Defense mechanisms are unconscious psychological strategies that protect us from anxiety, shame, guilt, grief, and emotional overload. They help the mind soften painful realities, redirect threatening impulses, and preserve a stable sense of self when life becomes too difficult to face directly.

These defenses are not always unhealthy. Some help us endure crisis, postpone overwhelming emotions, or transform distress into useful action. Others distort reality, damage relationships, and keep us from learning. A defense mechanism becomes problematic when it protects us from discomfort at the cost of honesty, intimacy, responsibility, or growth.

Understanding defense mechanisms helps us recognize the hidden ways we cope with emotional pain. With awareness, our defenses can become less rigid, less destructive, and more adaptive.

What Is a Defense Mechanism?

A defense mechanism is an unconscious psychological process that protects the mind from anxiety, guilt, shame, painful emotion, or inner conflict. Defense mechanisms help us manage what feels emotionally threatening by altering awareness, softening painful realities, redirecting impulses, or reshaping how we interpret ourselves and others.

Sigmund Freud introduced the concept of psychological defense in the 1890s while studying how the mind protects itself from ideas and feelings that feel incompatible with the ego. Later, Anna Freud gave the concept its classic psychoanalytic form in The Ego and the Mechanisms of Defense, describing defenses as ways the ego wards off anxiety and exercises control over impulses, affects, and instinctive urges (Freud, 1966).

Defense mechanisms are not simply signs of pathology. George Vaillant emphasized that defenses are often normal and adaptive responses to painful circumstances. They allow people to continue functioning when direct awareness of conflict, grief, anger, fear, or desire would feel overwhelming (Vaillant, 1998). In this sense, defenses are a coping strategy that serve as a common tool for psychological adaptation; they are not merely symptoms of an illness.

Susan David, an instructor in psychology at Harvard University, explains that coping strategies “arise from discomfort with ‘negative’ emotions” (David, 2016). Dr. Jerome S. Blackman, professor of psychiatry and licensed psychoanalyst, says that defense mechanisms work as circuit breakers, defusing the flow of energy when the current gets too strong. Blackman defines defenses as “mental operations that remove components of unpleasurable affects from conscious awareness” (Blackman, 2004).

However, defenses can also become costly. A defense may protect us from emotional pain in the short term while distorting reality, limiting intimacy, avoiding responsibility, or blocking growth over time. Vaillant argued that context and flexibility matter: a defense becomes more maladaptive when it is rigid, overused, disconnected from present reality, or harmful to relationships (Vaillant, 1998).

Phebe Cramer adds an important distinction: defense mechanisms are different from ordinary coping strategies. Coping usually involves conscious, intentional efforts to manage stress, such as seeking support, solving a problem, or deliberately calming oneself. Defense mechanisms, by contrast, operate largely outside awareness. They reduce distress by changing internal experience, sometimes without changing the external problem at all (Cramer, 2006).

This distinction helps explain why defense mechanisms can be difficult to recognize in ourselves. We may notice the behavior, but not the defensive purpose behind it. A person may rationalize a harmful choice, project anger onto someone else, deny a painful truth, or intellectualize grief without realizing that the mind is trying to protect itself from unbearable emotion.

In everyday life, defense mechanisms function like psychological buffers. They protect self-esteem, preserve emotional balance, and help us move through experiences that might otherwise overwhelm us. At their best, defenses give us time to adapt. At their worst, they keep us from seeing clearly. The goal is not to eliminate defenses altogether, but to recognize when they are protecting life and when they are narrowing it.

When Do We Use Defense Mechanisms?

Vaillant (1998) identifies several situations in which defense mechanisms commonly appear:

1. to keep feeling affects within bearable limits during life crises (e.g., following a death or divorce);
2. to restore emotional balance by postponing or redirecting impulses (e.g., sexual drives, anger);
3. to rebalance after major life changes (e.g., following unexpected promotion or illness);
4. to handle unresolvable conflicts with people whom we cannot bear to leave (e.g., our boss, lover);
5. to survive major conflicts with conscience (e.g., supporting an unethical cause or candidate). 

