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Old 11th July 2018, 07:54 AM
Frederator Frederator is offline
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How common is misattribution?

By "misattribution", I mean incorrectly identifying the MRCA.

I've encountered this a few times myself, as time goes on and additional matches in a specific region clarify the path of descent. But I'm struggling for some way to quantify this phenomenon.

My first try: I've identified 13 matches (out of a total of roughly 1,300 total) where I know for a fact that donors share ancestry with each other besides the line to which our shared DNA is properly attributable.

I'm sure there are many, many more. I have identified MRCAs for only a small minority of my matches, and most have at least one significant brick wall.

Some of these cases are easy to understand--families living in proximity for centuries are likely to have complex relationships. But a lot of them are just really surprising.
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Old 11th July 2018, 12:48 PM
georgian1950 georgian1950 is online now
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Originally Posted by Frederator View Post
By "misattribution", I mean incorrectly identifying the MRCA.
Probably a lot. I find in the field that people see what they want to see (all the way from novice to expert/professional). The methodology is loose enough that they can get away with it.

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Old 11th July 2018, 01:27 PM
georgian1950 georgian1950 is online now
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Robert Estes has a new blog entry which might be relevant to this discussion:


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