Behavior is usually an uncountable noun, so it is rarely used in the plural:
✗ Parents should be able to prevent their children’s crimes or bad behaviors.
✓ Parents should be able to prevent their children’s crimes or bad behavior.
✗ The media often encourage violence and aggressive behaviors.
✓ The media often encourage violence and aggressive behavior.
The plural form “behaviors” is a specialized term used in fields such as psychology, social science, and education. This use is much less common than the uncountable use:
In this chapter, we discuss strategies for dealing with the problem behaviors of young children.