We use psychological strategies often. None of us are immune to these hidden gems of psychological health and pathology. Believing we are above the nonsense of psychological games is, well, just denial.

The following chart offers a quick overview of several common defense mechanisms before we look more closely at six frequently discussed examples.

A Closer Look at Common Defense Mechanisms

Almost anything can be used as a defense, from screaming at the children to golfing. We find ways to defuse emotions, bringing our systems back to a comfortable homeostasis. Blackman explains, “Whatever the mental activity or behavior, if it shields you from experiencing unpleasant emotion, it is defensive” (Blackman, 2004). Blackman lists 101 defenses in his book.

The following six defense mechanisms are especially common in introductory psychology and clinical discussions and are explored below:

• Repression
• Denial
• Projection
• Displacement
• Regression
• Sublimation

Repression:

Repression is similar to its cousin suppression. The major difference is that repression occurs unconsciously while suppression is a conscious act. Sigmund Freud emphasized that thoughts and feeling affects are individual components. In the case of repression, the thought associated with a feeling affect is repressed while the feeling affect remains.

Unmitigated repression presents a problem. Our denial of personal temptations prevents corrective and protective action. Perhaps, repression is involved when notoriously conservative (liberal) politicians are caught violating standards that they vehemently protect. They repress thoughts associated with an impulse and consciously keep their tidy conservative self image, but occasionally act on contrary impulses in an airport’s bathroom stall.

Denial:

​Denial is often referred to as disassociation. We deny dissociate facts from the object they support. We excuse the obvious. Unsupported conspiracies thrive under the protective sheath of denial. Evidence is denied and emotional reasoning triumphs. Vaillant warns, “In human adjustment, it seems important to experience anxiety in optimal amounts – too little inhibits growth and too much precludes functioning. What is important is that suppression mitigates anxiety, but dissociation abolishes it” (Vaillant, 1998).

Denial is a pathologic defense that inhibits growth. Adequate information is available for reconsidering a belief but we deny it. The discomfort of changing produces too much anxiety, so, we deny anything that rocks the boat. For example, the smoker denies his shortness of breath, instead of acknowledging the detrimental impact of smoking to his health.

Projection:

Projection, often referred to has externalizing, pushes internal thoughts, judgements and feelings onto external sources. Blackman describes it as, “Where you experience a part of your mind as ‘external’ to yourself. You might think someone or ‘society’ will criticize you, when actually you feel self-critical” (Blackman, 2004). I project my frustration onto other drivers. For instance, occasionally, I miscalculate and cut off another driver, causing them to brake. Without a hand gesture or a facial expression from them, I project my discomfort onto them, “they shouldn’t be driving so fast.”

Recently, a facebook poster responded to my research article on Catastrophizing, “Whoever wrote this is projecting enough to run an Imax multiplex.” Perhaps, since I have no idea what he is referring to, he inferred his own meaning onto the article and then projected his inferred meaning onto me, the author.

Displacement:

Displacement allows thoughts and feeling affects to remain connected but outward expression is directed toward a less dangerous object. Sometimes reacting to emotions is dangerous. The person we are angry with either intimidates or frightens us. We suppress our emotionally loaded response out of self preservation. However, we then retaliate against an easier target, diffusing emotional energy.

Robert Sapolsky, a professor of biology and neurology at Stanford University, wrote in his detailed book on human behavior: 

“Stress-induced (aka frustration-induced) displacement aggression is ubiquitous in various species. Among baboons, for example, nearly half of aggression is this type—a high-ranking male loses a fight and chases a subadult male, who promptly bites a female, who then lunges at an infant” (Sapolsky, 2018).

Biologically, displaced aggression reduces stress induced hormone levels. Sapolsky quips: “Giving ulcers can help you avoid getting them” (Sapolsky, 2018).

