In the context of emotional and personality development in middle and late childhood, which of the following is true of self-regulation?
1) Self-regulation is the ability to control and manage one's emotions, thoughts, and behaviors.
2) Self-regulation is not important for emotional and personality development in middle and late childhood.
3) Self-regulation is only important for academic success, not emotional and personality development.
4) Self-regulation is a skill that is fully developed by early childhood and does not change in middle and late childhood.