This is an excellent overview/summary. smile

Some of the research and authors mentioned in the article have been discussed in threads on the forums, including -

1. "A recent report from Johns Hopkins University shows that about two out of every seven children are ready for a higher-grade curriculum."
How can so many kids be invisible?
Wasting money teaching children what they know

2. "Our research – A Nation Empowered – shows many advantages to grade-skipping for talented students."
What research am I looking for

3. "Karen B. Rogers"
Acceleration advocacy advice needed

4. "David Lubinski and Camilla P. Benbow"
Just saw this on the weekly DYS distro

5. "Miraca Gross"
Article about poor school fit?

6. "Researchers have now developed a scale that can help a parent make such a decision for their child in kindergarten through eighth grade. The scale helps parents or teachers look at the main factors they need to consider when making such a decision. It also provides guidelines on how to weigh the relative importance of each of these factors."
This is the Iowa Acceleration Scale (IAS), now in its 3rd edition: IAS-3.
What research am I looking for

There is a roundup of acceleration threads here.

NOTE: The article linked in the OP ends with "This article was originally published on The Conversation. Read the original article." That original article is found at this link, and it contains excellent links to its various source documents. Well worth a read!