Cyclopes in Greek mythology

Head of a Cyclops Colosseum. First century CE. In Hesiod the Cyclopes were storm genii, as their names indicate: Brontes, thunder; Steropes, lightning; Arges, thunderbolt. As for the Hecatoncheires or Centimanes-the 'hundred-handed'-their names are sufficient to characterise them. They, too, were three in number: Cottus, the Furious; Briareus, the Vigorous; Gyges, the Big-limbed. Titans, Cyclopes … Continue reading Cyclopes in Greek mythology

Colour genes

Opsins (protein molecules which serve as visual pigments sitting in the cones and rods) are made under the influence of genes. DNA differences result in opsins that are sensitive to different colours. Since all genes are present in all cells, the difference between a red cone and a blue cone is not which genes they … Continue reading Colour genes

Cold/warm suggestion of depth

The perceptual and psychological effects of the cold / warm contrast indicate that warm colours tend to appear to the front in an image, while cool colours tend to fall behind. In classical landscape paintings, for example, the blue colour was applied to suggest depth and distance. (Michiels, DSD 2021)


Cooperativeness quantifies the extent to which individuals conceive themselves as integral parts of human society, and corresponds with the psychoticism trait. Low in cooperativeness: aggressively self-centred and hostile, intolerant, callous, unhelpful, and vengeful. intolerance, social disinterest, unhelpfulness, revengefulness, self-advantage. High in cooperativeness: agreeable in their relations with other people, socially tolerant, empathic, helpful, and compassionate, … Continue reading Cooperativeness

Cafeine, cognitive tasks and extraversion

Moderate doses of caffeine hindered the performance of introverts and helped the performance of extraverts on a cognitive task. However, these phenomena were affected by time of day and impulsivity. Low impulsives are more aroused in the morning and less aroused in the evening than are the high impulsives. (Revelle et al., 1980)