Regression:

​Ideally we progress. Wisdom from experience can help ineffective defensive strategies develop into effective responses. Yet, life is seldom linear. We grow and then slip backwards a few steps. Vaillant defines regression as the retreat from “adaptive mechanisms at one level to those at a less mature level” (Vaillant, 1998).

These regressions can be seen as bedwetting for an older child or an adult returning to repression and denial during traumatic events. 

Sublimation

Sublimation is often considered a mature defense mechanism. Basically, a morphing of dissociation into a healthy redirecting of emotional energy. Vaillant compares sublimation with repression, he wrote, “Sublimation channels emotions; repression dams them” (Vaillant, 1998). In sublimation impulses and thoughts remain intact and conscious. Accordingly, we diffuse improper impulses by redirecting our energy.

For example, sublimation is the defense I used to redirect powerful emotions from a career in law enforcement. Instead of over indulgence in whisky or displacing frustration by being a brute to my wife and children, I redirected it to an intensive study of human behavior, leading to a degree in psychology, and the creation of Flourishing Life Society (The predecessor to Psychology Fanatic).

​The Hierarchy of Defense Mechanisms

Defense mechanisms are not all equally adaptive. Di Giuseppe and Perry (2021), drawing from the Defense Mechanisms Rating Scales tradition, describe defensive functioning as a hierarchy. Vaillant’s longitudinal work helped establish that an individual’s defensive style is meaningfully related to adult adjustment and psychological health (Vaillant, 1976). Some defense styles help people face reality while regulating emotion. Others reduce distress by distorting reality, avoiding responsibility, or acting out conflict.

This hierarchy does not mean that people permanently belong to one category. Under stress, a person may temporarily rely on less mature defenses. With growth, support, and self-awareness, defensive functioning may become more flexible and adaptive.

This hierarchy is best understood as a continuum of flexibility. Mature defenses generally preserve contact with reality while regulating distress. Less adaptive defenses may reduce anxiety quickly but often do so by distorting perception, disowning responsibility, or expressing conflict through behavior.

​When Defense Mechanisms Become Maladaptive

The internet has expanded the game. We can twist our ego-defending mechanisms that are flat out pathological into beautiful psychological prose, giving others advice on how to incorporate similar faulty mechanisms. Surprisingly, the adoring internet crowd spurs on maladaptive reactions, laud our errors, and provide a protective barrier of superficial acceptance.

Glorification of Maladaptive Defense Mechanisms

​Learning from the internet, and especially social networks, requires a lot of skepticism. Anyone can publish a site, author a book, or give advice with a tone of expertness. A page may adopt a professional name, utilizing powerful buzzwords like: psychology, science, or financial planner. But a quick glance of the content suggests something much different.

With some foundational knowledge, we can identify the hollow, misguided or helpful material. Unfortunately, many internet surfers are desperately seeking help and the bounteous information flowing through social media is attractive. Accordingly, they are easily duped when the misguided dogma feels good; and duping those without sufficient knowledge to evaluate the content.

Defense mechanisms feel good. They provide a reward that powers their continued use. They relieve displeasure. Accordingly, websites, media, and socially supported outlets thrive when they provide externally created escapes from discomforting emotions. The mal-adaptiveness of many of the mechanisms are duplicated on the web, giving visitors comfort in their own mal-adaptiveness. Denial, avoidance, projection, and acting out are all there on our digital devices, beckoning users to adopt broken ways of thinking.

Soothing Our Sorrows

The dissatisfied seeker of fulfillment, exposes their loneliness in words. Yet, although apparent to some, the narrator overlooks their own defensive stances. Perhaps, some of my writings expose my personal fears.

A recent ‘psychology; site tweeted she was not anti-social; she just doesn’t like to deal with two-faced and hollow people (denial). A few minutes later she tweeted, don’t worry if what you say hurts other people, they are responsible for their own happiness (displacement, repression). With thousands of likes and shares, these damaging defense mechanisms for social anxiety teach destructive relationships skills, lauding them as profound and healing.

