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14

In the general population there does seem to be a positive correlation between psychometrically measured intelligence and observer rated attractiveness (Kanazawa, 2011). The power of the relationship seems to be medium to low. Two possible explanations for this relationship are: Intelligence and physical attractiveness both depend on physical health; ...


8

The reptilian brain is the oldest part of the triune brain. And the triune brain is a unified account of brain function and brain evolution. The story goes like this. The brain can be divided into three sections: The reptilian brain, named so because it encompasses structures that did not change much from reptile to man. It includes the basal ganglia and ...


6

With regard to your first question about the pschological processes of interpersonal attraction there are (at least) 4 factors that have been found in the social psychology literature. Contextual Aspects. People are more likely to develop attraction towards those they see more frequently than others. This is known as the Mere Exposure Effect (Saegert, ...


5

Iguanas are not carnivores. Look at it historically: we have had useful animals around us for thousands of years: dogs to help hunting, cats to keep vermin away. Other non-carnivorous pets was at some point - and still are - domesticated for food (rabbits, guinea pigs). Pigs are a gray area: they will pretty much eat anything, meat included. Then you ...


5

If non-human animals do have intelligence too, why is their intelligence not as advanced as humans? Notions like “advanced” or “better” really have no place in evolutionary thinking. Again, evolutionary fitness is about self-reproduction and success compared to whatever competition is present at any moment. There is no force “optimizing” species to meet ...


5

Let's first be clear that we didn't evolve from monkeys/apes/etc. That's a common misconception. Evolution states that we and monkeys/apes/etc. evolved from a common ancestor. Same with fish. If you go back far enough, we and fish share a common ancestor... we did not, however, evolve from today's Salmon or Macaque. That being said, the origin of ...


4

Neurobiology and Evolution are not exactly my field of expertise, but I'll try to answer anyway. Are there any neurotransmitters that appeared only in human evolution history? Probably not. The common human neurotransmitters we know of, are also found in other animals. More surprisingly, most of them are also found in organisms with no nervous-system, ...


4

The first question is, what is normal human sexual behavior. The answer to this changes over time. For example, a hundred years ago masturbation was thought to cause physical degeneration and be a sin, today it is perceived as healthy, even recommended. Research shows that adolescent girls who masturbate have more and stronger orgasms as adults. So, if anal ...


3

My answer to this question would be pretty straightforward. From a neurobiological standpoint, sex causes the release of various pair-bonding influencing hormones oxytocin, vasopressin and dopamine. These "feel good" hormones promote bonding and basically encourage the couple to stay together. The more the pair have sex, the more these hormones get ...


3

I think the treatment of the “Reptile Brain's” power given by Big Bang really sells it short. Your question immediately brought to my mind a 2009 profile by the Washington Post's Gene Weingarten of parents who leave their children in the car to die, all by accident. It's a long and difficult read, and it took me quite some time to dig it up again since I ...


3

In my experience, physical trumps all. Even if you're blind, there is still smell. I saw a show (The Science of Sex Appeal) which documented an experiment where a group of men wore t-shirts while getting sweaty on treadmills. Once the garments were nice n nasty, they put them in jars and had women rate how turned on or off they were by smelling each jar. ...


3

Furthermore the feelings caused by the "nails on a chalkboard" sound do not at all trigger a fight-or-flight response or put me on edge as a loud noise or something that startles me does. If anything it is almost paralyzing, which seems counter to the evolutionary theory. Yes, I agree, it seems to, however what about the fainting goats? We could have ...


2

Not a real explanation of why writing or cities appeared where they appeared but by that time humans had already spread to many parts of the world so I am not sure there is any particular need to explain why they did not appear in southern Africa, specifically. Also, the “cradle of humankind” in Gauteng is a large source of hominin fossils (possibly for ...


2

What is the difference in the brains for animals capable of these great differences in sexual activity and what part of the brain is responsible for this? In my opinion is a matter of creativity and curiosity. Evolved species try to interact with their ambient in unusual ways, testing different approach to the same "problem" not only to satisfy ...


1

There are two very broad domains of theory that commonly address the double standard regarding promiscuity. Haven't got the time to lay it all out at the moment (would be happy to edit later to elaborate if you like; just comment on what aspects you'd like expanded!), but as you suspected, both biological and social factors pertain in ways that are essential ...


1

I don't understand why there's a bias to assuming that something that doesn't actually touch us can't cause pain. I assure you: the sound that Styrofoam makes is enormously painful to me. (And I grew up in the egg business, where I would have to plug my ears on a daily basis when my father or someone else had to do something with Styrofoam cartons. Ugh.) We ...


1

In my opinion the question is not of-topic, because of two reasons: 1) Scientifically, it is hard to approve or not, but Sigmund Freud wrote about it in book: Totem and Taboo wrote that civilization start when human offsprings decided not to kill father and that strongest among them become new "leadeor of herd/doggery" It could explain debate cradle of ...


1

Your own theory is bad because it seems to follow from a Lamarkian interpretation of evolutionary theory. In Lamarck's idea, a crab's offspring will have the genes bigger claws if the crab exercises his own claws a lot before giving birth. In the same way, you're suggesting that the way ancient human diets improve their mental health somehow led to this ...


1

In chimpz, we see stronger chimps beating up weaker chimps that have consensual sex. Basically sex is not a purely consensual matter among chimps. It's to the best interest of stronger males to prohibit weaker males from entering mating market especially if the weaker males are more attractive. In gorilla, sex is not about consent at all. The stronger ...



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