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  #11  
Old 03-11-2012, 11:20 PM
JessLough JessLough is online now
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that's more the reason of the study, than the hypothesis... is there anything that says what they expected the outcome to be?
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  #12  
Old 03-11-2012, 11:23 PM
~Tucker&Me~ ~Tucker&Me~ is offline
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Hmmm... I can't seem to find anything like that Here is the abstract:

"Vocal plasticity is the ability of an individual to modify its vocalizations according to its environment. Humans benefit from an extreme form of vocal plasticity, allowing us to produce a wide range of sounds. This capacity to modify sounds has been shown in three bird orders and in a few nonhuman mammal species, all characterized by complex vocal communication systems. In other mammals, there is no evidence for a social impact on vocal development. We investigated whether contact calls were affected by social environment and kinship during early ontogeny in goats, a highly vocal and social species. To test the influence of social environment on kid vocalizations, we compared half siblings raised in the same or different groups. The effect of kinship on calls was assessed by comparing full siblings with half siblings. Calls of half siblings were more similar when they had been raised in the same social group than in different groups, and converged with time. Full siblings had more similar calls than half siblings. The group-specific indicators in kid vocalizations show that goat call ontogeny is affected by their social environment. This suggests that vocal plasticity could be more widespread in mammals than previously believed, showing a possible early pathway in the evolution of vocal learning leading to human language. 2012 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved."

I'll take a second look.
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  #13  
Old 03-11-2012, 11:23 PM
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Sorry Im not much help here. All I can do is *hug* I been doing home work since 11 am. and finished about 11PM..
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  #14  
Old 03-11-2012, 11:25 PM
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Oh never mind, just found this!

"We predicted more similarities between calls of full siblings than between calls of half siblings, that is, kinship identity cues."
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  #15  
Old 03-11-2012, 11:26 PM
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Yay there you go!
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  #16  
Old 03-11-2012, 11:27 PM
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Originally Posted by Lossalfling View Post
Sorry Im not much help here. All I can do is *hug* I been doing home work since 11 am. and finished about 11PM..
Aw, thanks Hug to you too! It's 9:30pm here but I have a feeling I will be up until like 2... Partly my own fault for leaving it to Sunday, but I worked a double shift yesterday (left my house at 11am and got home at 10:30pm) and have felt sick so slept in this morning... Oh well. Lots of caffeine for me tomorrow lol.
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  #17  
Old 03-11-2012, 11:31 PM
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Ah, and it gets better!

"We hypothesized that if kid contact calls contain group identity cues (i.e. show similarities between calls of same-age kids of a given social group), these cues should be more pronounced at 5 weeks old, when goat kids are fully inte- grated into the social group with other offspring of the same age, than at 1 week old, when they stay mainly alone or with their sibling(s)."

Thanks you guys are the best

Still working on a critique though if anyone has ideas...
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  #18  
Old 03-11-2012, 11:53 PM
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Hmmm...not sure how to really explain this, and based only on the abstract, but a weakness could possibly be that individual personalities are ignored? Like, maybe the ones with similar calls just happened to be more likely to be social through their genetic expression? Correlation is not necessarily causation, blah blah blah....
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  #19  
Old 03-12-2012, 12:00 AM
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Originally Posted by Panzerotti View Post
Correlation is not necessarily causation, blah blah blah....
Ahh yes, this is the cliche answer but it's usually a good one. They did make a few assumptions in the end... here's a good one:

Quote:
Whereas full siblings probably have more similar calls because
some of the physical features of their vocal apparatus are similar,
the group effect we found probably results from the social environment
affecting vocal production during ontogeny.
[From the "Discussion"]

There are a lot of other things it could result from as well, they shouldn't say "probably."

Your PM box is full, but I've sent you all I have. Good luck, be sure to let us know the answer!
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  #20  
Old 03-12-2012, 12:11 AM
~Tucker&Me~ ~Tucker&Me~ is offline
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Thank you all so much for the help! And I will definitely let you know what he says
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