What is the difference between misbehavior and mistaken behavior?

If you mean 'behavioral mistakes', a mistake concerning behavior is simply a mistake. For example, if you mistakenly believed your mother got off work at 4:30 so you placed a call to her cell phone at 4:35, but she worked until 6pm, it would be a mistake rather than a deliberate wrongdoing.

Misbehavior, however, often includes 'intent', when someone (often a child or teen) does something they know is wrong or that violates family rules. For example, the Smith family has a 9pm curfew, but the Jones family lets their kids run the neighborhood until 11pm. If a Smith child tries to stay out till 11pm, it would be deliberate misbehavior.

However, young children often "misbehave". When a child is very young, before they completely understand and remember rules, he/she may misbehave, but their misbehavior is not always intentional. This is why parents need to start early and continually teach rules and expectations as well as model "good behaviors".