Five-year-olds misbehave for a variety of reasons, including attention-seeking, lack of confidence, in response to change, testing limits and as a way of asserting themselves. Children continue misbehavior when they discover that acting out is an effective tactic to manipulate and control others.

By the time your child reaches 3 years old, he should be just about done with the behaviors that are characteristic of the “terrible 2s.” Two-year-old children generally are self-centered. They dislike sharing, interact poorly with other children and lack self-control, empathy and social skills.

A child’s reasons for lying are often dependent on her age. CNN Health quotes Dr. Elizabeth Berger, author of “Raising Kids With Character,” as indicating that a 9-year-old most often fibs to escape negative consequences or an unpleasant situation.

Feeling angry is natural part of the fight or flight response for all people and is often a reaction to a threat, feelings of frustration, or the perception of being criticized. Anger can also be a more aggressive and protective version of underlying emotions such as loneliness, sadness, and fright.

Picking at and peeling off the skin on your fingers can be an unconscious habit or a known behavior in which you indulge when you're stressed or upset. What may seem like a benign happening can become a medical problem in some cases; open wounds on your fingers can pick up bacteria easily and may become infected.

Violence in children includes a range of behaviors, including threats, bullying, harm to animals, aggression toward others, explosive temper tantrums and armed assault. Children who show a pattern of such behavior are often diagnosed with a psychiatric illness known as conduct disorder.

Children chewing on their fists, their toys and their furniture is relatively normal, and most children go through it at some point. However, it can be alarming to you as a parent if it seems extreme or goes on for long periods of time, according to the KidsHealth website.

Nearly 11 million children under the age of 5 in America are in some kind of child care every week, according to Child Care Aware of America. Day care is a necessity for many working families who cannot afford to have one parent stay home with the children.

When your child blinks excessively for no apparent reason, she may be experiencing a nervous tic. If you find your child is displaying erratic movements or voicing inappropriate garble, have her evaluated for a tic disorder, because early intervention can help her thrive despite unwanted behavior.

The decision to send your child away to school is often a difficult, emotional decision. But for parents of children with behavioral problems, it is often the only decision.

It’s common to worry if your youngster is feeling down in the dumps because of a headache. But in most cases, a headache on its own is rarely cause for alarm. However, if the headache is accompanied by nausea -- or other symptoms -- it could be a sign of a more serious condition. KidsHealth.

A child often spits to illicit a reaction from adults or to show contempt for something when verbal explanation isn't possible. Spitting is a habit that can follow your child throughout life and cause problems, so it's important to do what you can to make your child stop spitting as soon as you notice a problem.