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Yawn was nominated as a good article, but it did not meet the good article criteria at the time (December 31, 2006). There are suggestions below for improving the article. If you can improve it, please do; it may then be renominated.
Expand short sections and ensure good flow throughout article
Which animals yawn, and has it evolved independently more than once?
A little further explanation as to how yawning is advantageous - how would an organism that didn't yawn/respond to yawns be more likely to die?
Physiologically, what is the difference (if there is any) between a true reflexive yawn and a voluntary effort to simulate a yawn? Why do they feel different?
What medical conditions produce yawning?
Priority 4
Video with new hypothesis
This video (from ABC News) puts forth a newer hypothesis that I didn't really see mentioned in the article: We yawn to cool our brains. Sounds silly, but watch the video:
I challenge anyone to explain the correlation between sleepiness/tiredness, as well as stretching, with yawning, using this hypothesis. ThVa (talk) 13:18, 31 December 2007 (UTC)[reply]
Failed For Good Article
This article failed good article nomination. In one editor's humble opinion, measured the six good article criteria: 1. Well written?: Parts are well written, but overall the effect is lacking and seems disjointed. Sections should be more than one sentence long. "Hypothesized causes" should be prose, but not a combination of prose and a list. 2. Factually accurate?: Several authoritative statements are made without attribution, especially in the "Hypothesized..." section. 3. Broad in coverage?: Ok. 4. Neutral point of view?: Ok. 5. Article stability? Ok. 6. Images?: Ok.
A lot of the structure of the article or essay seems to come from "The straight dope" article on 19-Sep-1986. Including the bits about penguins and the long held belief.
Quotations need attribution.
I have minor issues with this bit:
Yawning is a powerful non-verbal message with several possible meanings, depending on the circumstances:
It's a not-always-so-subtle cue for attention, sympathy and a respite due to tiredness, stress, over-work or boredom.
An action indicating psychological decompression after a state of high alert.
A means of expressing powerful emotions like anger and rejection.
I don't think #1 is really a cue for attention in itself, and the phrase "not-always-so-subtle" sounds too much like an ironic way of saying "blatant". I think it'd be better stated as an indicator of tiredness, etc. I'll change that now. #2 is...I dunno. I'm not familiar with yawning in that context. #3 is definitely unfamiliar to me; I don't know anybody who yawns because he's angry! It may partly be a cultural thing, but if so, it should be marked as such.
Also, the idea of yawning being contagious could possibly be elaborated further. I've yawned numerous times in making this post because it's about yawning. :P
I don't like how the first section is written in the past tense:
A long-standing theory behind yawning is that there was too much carbon dioxide and not enough oxygen in the blood. The brain stem was assumed to detect this and would trigger the yawn reflex. The mouth stretches wide and the lungs inhaled deeply, causing oxygen into the lungs and thence to the bloodstream. This is not certain however: a more recent theory is that it is a form of bodily temperature regulation.
so i've changed it
Guy
speaking of that part, i'm quite confused. i frequently experience chain yawning when air quality is poor and in a crowded room (places where logically there is less oxygen available)or when talking for a very long time without any break, and the only way to stave it off is to conciously take deep breaths. wouldn't this support the idea of it being an oxygen-deficiency problem triggered by too high a CO2-to-Oxygen ratio? note that plenty of people have the same experience as me, but otherwise i haven't seen anything scientific on it.
Is it just me, or does everyone involuntarily yawn after reading this page? --Sum0 18:57, 20 Apr 2005 (UTC)
I just had a cup of coffee and I can't freakin stop. I'll go get another cup and freak myself out with spiders, that'll wake me up. --Cuervo16:25, 3 May 2005 (UTC)[reply]
Seriously! I yawned at least 10 times before I finished reading.Cacophony 00:48, May 22, 2005 (UTC)
I changed the footnote style, thinking it was a new feature of the MW update and actually good. Turns out it's pretty much the same as the old footnote style, so revert if you want. For the NeuroImage paper I think the PMID citation is a better way to go. --Chinasaur 6 July 2005 18:56 (UTC)
I updated the reference to Gallup by citing the original journal article used as a basis of the television interview. Unfortunately, I was not able to get the footnote to work out just right. If someone could fix it so that it looks more appropriate, I would appreciate it. Thanks.
