Answer:
Think and feel.
Step-by-step explanation:
According to psychology, behaviour is a set of responses to an specific environment or stimulus, and its nature is psychosocial. Behaviour can be conscious or unconscious, depending on the circumstances. Either way, it's affected by thoughts and feelings. If a person feels sad, he's gonna response to stimulus negatively. But if a person is happy, he's gonna receive stimulus positively.
Moreover, thinking processes are directly related to conscious behaviours, because implies a response after having thoughts about it. If we think first and then act, we are adopting a rational behaviour as such.