Socionics Quadras - what are these?
Socionics Quadras are groups of four socionics types ( two pairs of Dual types ) that share "Values".
"Values" can be calculated by the Leading functions of each of this types. Or they can be equally calculated by the Creative, Suggesting or Accepting functions.
Basically the four types of a Quadra share the aspects they are either confident with or they find attractive. So they share same general "likes" and "dislikes"