Originally Posted by ElizabethN
The Hoagie's Gifted page that attempts to quantify levels of giftedness defines "highly gifted" as 145+, and "profoundly gifted" as 152+, 175+, or 180+ depending on the instrument used to test. (It does not include the WISC-V, the most recent test edition, in its definitions.) Davidson, on the other hand, defines "profoundly gifted" as starting at 145. I think that George is correct in stating that Hoagie's and Davidson are using these words differently, and that "Davidson PG" is roughly the same as "Hoagie's HG".
My impression of the term "HG+" as used on this forum (it might even be exclusive to this forum) was to say it's 145+, by whatever other names it goes by. I am unaware of anyone using the term to indicate that it refers to those with a score less than 145. Indigo, can you find a post that suggests this?