05:02, 14 August 2007 (UTC) eia1957
I once read somewhere that placing one's hand over one's mouth while yawning is considered polite, but actually originates from a medieval belief that demons could actually enter one's mouth while yawning unless the mouth was covered. Has this been actual cause for the practice and does it deserve mention?
I'm not satisfied with the description of what your body actually does when you yawn. Mentioned in the article are the obvious things such as strectching your mouth and face wide, inhaling and exhaling deeply...however, what's missing is the fact that yawning is involuntary and is not something you can make yourself do. I can open my mouth, stretch my facial muscles, and take a deep breat--but that's not a yawn!!! I am convinced that yawning involves other processes as well that we can't control--perhaps a widening of the trachea? I don't know. But the description of what exactly happens, physiologically, in a yawn, is unsatisfying to me, because clearly there is more to it than that, and yawning is more than simply opening wide and breathing deeply. Hmm...
I can yawn voluntarily. Of course, I've been yawning a lot since I started reading this article. Just thinking about yawning makes me yawn. If I try to yawn, at first it is just opening my mouth wide, but then I start to feel the yawn at the back of my throat, and it becomes a yawn. There does feel like there is a widening of the trachea during a yawn, and the lungs do seem to really expand.--RLent20:59, 17 March 2006 (UTC)[reply]
I can yawn voluntarily as well. There almost seems to be a pair of muscles at the sides of my throat way way back that I can flex and it can trigger the yawn as well. Another interesting thing is that I can hear this low bass rumbling noise when the muscle is flexed, and I can hold the muscle until it gets tired. Can anyone explain this? (see also: The Wind Sound -- down below) Lemec14:08, 11 July 2007 (UTC)[reply]
Angry Yawning
In response to the comment about the disbelief that a yawn can be an indicator of anger: I learned that a dog often yawns because they are stressed. My German Shepherd yawned at me whenever I was scolding her. I imagine sometimes she could have been angry for getting in trouble just like little kids do.
I've heard a similar theory from dog trainers, only it was that dogs will yawn when they're not sure how to react to a stimulus. So some dog yawns are signs of confusion. I wish I had a source on this. Also, I'm on my 40th yawn since reading this article. Feels good. O0drogue0o05:51, 7 July 2007 (UTC)[reply]
Evolution
How did Yawning come about though evolution? What is the advantage of Yawning? —The preceding unsigned comment was added by 199.201.168.100 (talk • contribs) .
If the article doesn't have the information I think it's perfectly acceptable to point that out by asking. I usually add questions like that to a to-do list myself, though if you want a quick answer the reference desk would be the best place to go. Richard00101:02, 27 May 2007 (UTC)[reply]
Facial features of the yawn
I remember reading that even when people cover their mouth when they yawn it is still contagious because what triggers others to yawn is the shape of the eyes and nose. This is also the reason why people can't make other's yawn with a fake or forced yawn, versus a genuine one. 71.250.17.6200:56, 25 June 2006 (UTC)[reply]
picture in your head a person yawning. when i do it is def the nose and eyes all scrunched up and it makes me want to yawn. whereas remembering the sound does not. interesting —The preceding unsigned comment was added by 24.6.13.213 (talk • contribs) .
Robert Provine did the study. Please find the second sentence of "Contagiousness", starting with 'Observeing an another person's yawning...' --79.67.178.18623:33, 23 August 2007 (UTC)[reply]
I watched the episode. No, it should definitely not be listed as a source. The control group yawned 25% of the time, while the experimental yawned 29%. With only 50 participants, 25 for each side, the difference there is only 1. That is about as inconclusive as an experiment can get. Their methods were more or less sound, but the group was too small for such a minute difference to be confirmed. If this is listed, it should not be listed as "partly confirmed"; rather, it should be listed as inconclusive. I'll do that right now.
Mythbusters never does anything properly. I can recall a number of "myths" that actually is plausible and vice versa. The specific episode in question is actually one of their better ones, but, as already stated, the myth was considered partly confirmed despite the inconclusion of their experiment. Konaya17:37, 26 August 2007 (UTC)[reply]
Yawning "Contagious"
Hasn't really been mentioned anywhere in the article (besides a useless link at the bottom) that when someone yawns, another person usually yawns aswell. Just wondering if someone could add it to the article, list speculated reasons as to why, etc. Code E02:02, 10 October 2006 (UTC)[reply]
One of the possible hypothesis given in the article for yawning being contagious is the lack of air around the ears of the second person yawning. This doesn't hold ground as yawning is seen to be contagious even when we seee anyone yawning on TV without the person actually physically "changing the air pressure" around our ears.
