Do you have a link regarding the controversy? I'm totally clueless about it.
This may refer to:
1) Visual-Spatial, as exemplified by several old posts...
here,
here, and
here.
Anecdotal evidence is based on observation and experience;
Empirical evidence is based on the results of scientific research.
2) Justin Chapman, as described in this
2002 article, and this
old discussion thread.
Dr. Linda Silverman is well-respected and has helped many gifted kids and their families.
Silverman is also a contributing author to this book on
asynchronous development.