THE BTSA TEST
The cortex of the human brain has 4 quadrants, and the dominance of a quadrant determines a type of specialized thinking. Every person has one of these quadrants as dominant, a type of dominant thinking.

The cortex of the human brain has 4 quadrants, and the dominance of a quadrant determines a type of specialized thinking. Every person has one of these quadrants as dominant, a type of dominant thinking.