I was actually a fan of the ear pressure theory, but then I realized that I was yawning countless times as I was reading the article. Heck, I yawned twice just typing this.
Animals that yawn
Is there an article on this? I just saw a video where a snake yawns, so how deep does the yawning reflex extend in animals? Obviously insects don't yawn (etc) but there must a clear line where yawning stops. —The preceding unsigned comment was added by 83.145.224.14 (talk • contribs).
Very good question - and another point: Has it evolved independently or does it show common ancestry? Added to to-do list. Richard00101:02, 27 May 2007 (UTC)[reply]
I think it sounds rather difficult a task. Firstly, how does one determine whether an animal makes the "yawning" voluntarily or not? The attack stance of certain snakes, and the intimidating growl of certain canines can't really be considered "yawns", but where do we draw that line? Konaya22:31, 6 August 2007 (UTC)[reply]
An observation
While reading this article, I had an overwhelming urge to yawn.
I yawned about 5 times reading this article, and am yawning right now.
I must agree! I yawned 4 times while reading it as well! This lends me to believe that 'contagious' yawning is not visual in nature but rather cerebral, meaning that even if the subject of yawning were to come up, it triggers the body's reflex to do so.
rofl that's so funny i just went to this talk page to mention that I yawned twice when i saw this article. oh crap i'm yawning again, no joke —The preceding unsigned comment was added by 24.225.226.21 (talk) 19:15, 5 May 2007 (UTC).[reply]
I agree, I was also about to post... Maybe, it is a psychological link between the word yawn, and the action.
P.S. Another theory: Yawning is copied, as when older adults yawned and slept in cave-man times, it signalled to others (Younger, Non-Alpha etc.) that it was safe to sleep.
Yet another yawner over here... The theory about yawning being cerebral leads me to think that yawning must be socially related, perhaps a means of communication. In any case, I think that the act of yawning and the yawning reflex itself are two separate things, although the former includes the latter. The reflex is probably useful for any said theories, but the real question is what it was originally intended for. Konaya22:53, 6 August 2007 (UTC)[reply]
I yawned too. I'm not really sure what that means, but I think it's definitely significant that so many people have yawned while reading about yawning (granting, the people who aren't yawning aren't posting about it, so we don't really know if it's something that most people do). —Mears man03:43, 12 September 2007 (UTC)[reply]
I can make my dog yawn by either yawning or fake yawning ,I can also force myself to yawn.If yawning is caused by lack of oxygen, wouldn't people that have smoked for a long time be yawning all the time?! ~:Gr8Buzz:~
I purposely revisit this page again and again just so I can truly yawn. Feels soo good.
A new yawning hypothesis
I have my own hypothesis about yawning, which is supported by comparing notes with other friends and family: It's caused by hunger, or possibly thirst. This is most evident when travelling somewhere in a car around lunchtime or dinnertime, delaying the normal meal time.
This hypothesis is also supported by observing nature: Chicks in a nest "yawn" when they are still hungry. My theory is that we yawn due to a biological throwback when our ancient parents brought food back to the "nest" and those that were hungry yawned in order to be fed.
This explains several of the odd things about yawning. For example, it explains why we open our mouths as wide as possible (to easily admit food; if it was about oxygen, even a narrow opening would be sufficient). It explains why we close our eyes tightly (to stop food being dropped into them). It explains why we feel the need to accompany the yawn with some noise (to gain attention). It explains why yawns are "contagious" (especially to others who are also hungry).
My reasons for bringing this up on the discussion page are as follows: Do I need to be a scientist, or does this hypothesis need to be scientifically tested, or does the hypothesis need to be widely accepted, prior to adding it to the main page? I'd prefer to firstly gain sufficient consensus that the hypothesis has merit rather than risk my unfounded hypothesis being simply deleted.
However, there is the possibility that your hypothesis is based on a mere coincidence. Hunger usually induce fatigue. When yawning, one is often affected by both, and that would make it hard to rule out one of the two.
Then, again, there are quite a number of indications in favour of your theory, and it is definitely worthy of note, and possibly further research.
