Stress and growth (arrows)

Inside the nine-pointed figure, lines connect each point to two others, forming two closed shapes: a hexad (a six-point figure) running 1 → 4 → 2 → 8 → 5 → 7 and back to 1, and a triangle running 9 → 6 → 3 and back to 9. Follow the lines from any one type and you land on exactly two others — traditionally called that type's stress point and growth point.

The common teaching, systematized by Riso and Hudson and by Palmer, reads the two directions as opposites: moving with the arrow describes a type taking on the less healthy traits of the type at the other end under pressure; moving against the arrow describes a type accessing the healthier traits of that other type when things are going well. It describes how a type's behaviour can shift by borrowing from a specific point on the diagram.

Six of the nine types sit on the hexad and shift toward and away from each other in a fixed sequence; the remaining three — Nine, Six, and Three — form a separate triangle. Every type has exactly one traditional stress point and one traditional growth point, fixed by the diagram.

An arrow describes shifting behaviour, not a second identity. Someone under stress doesn't temporarily become their stress-point type. They borrow a recognisable flavour of it — a normally accommodating type getting uncharacteristically blunt and controlling, say — while the underlying motivation stays exactly where it always was.

The strict positive/negative reading isn't settled within the tradition. Claudio Naranjo, whose 1970s teaching is the earliest source for reading these lines as stress and growth, is reported to have later said his original presentation had been misread — he described it as exploratory, not a claim that one direction is purely negative and the other purely positive. The strict, systematized version most people encounter today is largely a later development, chiefly from Riso and Hudson.

An arrow is something you notice in hindsight about a stretch of time, not a live diagnosis you run on yourself mid-argument. "I was leaning on my stress point that whole month" is a reasonable observation. "I'm currently becoming my stress point" is over-reading.

An arrow is different from a wing, though both involve another number. A wing is a steady, background influence from one of the two types beside yours on the circle, present most of the time. An arrow describes a state — something that shows up under specific conditions (stress, or ease) and recedes once they pass.

This is the part of the tradition with the thinnest research backing. Hook and colleagues' 2021 review (summary) found little empirical support for the stress-and-growth lines, and little support for wings.

Many people recognize the pattern in themselves: a specific way they change under pressure, and a different way they show up when they're doing well. Arrows are a traditional lens for describing variation a person already recognizes in their own story. They are not evidence of which type someone is.