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>According to Dr. Walker, about 40 percent of the population are morning people, 30 percent are evening people, and the remainder land somewhere in between. I'

by elhudy 8y ago

>According to Dr. Walker, about 40 percent of the population are morning people, 30 percent are evening people, and the remainder land somewhere in between. I'm not a sleep expert or a neuroscientist, but I take issue with being branded into a sleep-band that is "hard-written" into my DNA. I perform at my worst when I wake at times other than my current habit allows for - whether that is early or late. I don't believe this leaves me in the 30% of in-between people. It just means that my habits are most telling of my performance. Don't assume my chronotype.

coldtea 8y ago
It's not some random commenter that assumed the cronotype though, it's scientists. So, you can take it with them. Or you could an outlier, but it's not like this flexibility you mention is statistically true for most people. What has been studied is statistically true.
- yqx 8y ago
  > It's not some random commenter that assumed the cronotype though, it's scientists. However, what is actually known about the human body is often a lot more fuzzy and uncertain than how the popular press, or sometimes scientists, would have use believe. If the second paragraph of the Wikipedia article on the chronotype is to be believed there is plenty of room for believing that environment and habits play a role in your Chronotype as is the case for most behaviours. > The causes and regulation of chronotypes, including developmental change, individual propensity for a specific chronotype, and flexible versus fixed chronotypes have yet to be determined. However, research is beginning to shed light on these questions, such as the relationship between age and chronotype. https://en.wikipedia.org/wiki/Chronotype https://en.wikipedia.org/wiki/Chronotype
- elhudy 8y ago
  It is understandable that my ethos is not on par with Dr. Walker's, and that my anecdote would indeed make me an outlier. With that being said, I am legitimately unable to find any conclusive research that says there are effectively three "cronotype" bands, and 100% of the population falls into one of these three bands, and that these bands are completely DNA-driven and non-dynamic. Every source of this information seems to be behind a "buy my book" paywall from some inspirational speaker like Daniel Pink. The article says: "For further proof, researchers at Rockefeller University last year announced the discovery of a gene mutation that apparently accounts for D.S.P.S." In that study, the author says, " According to the new research, the mutation may be present in as many as one in 75 people in some populations." While there might be more genes which lend themselves to DSPS, the numbers from the study don't exactly lend extra credibility to the argument. Can you help me to understand where it has been statistically proven that 100% of humans fall into roughly three equal bands of morning/evening/between, and that this has been solidly linked to genetics rather than environmental/habits or a combination of both? Most studies on humans don't make such bold claims because genetics are so diverse across populations that the study population itself would need to be enormous.
- elhudy 8y ago
  I wanted to check in on this because I am genuinely interested in reading the study. Were you able to find it?

by elhudy 8y ago

coldtea 8y ago

It's not some random commenter that assumed the cronotype though, it's scientists. So, you can take it with them. Or you could an outlier, but it's not like this flexibility you mention is statistically true for most people. What has been studied is statistically true.

yqx 8y ago
> It's not some random commenter that assumed the cronotype though, it's scientists. However, what is actually known about the human body is often a lot more fuzzy and uncertain than how the popular press, or sometimes scientists, would have use believe. If the second paragraph of the Wikipedia article on the chronotype is to be believed there is plenty of room for believing that environment and habits play a role in your Chronotype as is the case for most behaviours. > The causes and regulation of chronotypes, including developmental change, individual propensity for a specific chronotype, and flexible versus fixed chronotypes have yet to be determined. However, research is beginning to shed light on these questions, such as the relationship between age and chronotype. https://en.wikipedia.org/wiki/Chronotype https://en.wikipedia.org/wiki/Chronotype
elhudy 8y ago
It is understandable that my ethos is not on par with Dr. Walker's, and that my anecdote would indeed make me an outlier. With that being said, I am legitimately unable to find any conclusive research that says there are effectively three "cronotype" bands, and 100% of the population falls into one of these three bands, and that these bands are completely DNA-driven and non-dynamic. Every source of this information seems to be behind a "buy my book" paywall from some inspirational speaker like Daniel Pink. The article says: "For further proof, researchers at Rockefeller University last year announced the discovery of a gene mutation that apparently accounts for D.S.P.S." In that study, the author says, " According to the new research, the mutation may be present in as many as one in 75 people in some populations." While there might be more genes which lend themselves to DSPS, the numbers from the study don't exactly lend extra credibility to the argument. Can you help me to understand where it has been statistically proven that 100% of humans fall into roughly three equal bands of morning/evening/between, and that this has been solidly linked to genetics rather than environmental/habits or a combination of both? Most studies on humans don't make such bold claims because genetics are so diverse across populations that the study population itself would need to be enormous.
elhudy 8y ago
I wanted to check in on this because I am genuinely interested in reading the study. Were you able to find it?