Why isn't Psychopathy/Sociopathy in the DSM-5? |
- Why isn't Psychopathy/Sociopathy in the DSM-5?
- Why does rust not occur on stainless steel?
- Do animals have different "names" for their offspring the way humans do?
- Was the eruption of Krakatoa really heard ~3000 miles away?
- How does visual stimuli get stored in genes and subsequently expressed in the brain? (For example, the innate fear of spiders, &/or possible sexual stimuli.)
- Can birds control yaw? If so, how?
- What is information in the context of Physics?
- Do protons and electrons orbit around a barycenter? Like gravitationally attracting bodies? Or does the electron strictly orbit the centre of a proton?
- Why does salt decrease the specific heat capcity of water?
- Is sound effected by gravity?
- What body parts can be donated by a typical dead person?
- Why do acetylene torches pop when they are shut off?
- How dangerous is nuclear waste compared to coal and other forms of energy like renewable sources?
- Why does the height of so many intraplate volcanic centers reach so close to sea-level?
- Why does cheese break or crumble when it's cold, but gets long and stringy when it's warm?
- what does a weak force do to a lepton and a hadron?
- Is there any evidence that recent (last 10,000 years) human activity has altered our eye physiology through evolution?
- How did satellites impact the field of meteorology when they were invented?
| Why isn't Psychopathy/Sociopathy in the DSM-5? Posted: 29 Oct 2018 10:20 AM PDT Although the DSM-5 has "Antisocial Personality Disorder", this seems to be much more based on the impulsive criminal behavior clinicians come across in the criminal population and disregards the functional psychopaths and sociopaths in society. People with Dependent Personality Disorder and Narcissistic Personality Disorder (for example) can also be fully functional in society, yet they get the "benefit" of a diagnosis. So why has Psychopathy/Sociopathy been dismissed? EDIT: lots of interesting information, but very little actually addresses my question directly. EDIT 2: iglet007 gives a great answer. Read it. [link] [comments]  |
| Why does rust not occur on stainless steel? Posted: 30 Oct 2018 02:29 AM PDT |
| Do animals have different "names" for their offspring the way humans do? Posted: 29 Oct 2018 05:06 AM PDT Intuitively, it seems like it would be helpful for many mammals (e.g. lions, bears, dogs) and even some birds to be able to tell their offspring apart, in order to attend to each one's unique needs. [link] [comments]  |
| Was the eruption of Krakatoa really heard ~3000 miles away? Posted: 29 Oct 2018 10:16 PM PDT The 1883 eruption of Krakatoa was noted to be heard up to 3000 miles away and sound waves circled the earth four times. However, this paper suggests the eruption was ~180 decibels, which while deafening, is not much higher than being near a jet engine (noted in the same paper), and is less than what was estimated for the Saturn V launch at around 200 dB. Is this due to a sustained output of sound from the eruption, or do I really not understand sound as well as I think I do? [link] [comments]  |
| Posted: 29 Oct 2018 02:59 PM PDT I'm talking about things like innate fear of spiders: https://news.nationalgeographic.com/2017/10/infant-fear-phobia-science-snakes-video-spd/ This only seems possible if the brain has "preprogrammed software." Its seems like an image of a spider (or a visual form) has to exist in the mind at birth. It sounds like a memory has gotten passed down from a previous generation. But that is a Lamarckian idea which is generally debunked. How does a gene encode a visual stimuli? Let's say memory cannot be passed down. This would mean there are genes that produce innate fear in random visual stimuli, and the spider-looking-stimuli so happened to get evolutionary selected? i) That seems statistically unlikely. ii) It seems to imply that we would have a storage of innate fears for other random stimuli. We do not have such a storage. I am also curious if sexual visual stimuli is innate (and expressed at puberty.) I am also curious how the brain determines what defining characteristic of a vision is the necessary threshold to trigger fear or desire. [link] [comments]  |
| Can birds control yaw? If so, how? Posted: 30 Oct 2018 02:38 AM PDT |
| What is information in the context of Physics? Posted: 30 Oct 2018 06:19 AM PDT My question is: is information considered a physical property of the Universe or of it's objects in a modern Physics setting? If so, what is the definition of information, and how does it relate to other properties? Context: I've seen information (measured in bits) come up in some Physics discussions and articles in Wikipedia. For example: the Maxwel's Devil thought experiment seems to lead to a situation where the 2nd Law of Thermodynamics is disrespected, until you consider that adquiring information about a system requires spending of energy. That is reasonable, but the amount of energy to information is calculated. How can this be? Also, I've seen information being brought up in discussions about black holes, but that subject is way beyond my league. I think I have an ok qualitative understanding of modern Physics, but a small and vague quantitative (math) understanding. So maybe this question doesn't even make sense, or maybe the answer can only be understood with a lot of math. I'm sorry if that's the case. [link] [comments]  |
