611. Some people are genetically predisposed to be pessimistic or negative about things.

612. Text wishes for good morning or good night activate the part of the brain that is responsible for feeling happy.

613. The type of music you listen to affects how you perceive the world.

614. The more you spend on others, the happier you feel.

615. The smarter a person is, the faster he thinks, and the more carelessly his handwriting

616. Food, love passion and danger, in any case, attract your attention.

617. Many people experience relationship disappointment at a time when passion passes.

618. Boys get away with more aggressive antisocial behavior in school and home than girls.

619. Girls tend to talk about other people; secrets in order to bond friendships; and school, wishes and needs.

620. Boys talk about things and activities. What they are doing and who is best at the activity.