Taking into account that our own eyes function based on the existence of spheres, such as the iris or the pupil, there is no wonder that we all are, as individuals, prone to choose circular lines over straight ones.

The attraction of the circle

Over the years, research has shown that individuals tend not only to prefer contoured lines over straight ones but also to associate more joyful feelings with the first ones.
Furthermore, a recent study has proven that people's preference for curved real objects has not changed a bit. We tend, it seems, to identify angular shapes with fear, aversion, and dislike, while circles bring to our mind feels like safety and peacefulness.

A preference for circles

According to research in the field, people have the tendency to associate happiness with circles and anger with triangles. 
This seems to find its meaning in individuals' attraction to the roundness of a child's face, as, involuntarily, we associate innocence and honesty to round-shaped items.

Favoring the round-shaped items

The circle has been adopted in every conceivable domain of human experience, from money and art to architecture and religion. The interesting question is: why? The circle is omnipresent in nature, but can this fact alone explain its central role in the cities we build, the objects we design, the visual symbols we create, and the numerous layers of cultural meaning we construe?

The attraction of the circle

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