I've been thinking about this thread.

1. Are there any studies that involve intelligence (IQ-based) beyond immediate family members? I have a eg/pg DS6. My husband and I may be gifted, but we're not eg/pg. However, both of my parents had sisters who were eg and tested around IQ 160+ in 50s. Just wondering if there's any data on extended family members, genetics, and intelligence.

2. I've seen the quantitive approach to intelligence by criticized and wondered if anyone has come across what UDL (Universal Design for Learning) has been arguing:

Psychometrics from the time of Binet asserted that a single, underlying trait called "intelligence," which varied only in quantity or amount but not in underlying nature, accounted for academic achievement. UDL is based on new brain research (Rose & Meyer, 2002) that asserts that the intelligence of individuals differs qualitatively according to how three distinct neural networks interact [recognition, strategic, and affective networks]. Virtually infinite combinations of learning preferences emerge in an individual based on variation in the way they receive information, act upon it strategically, and engage in learning activities affectively. If human intelligence varied quantitatively according to a single factor, the logical implication would be that the more of this single attribute an individual possessed, the more of the curriculum they could absorb, and, therefore, the more material they should be able to access. However, from a UDL perspective, qualitative differences in the ways in which individuals learn implies that similar qualitative differences are possible and should be available in the curriculum itself so that each learner may approach it in the manner best suited to her or his preferred learning mode.

(http://aim.cast.org/learn/historyarchive/backgroundpapers/promise_of_udl/how_udl)

If we use UDL's approach to intelligence, then you have a much wider swath of the population who are gifted but in multiple ways - which better fits Howard Gardner's theory on multiple intelligences.