| Posted: 29 Oct 2018 07:13 PM PDT I suppose in atoms other than H and He, the increase in the number of electrons at different places would nullify the barycenter thing. But what about when there is only 1 proton and electron(like in Hydrogen and Helium)? [link] [comments]  |
| Why does salt decrease the specific heat capcity of water? Posted: 29 Oct 2018 10:30 PM PDT As such, how is specific heat capacity and cooling rate related? [link] [comments]  |
| Posted: 29 Oct 2018 07:38 PM PDT For example that TIL on the front page states that a volcanic eruption in the 1880s could be heard 3,000 miles away and traveled around the world 4 times. This leads me to visualize the sound waves traveling across the earth much like the aftershock of a nuke. Is this a poor visualization? [link] [comments]  |
| What body parts can be donated by a typical dead person? Posted: 29 Oct 2018 11:27 AM PDT People are encouraged to become organ donors when they die, but it's my understanding that actual organs(heart, liver, kidneys etc) can only be harvested from brain-dead people whose bodies are kept alive on life support. What about ordinary dead bodies? What all can be harvested and used? [link] [comments]  |
| Why do acetylene torches pop when they are shut off? Posted: 29 Oct 2018 07:30 PM PDT So I've recently gotten into metal working and one thing that I've wondered about is why do the acetylene torches pop? They pop when they're shut off (acetylene valve closed first) and sometimes when the torch head is too close to the material. I don't really know why this happens, but I have a theory. The gas that is left if the air is burned rapidly leaving a vacuum where the gas was. But I haven't been able to confirm or deny. [link] [comments]  |
| How dangerous is nuclear waste compared to coal and other forms of energy like renewable sources? Posted: 29 Oct 2018 10:29 AM PDT Comparing the health & environmental impacts out of curiosity. Is the public fear of nuke waste misplaced? And what are the efficiencies of the different types of energy sources? [link] [comments]  |
| Why does the height of so many intraplate volcanic centers reach so close to sea-level? Posted: 29 Oct 2018 12:03 PM PDT I'm not referring to atoll construction, which allows the top of these structures to remain near sea-level despite erosion and other processes ... the top of these volcanic edifices has to reach the photic zone first. Many reach the photic zone without eroding away "en route", while msintaining a steep gradient and rising from the abyssal plain about 3 kms. How is it that volcanic activity allows to build these structures up to that height in the first place? Is it just that a bunch of geophysical and geochemical parameters just happened to fall in the right range for that combination to make it so, or is there something else at work here I might be missing? And of course, this only applies to oceanic plates. Continental plates are a different world. [link] [comments]  |
| Why does cheese break or crumble when it's cold, but gets long and stringy when it's warm? Posted: 29 Oct 2018 09:55 AM PDT |
| what does a weak force do to a lepton and a hadron? Posted: 29 Oct 2018 04:10 PM PDT my teacher has dropped me in the deep end here and hasnt explained what weak force even does aside from "changing a quark". [link] [comments]  |
| Posted: 29 Oct 2018 06:34 AM PDT I saw an article in r/todayilearned that discussed animal eye evolution and physiology and how it pertains to specific needs re hunting and self defense. This article got me thinking about how modern humans engage in activities that have little in common with those of 10,000 years ago. http://advances.sciencemag.org/content/1/7/e1500391 For instance, when compared to humans living 10,000 years ago, there is significantly less need, from a modern worldwide perspective, for most people to need to scan the horizon (unassisted by technology) for predators. Also, modern humans spend much more time than previous ancestors using their eyes to scan close-range information (I.e. books, computers, or manual labor). Most people I know who interact with modern society require eyesight modifications (glasses, contact lenses, lasik, etc...) to see clearly. I do not know if this is a direct result of the way humans have altered the needs for use of their eyes over the years. Also, I do not know if there is any evidence that human eyes have evolved as a result of modern technology and a reliance on things that are "closer" rather than "farther". I cannot imagine that the change would be significant considering the short timeframe I am proposing, but I am curious none the less. Thank you. [link] [comments]  |
| How did satellites impact the field of meteorology when they were invented? Posted: 28 Oct 2018 07:08 PM PDT When was the first hurricane observed under a satellite for example? Did people know what hurricanes looked like before satellites were created? What was meteorology like before the advent of satellites? [link] [comments]  |
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