I'm in serious disagreement with Fieggen's hypothesis. First of all, I ate (and drank) well half an hour ago, yet I yawned a dozen times reading this article and then the discussion (and others have mentioned doing this in this discussion page as well). So that's two incompatibilities (I'm far from hungry and thirsty, and it makes no sense that reading about the concept would act as a trigger if hunger/thirst was the cause). A third one is that it fails to explain the strong correlation between sleepiness/tiredness and yawning. ThVa (talk) 13:14, 31 December 2007 (UTC)[reply]
Same thing happens to me, must be universal, also if I have a dry mouth and then yawn, I salivate. However, that might just be me. The article should definitely mention something about eyes watering. Perhaps somebody could confirm or disprove the saliva effect? 68.189.67.2706:34, 12 July 2007 (UTC)[reply]
I also salivate, and if I'm not careful, a fine spray sometimes shoots out of my mouth from under my tongue. I've loooked and it comes from two little spouts under the tongue which I imagine must be salivary glands.--200.14.108.115:13, 27 July 2007 (UTC)[reply]
The tearing is due to physical stress on the tear glands during more extreme facial musclework, like laughing (indeed, one can laugh until crying) or yawning.
Regarding salivation, I cannot explain it; although I can account for the "saliva-shooting" the previous writer have experienced, only not during the act of yawning. I can procure this phenomenon at will, merely by tensing my tongue in a certain way. The previous writer probably does this in a similar way when yawning; since yawning tenses a vaste variety of facial muscles, putting considerable strain on the facial tissue, I find it quite surprising that salivation and the inducing of tears are two of the only very few consequences reported. Konaya23:30, 6 August 2007 (UTC)[reply]
The Wind Sound
When I yawn, I hear white noise, much like wind rushing past my ears. I've never read about the cause of this, or, now that I consider it, even another report of it. I assume it's a rapidly modulating contraction of the tensor tympani, or perhaps something else vibrating in my skull. First: is this a noted phenomenon? Second: are auditory phenomena within the scope of the article? Fiasco03:19, 1 June 2007 (UTC)[reply]
I have also noted this noise, I would describe it as a muffled rumbling. It also occurs when trying to restore appropriate pressure on the eardrums (odd way of describing it, I am aware of that, but due to English not being my primary language I fail to find a more suitable expression). The only place I've seen this phenomenon on record is as a brief side note in a book of an irrelevant subject; this have, until now, led me to believe that I am the only one experiencing this. Now, when this belief have been proved wrong, I would much appreciate someone, preferrably with at least little more than a laymans knowledge of medicine, to shed light on this matter. Konaya00:04, 7 August 2007 (UTC)[reply]
Mythbusters Episode
The bit about yawning being contagious needs to be edited; "Mythbusters" should not be cited as a source, as their research methods are questionable and unscientific. I myself am not an expert on yawning so I will leave the article as is, in hopes that someone else with more knowledge on the subject can cite some real study on the contagiousness of yawning. -Mark G 65.197.19.24221:06, 29 June 2007 (UTC)[reply]
No offense, but you're being quite presumptuous. The experiment in that particular episode was quite sound, though the results were terribly inconclusive. I do agree with the removal of that particular reference, however, because of the uselessness of it. Anyone agree? (Frazz15:54, 13 August 2007 (UTC))[reply]
I agree - and I also agree completely with the first argument. No matter how sound Mythbusters' "research" may appear, it falls short of scientific, it isn't properly documented, and doesn't deserve to be cited as a source - let's not mix up science and entertainment! There have been plenty of scientific studies concerning this topic that could take the place of the Mythbusters reference.
Removed. I'm just curios though, isn't video taping everything you do enough to qualify as documented? Maybe I'm missing something, but it seems that recording everything should be sufficient. I'd appreciate it if you cleared this up for me. (Frazz22:24, 16 August 2007 (UTC))[reply]
I don't see why the paratroopers bit is in this article. There is no citation to anything, and it reads like hearsay:
"Another speculated reason for yawning is nervousness - paratroopers were once noted yawning right before their first jump, and had just come from a coffee break."
Is that something we can mark as "citation needed"? (I'm pretty new here, so I want to be sure that's how others would handle it). previously unsigned comment by User:68.251.61.137
I hope someone will write something about the process of pandiculation (which is redirecting here) in some detail. I mean the electrical (?) current that seems to pass through the body while someone is yawning very strongly. 200.142.114.2414:00, 23 July 2007 (UTC)[reply]
