Biological Handedness (Laterality)

Biological handedness, or laterality, is GNM's proposal that a person's handedness determines which side of the body a given conflict affects. It enters the framework through the Iron Rule and combines with the fact that each brain hemisphere (the brainstem aside) controls the opposite side of the body.

The framework splits close relationships into two categories — mother/child conflicts and partner conflicts — where "partner" covers essentially everyone who is not one's mother or child: a spouse, a sibling, a colleague, a friend.

The mapping runs in opposite directions for the two handedness groups:

• For a right-handed person, GNM proposes that mother/child conflicts affect the left side of the body, and partner conflicts affect the right side.
• For a left-handed person, that mapping is reversed: mother/child conflicts affect the right side of the body, and partner conflicts affect the left side.

Getting handedness right is therefore load-bearing — read it backwards and the whole side-mapping inverts.

GNM identifies biological handedness with the clapping test: clap spontaneously, without thinking about it, and observe which hand lands on top. The hand on top indicates the dominant side in this framework, which is not always the hand a person writes with — someone taught to write right-handed as a child may clap left.

An everyday example: a right-handed mother develops a symptom on the left side of her body in the period after her child moves overseas. In GNM's reading, the side is the clue that points toward the mother/child theme rather than a partner one — and had she been left-handed, the same theme would be expected on the right.

This is an educational framework, not a diagnostic method.

More in the Five Biological Laws explained and understanding biological conflicts.