Psychological research demonstrates that emotion and reason are direct opposites of each other.

Some emotions, such as happiness, appear to be recognised by a substantial majority of people in all cultures.

According to the James-Lange theory, emotions follow from our bodily reactions.

Two-factor theory proposes that arousal is necessary for emotion.

The mere exposure effect refers to the finding that repeated presentations of a stimulus lead to less liking of that stimulus.

Good moods often allow us to consider novel alternatives to problems.

Money is highly correlated with happiness, especially at high levels of income.

A few months after hitting it big in a lottery, lottery winners are not much happier than anyone else.

High self-esteem is essential for good mental health.

Pessimism is an adaptive strategy for some people.

According to the Yerkes-Dodson law, we generally do best when we are at our highest level of arousal.

Obese individuals seem resistant to the effects of leptin.

Starvation can lead to the symptoms of anorexia.

Few people are sexually active into their seventies and eighties.

Scientists are yet to discover a dependable biological marker for sexual orientation.

When it comes to romantic chemistry, opposites attract.

In general, people find average faces the most physically attractive.

Companionate love and passionate love appear to be psychologically and physiologically independent.

Passion and commitment play a key role in love, but are irrelevant to hate.