Why Good People Do Bad Things: How Situations Mould Behavior More Than Character

You like to think you know yourself. You would never ignore someone crying for help in the street, you would never follow an order that hurts another person. Most people believe the same thing. Psychology has spent decades testing that belief, and the results are uncomfortable: who we are in any given moment depends less on our character than on the situation we are standing in. Understanding this perspective, which psychologists call situationism, changes how you judge yourself, how you judge others, and how you protect the people around you.

What Is Situationism?

Situationism is the view that human behavior is driven primarily by external circumstances rather than stable internal traits. Instead of asking "what kind of person acts this way?", situationism asks "what kind of situation produces this action?"

The opposite assumption, that behavior flows from character, is so common that researchers treat it as a bias. The fundamental attribution error is our tendency to explain other people's actions by their personality while underestimating the pressure of their circumstances (APA, n.d.). When a coworker snaps at you, you think "they're rude." You rarely think "they just got bad news and have not slept." When a driver cuts you off, they are reckless; when you do it, you had a good reason.

This bias is not a small quirk. It shapes hiring decisions, courtroom verdicts, and how societies treat people who are struggling.

 The Experiments That Changed Psychology

1. Milgram and obedience

In the early 1960s, Stanley Milgram asked ordinary adults to deliver electric shocks to a "learner" (an actor) whenever he answered questions incorrectly. No one forced them. The experimenter simply said "please continue." Around 65 percent of participants went all the way to the highest shock level (Milgram, 1963). The shocks were not real, but the obedience was. Ordinary, kind people kept pressing buttons because an authority figure in a lab coat assured them it was fine.

2. Darley and Latane and the bystander effect

In 1964, a woman named Kitty Genovese was murdered in New York while, according to early reports, dozens of neighbors heard something and did nothing. The full story was more complicated than the headlines, but the case inspired John Darley and Bibb Latane to test helping behavior in the lab. Their finding: the more people who witness an emergency, the less likely any single person is to help. Responsibility diffuses. Each person thinks someone else will act (Darley & Latane, 1968). This became known as the bystander effect.

3. The Stanford Prison Experiment

In 1971, Philip Zimbardo assigned healthy college students to play guards or prisoners in a simulated prison. The study was planned for two weeks and ended after six days because the "guards" became abusive and the "prisoners" became passive and distressed. The study has been criticized on methodological and ethical grounds, and its conclusions should be treated with caution, but it remains one of the most cited illustrations of the idea that roles and contexts can pull people toward behavior they would never predict of themselves.

4. Why the Situation Wins

Situations shape behavior through several well-documented mechanisms:

• Authority: People defer to perceived experts and officials, even when the request feels wrong. Deference is trained into us from childhood and runs on autopilot.
• Diffusion of responsibility: When many people could act, no one feels personally responsible, and inaction becomes the norm everyone follows.
• Conformity: Solomon Asch showed that people will deny the evidence of their own eyes to agree with a unanimous group (Asch, 1956). Wanting to belong is not weakness; it is human wiring.
• Deindividuation: Uniforms, crowds, and anonymity reduce self-awareness and personal accountability, making impulsive or aggressive behavior more likely.
• Stress and scarcity: Sleep deprivation, fear, time pressure, and financial strain narrow attention and reduce self-control. Behavior degrades when resources do.

None of this means character is fictional. It means character is expressed through situations, and some situations overwhelm the best of us.

What This Means for Mental Health

Situationism is not just a classroom curiosity. It has direct consequences for how we understand psychological distress.

1. It reduces shame: Someone who freezes during a panic attack, cannot get out of bed during depression, or stays in a harmful relationship is often judged as weak. But behavior in context is not a character verdict. A person's capacity changes with their circumstances, support, and symptoms. Judging the person instead of the situation adds a second injury to the first.
2. It reframes self-criticism: If you behaved worse than you would have liked last week, the question "what is wrong with me?" is usually less useful than "what was happening to me?" Fatigue, isolation, hunger, conflict, and overload are not excuses, but they are causes. And causes can be changed.
3. It protects you: Once you know how easily authority, crowds, and stress bend behavior, you can build defenses: pause before complying with an order that feels wrong, name an emergency out loud and assign a specific person to help, and notice when an environment, online or offline, is rewarding your worst impulses.

When to Seek Help

If you find yourself repeatedly acting in ways you regret, or feeling trapped in patterns you cannot explain, that is not proof that something is wrong with who you are. It may be a sign that the situation around you, or untreated distress within you, needs attention. A therapist can help you separate what is happening to you from what is happening inside you, and both matter.

The Takeaway

You are not only who you are. You are also where you are. The kindest and most accurate way to understand human behavior, other people's and your own, starts with looking at the situation first. It is a harder way to think than pointing at character, but it is the one the evidence supports, and in practice it is the more forgiving one.

References

1. Milgram, S. (1963). Behavioral Study of Obedience. Journal of Abnormal and Social Psychology, 67(4), 371-378.

2. Darley, J. M., & Latane, B. (1968). Bystander intervention in emergencies: Diffusion of responsibility. Journal of Personality and Social Psychology, 8(4), 377-383.

3. Asch, S. E. (1956). Studies of independence and conformity: I. A minority of one against a unanimous majority. Psychological Monographs, 70(9).

4. American Psychological Association. (n.d.). Fundamental attribution error. APA Dictionary of Psychology.

5. National Institute of Mental Health. (n.d.). Caring for your mental health.

Kehinde Triumph Kehinde Triumph is an undergraduate psychology student at the University of Ibadan and writer interested in how context shapes human behavior. His essays on psychology and culture appear on Substack and Medium.