In 1928, the psychologist William Moulton Marston published Emotions of Normal People, proposing that ordinary human behavior orbits around four observable tendencies. Almost a century later, his framework — refined, validated, and translated into a thousand workplace workshops — endures because it flatters the reader with a strange and useful clarity.

You will recognize yourself below. You may also, perhaps uncomfortably, recognize your manager, your partner, the colleague who sends three-line emails at eleven in the evening. This is not a diagnosis. It is a map.