[antasvara]

Your intuition is largely correct. For any given level of adaptive problem solver, approximately 55% of those people share the same literacy level (i.e. a Level 1 adaptive problem solver is also a Level 1 for literacy around 55% of the time). 35% have a reading level that's 1 up from their problem solving ability, and around 10% have a literacy level 1 below their problem solving ability.