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.
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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.
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.
In the vanishing ball illusion, a study found that when the magician pretends to throw the ball in the air, and his gaze follows the imaginary trajectory of the ball, almost two-thirds of the participants will be convinced that they had seen the ball move up. If his gaze did not follow the imaginary ball, the illusion was far less effective.
This illustrates that the illusion is mostly driven by expectations. Our eyes find it difficult to track fast-moving objects. Looking at the ball is only possible when we can predict where it will be in the future.
The brain is the ruler of our movements and the keeper of our thoughts. The brain is also joined to the body, and connection goes both ways. For example, if receptors indicate hunger, we find food to eat.
Research shows that those sensations do more than alert the brain to the body's immediate concerns. Studies of the heart give insights into the role the body's most basic processes play in explaining our experiences.
Happiness is not a goal or something to pursue at a later time. Emotional health is a skill to be mastered, not a destination to eventually arrive at.
And being happy is being linked to an active lifestyle, a better diet, better sleep, better weight management, lower stress levels, an improved immune system, and increased life expectancy.