a study was done amongst a number of cognitively…
Page 234 keyword intelligence a study was done amongst a number of cognitively healthy individuals which found that over 50 different genes contributed in some way to the intelligence of an individual but at different levels or rates. It is there for likely that a team effort is more likely to take place between all of these genes. If they can find a gene that exemplifies stick to itovness that would probably have a greater impact on success.
— from Goals, Action & Defining Success (Goal/Action/Success/Motivation)