Time for some fluid intelligence (Gf): Back by popular demand...the Gf coffee mug

Back by popular demand (click here for a post from 2005 - and an interesting historical note about Jack Carroll's fondness for this Gf cup), the Gf coffee mug...with the two important fluid intelligence narrow abilities not formally included in the CHC taxonomy.  Click here if you want to join the Gf "fluid" intelligence club :)