In a chronobiological profile, three of the six properties belong to the right hemisphere (reflection, the I-strength and artistic thinking) and three to the left (activity, the We-strength and logical thinking). Add up each column and you have a measure of how the two halves of a person's brain share the work.
That the two halves of the brain do different work is not a chronobiological idea; it is one of the better-established findings in neuroscience. A French physician, Marc Dax, noticed in 1836 that loss of speech followed damage to the left side only; Paul Broca confirmed it at autopsy in 1861; and in 1962 Roger Sperry's studies of patients whose hemispheres had been surgically separated showed that the right side is not a passive assistant but has a complete set of functions of its own. Pavlov had already divided people, by the way their brains work, into artists and thinkers. Chronobiology takes that division and measures it.
The right hemisphere is the non-verbal one. It thinks in images, sounds, symbols and movement; it works continuously and intuitively; it sees the whole before the parts and finds new connections between things already in the mind. It governs the left side of the body, body language, play and rhythm, which is why people with a strong right hemisphere are often good at dance and sport, remember faces and places well, and prefer a concrete example to an abstract rule. Poets, painters, composers and directors need it in abundance.
The left hemisphere is the verbal one. It thinks in words and signs, works in sequence, and is responsible for logic, analysis, counting, checking and evaluating. It controls grammar, remembers words and numbers, and governs the right side of the body. Analysts, mathematicians, linguists and planners live here. It is more careful than the right hemisphere, and slower.
Most people are asymmetrical: one side leads. Modern education strengthens the left almost exclusively, which is why intuitive, image-thinking children can be underestimated at school. The ideal, as the method sees it, is balance. The great examples are people who had both: Einstein, who first imagined riding a beam of light and then spent ten years deriving the mathematics; Leonardo, who painted and invented with his right hemisphere and kept meticulous accounts with his left.
There is a practical lesson in this for anyone who solves problems for a living. Define the problem with the left. Generate ideas with the right, as many and as freely as possible. Then evaluate with the left again. Insight, the answer that arrives whole, comes from the right hemisphere, but it only comes after the left has done its analysis. Knowing which side you lean on tells you which half of that process you tend to skip.