Can a stressor impact bahevior?
Any stress, especially heavy and long-endured stress over many months or years, can impact many things in the human body, including behavior.
Since we are all different, the exact impact on behavior will vary from person to person.
Some people might become withdrawn and bottle it all up inside, tend to become doormats and let people walk more over them and exploit them as they have no energy or fight left inside. This may result in even more stress down the line.
Others might become violent and aggressive, and take steps to rectify the situation, often resulting in more enemies and more stress.
Besides behavior, the stressor will also have serious physical and health effects and can result in physical and mental disorders developing, including depression, multiple organ and system failures, and even death eventually.