Charles Darwin suggested that emotions evolved for communication and survival, serving as vestigial action patterns.

For instance, when we get scared, our palms sweat. This is thought to enhance grip, a potentially life-saving feature for our tree-climbing ancestors!

Darwin's theory supports the notion that emotions should be expressed similarly across all cultures. This is seen in blushing, a universally observed emotional response. However, the area of blushing varies based on the amount of skin habitually exposed in different societies.

This theory suggests that emotion is a result of our interpretation of physiological responses to external stimuli.

So, you're not scared because you see a snake; you're scared because your body reacts (heart rate goes up) and you interpret this reaction as fear.

This might sound weird at first, but modern research shows there's some truth to it!

Cannon and Bard suggested that emotional stimuli trigger both physiological responses and conscious experience of emotion simultaneously.

So, your feeling of fear isn't just because of your body's reaction, but happens alongside it.