When we feel angry or anxious, our attention tends to narrow down. We can no longer see whats going on around us and we can only notice what is in front of us. So when we are stressed out or filled with anger, our ideas are less pleasant than the way they truly are within our own conscience. In order to understand a problem, we need those ideas that we do not find pleasant at that particular emotionally-charged moment. When we smile, we feel better and increase our attention flexibility and the ability to think holistically. Smiling can help us focus and understand better.
Smiling women may seem more attractive to men than smiling men to women. Men feel very attracted by a smiling, beautiful woman, whereas women may perceive a smiling man as less masculine. Psychologists say that a genuine smile never lies. Fake smiles involve only ones lips, whereas the genuine smiles, also called Duchenne smiles, also involve ones eyes.
Smiling can be used for hiding ones true feelings, but its not so easy to imitate a genuine smile, because a genuine smile takes place within certain timing. There are certain clues that may help us determine the genuineness of a smile. Thus, a genuine smile starts slowly; it takes about half a second to spread out on the whole face. According to some researches, as compared to a frank and rapid smile, honest and slower smiles are more trustworthy, more genuine and even more coquette.