Simonds (1983) connects contraction and expansion with decrease and increase.

Grave Goods of a 9th century BCE aristocratic woman buried near the royal tombs in the necropolis of Aigai 02. Date 9th century BCE.

“In 1978 psychologist John Bassili conducted an experiment in which he painted the faces and necks of several actors and actresses black and then applied one hundred luminescent dots. Participants were then asked to assume different expressions, such as ‘happy’, ‘sad’, ‘surprised’, and ‘angry’. In the final video recording, with only the luminescent dots visible, the outcome was quite revealing: while expressions of anger showed acute downward V shapes (angled eyebrows, cheeks, and chin), expressions of happiness were conveyed by expansive, outward curved patterns (arched cheeks, eyes, and mouth). In other words, happy faces resembled an expansive circle, while angry faces resembled a downward triangle.”

Lima, M. (2017)

‘Bending all of our joints and curling up into a ball’. Laban called this gathering. Contrastingly, we can stretch all of our limbs into a star like position, stretching even our fingers, to extend our kinesphere. This is called scattering.
(Newlove, 2004)

There is a possible relationship with the testosterone hormone. The amount of testosterone in the blood expresses the willingness to win and the degree of sense of domination. Carney et al. (2010) investigated the influence of different attitudes on the power radiation of the people, measured by two hormone values, cortisol and testosterone. The amount of cortisol is a measure of the amount of stress that a person has. The different attitudes that were tested differed in two non-verbal dimensions that are universally linked to power. These dimensions are: expansiveness: taking up more or less space, and openness: arms and legs together or spread out. People with an open and large posture have an increased amount of testosterone and a reduced amount of cortisol in the blood. With that, they radiate more power. In contrast, people with a closed and contracted posture have a reduced amount of testosterone and an increased amount of cortisol in the blood. That means that they are radiating more powerlessness.

The spiral is a very old and widespread graphic symbol. It forms a dynamic system, which either contract or expand, the motion being either centripetal or centrifugal. Because of its similar shape to turbulences and whirlpools in liquids flowing downwards through an opening, such a symbol may indicate sinking into the ‘waters of death’. This could explain why such symbolic figures are often carved into boulders of prehistoric megalithic tombs. The double spiral connects both elements, contract/expand, into a unit. It can be seen as the ‘origin and decay’ and the reversibility of this process. The meaning of the triple spirals in prehistoric megalithic tombs can no longer be traced. The connection with the labyrinth also remains hypothetical, although the thought of a difficult way in and out again suggests a connection with the symbolism of dying and being reborn. (Biederman, 1992)