgusted by this kind of image, I think it is a caused by an association with maladies like burns, infections, and especially parasites. It is difficult for me to even describe ...
Paul S's user avatar
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9 votes
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Do birds grieve and feel emotion?

Your "grieving bird" is a video of a peregrine falcon (Falco peregrinus) and its (nearly?) dead chick on a hot summer day in Phoenix, Arizona (USA) in 2016. Photo credit: Arizona Game And ...
theforestecologist's user avatar
7 votes
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What is the motivation behind fluorinated pharmaceuticals?

Fluorine has a combination of unique chemical properties, which makes it very useful in drug design : It is small, such that replacing a C-H with a C-F is often possible, from a sterical point of ...
Eliane B.'s user avatar
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6 votes

Does the brain consume more energy when a person is stressed or anxious

The tiredness associated with depression/stress is not due to the 'brain power' increasing but due to a change in what parts of the brain are active and/or disrupted sleep. Anxiety can cause issues to ...
PlantPromoter's user avatar
6 votes
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Why do wild animals not eat in captivity?

Many wild animals will not eat in captivity because they are under stress, few mammals react well to captivity. weird smells and sounds, restricted movement, inability to hide, there are dozens of ...
John's user avatar
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5 votes
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Why do bad smells make us vomit?

It is not really making you vomit not directly, it is making you nauseous if you become too nauseous you vomit.(nausea has multiple triggers but for this I will stick to smell) Nausea exist to keep ...
John's user avatar
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5 votes
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Do other young mammals turn their backs to their parent when upset?

Other Primates Sulking is the behavior you are refering to and it is seen in orangutan, Chimp and Bonobo. Likely in other primates but I am not aware of any published works. I have heard about it in ...
John's user avatar
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5 votes

Animal models to study depression

TL:DR: A simple question doesn't usually have a simple answer in science. To a great extent, the answer to your question depends on what, exactly, you mean by non-invasive. Please know that it is ...
anongoodnurse's user avatar
4 votes

Is every decision we make already "pre-programmed" because of DNA?

"Do we have free will?" It's a big question. DNA (among other epigenetic factors) code for proteins, so ultimately it determine our cells, which in turn are responsible for our neurology, ...
James's user avatar
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4 votes
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Why are animals afraid of the vet?

Most animals are not afraid of the vet. When I was in practice, many dogs and cats waltzed in perfectly happily. Of those that were afraid, I presume that many picked up expectations from their ...
iayork's user avatar
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4 votes
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Which of the response is faster? voice or hand action?

Assuming that we are talking about a situation at the physical limit of the brain: Speaking a word will always be slower than pushing a button. A whole word requires a contraction of the diaphragm to ...
nico's user avatar
  • 240
4 votes
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Why do I feel my schoolbag to be heavier after meals?

Could certainly be physiological. After eating more blood is diverted towards the smooth muscles around organs for digestion. This will mean your skeletel muscles have decreased blood flow so less ...
user33342's user avatar
4 votes
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Why do living things go belly up as they die?

limbs are light weight compared to bodies, if you knock an animal around (and it has no active correction AKA is not alive) it will tend to end up on its back just due to where its center of gravity ...
John's user avatar
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3 votes

Is monogamy a human innate behaviour?

No, they are not. Polygyny, polyandry and group marriage are, or have been, practiced in various cultures. Polyamory and other forms of non-monogamy are practiced. There are estimates that four to ...
DevSolar's user avatar
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3 votes
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Why do scary situations make our skin crawl? Why do we have goosebumps in such situations?

Goose bumps are based on a pilomotor reflex where tiny muscles at the base of hair follicles contract, which leads to the "bumps" and also raises the hair in the follicle. It's often explained as a ...
Stephie's user avatar
  • 228
3 votes

Is monogamy a human innate behaviour?

I just read a book on the Evolution of Sex and one of the questions was why primates have lost the estrous cycle. The thought was that the sexual desire of the female anytime rather then periodically ...
walt's user avatar
  • 27
3 votes

Is every decision we make already "pre-programmed" because of DNA?

Is every decision we make already pre-programmed because of DNA? No! An obvious way to realize this is to compare identical twins. While two randomly chosen twins ressemble each other (in terms of ...
Remi.b's user avatar
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3 votes

Do men have more extreme variations than women?

So far as we can tell any difference in variability (standard deviation) in humans is cultural not genetic and thus not consistent across the species. You are talking about something called the ...
John's user avatar
  • 14.7k
3 votes
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How do we share pain?

There has been a study by Jackson, Meltzoff & Decety (2005) who investigated the neurocorrelates involved in the perception of pain. In order to assess this, they carried out an fMRI study in ...
Ebbinghaus's user avatar
  • 2,603
3 votes

Predictive Single Nucleotide Polymorphisms (SNPs) for Bipolar Disorder

Yes, there have been a variety of studies that do association analysis of variants with bipolar disorder. Here is a recent one that validated 11-30 variants depending on how you count. However, in ...
Maximilian Press's user avatar
3 votes

Is cruelty a human instinct?

It sounds like a philosophical question, but it also has evolutionary roots. All species are instinctually selfish, in that there is a drive to move their genes into the next generation. So ...
Karl Kjer's user avatar
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3 votes
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What's the evolutionary reason behind feeling 'sorrow'?

I‘ll answer from a perspective I‘ve been studying in Psychology, but can‘t provide sources. If this is not within the scope of this SE, I‘d kindly ask to either add appropriate sources to my answer or ...
michi's user avatar
  • 146
2 votes

Do animals suffer from "Human" mental disorders?

I know of at least one case, some social primates develop maladaptive behaviors similar to sociopathy if raised in isolation without the social contact with others of their species as they grow up. It ...
John's user avatar
  • 14.7k
2 votes

Why do we like music?

DISCLAIMER: Usually I do research before I write. But the factual basis on this topic are pretty... meh.. So this time it was the other way around. So take note that the arguments here are just ideas. ...
markur's user avatar
  • 1,779
2 votes

Why do people feel shame when exposed nakedly?

Probably a cultural effect In many tribes, people are naked. Also, the naturist movement is very popular in the western culture and they don't feel shame. In northern Europe, it is common to be naked ...
Remi.b's user avatar
  • 68.2k
2 votes

Why do humans suffer anxiety when they view "Trypophobia trigger images"?

The "That's Odd" feeling is real. And now I understand the term "trypophobia" as a specific example of a more general aversion response which seems common in nature, and might even be hard-wired in ...
gemesyscanada's user avatar
2 votes

Is every decision we make already "pre-programmed" because of DNA?

As Remi already explained, there can be phenotypic variations even if the genotype is the same. This is applicable in a broad sense. I'll focus on your query on decision making. DNA does encode the ...
WYSIWYG's user avatar
  • 35.6k

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