Associated Concepts

• Ego Psychology: This is a school of psychoanalysis that focuses on the role of the ego, or the sense of self, in behavior and development. Ego psychology emphasizes how the ego manages internal conflict, adapts to reality, regulates emotion, and uses defense mechanisms to protect psychological stability.
• Unconscious Mind: The unconscious mind refers to mental processes, feelings, memories, motives, and conflicts that operate outside conscious awareness. Defense mechanisms often arise from unconscious activity, protecting the individual from thoughts or emotions that feel too threatening to fully acknowledge.
• Ego Development: This is a conceptual model for understanding the progressive change of personality in response to life experiences. Ego development involves the formation of identity, expansion of consciousness, and increasingly complex ways of understanding the self, others, and reality.
• Coping Mechanisms: Coping mechanisms are strategies people use to manage stress, emotional discomfort, and difficult life circumstances. Unlike defense mechanisms, coping strategies are often more conscious and intentional, although both serve the larger purpose of reducing distress and restoring emotional balance.
• Self-Deception: Self-deception occurs when a person avoids, distorts, or misinterprets reality in order to protect the self from painful awareness. Many defense mechanisms, such as denial, rationalization, and projection, function as forms of self-deception that reduce anxiety while limiting honest self-understanding.
• Reality Testing: Reality testing is the ability to distinguish internal thoughts, feelings, fears, and wishes from external reality. Mature defenses tend to preserve reality testing, while more maladaptive defenses may distort perception, leading a person to misread events, motives, or relationships.
• Immature Defenses: Immature defenses are less adaptive psychological strategies that reduce distress by distorting reality, avoiding responsibility, or expressing conflict indirectly. They may provide short-term emotional relief, but when used rigidly or repeatedly, they can interfere with relationships, self-awareness, and psychological growth.

​A Few Words by Psychology Fanatic

Defense mechanisms are part of being human. They are not moral failures or signs that someone is weak, dishonest, or unwilling to grow. Often, they are the mind’s first attempt to protect itself from emotions that feel too intense, conflicts that feel unsolvable, or truths that arrive before we are ready to face them.

This is why struggling people rarely need a stranger’s lecture on their defenses. They need safety, patience, and sincere positive regard. When people feel attacked, their defenses usually harden. When they feel understood, those same defenses may soften enough for reflection, responsibility, and change.

We are all moving through life with our individual hurts, triumphs, fears, and loyalties. Human interaction will always test our emotional skills, but it also offers the security in which healthier adaptation becomes possible. With supportive relationships, growing self-awareness, and more flexible defenses, we can navigate the rough waters of emotion with greater honesty, humility, and curiosity.

Last Update: July 4, 2026

​ References:

Blackman, Jerome S. (2004). 101 Defenses: How the Mind Shields Itself. Brunner-Routledge. ISBN: 9780415946940
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Cramer, Phebe (2006). Protecting the Self: Defense Mechanisms in Action. The Guilford Press; 1st edition. ISBN: 9781593852986
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David, Susan (2016). Emotional Agility: Get Unstuck, Embrace Change, and Thrive in Work and Life. Avery; First Edition. ISBN-10: 1592409490
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Di Giuseppe, Marco; Perry, J. Christopher (2021). The hierarchy of defense mechanisms: Assessing defensive functioning with the Defense Mechanisms Rating Scales Q-Sort. Frontiers in Psychology, 12. DOI: 10.3389/fpsyg.2021.718440
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Freud, Anna (1966). The Ego and Mechanisms of Defense. ​International Universities Press. Original work published in 1936. ISBN: 9780823668717
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Sapolsky, Robert (2018). Behave: The Biology of Humans at Our Best and Worst. Penguin Books; Illustrated edition. ISBN: 9780143110910
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Vaillant, George E. (1998). Adaptation to Life. Harvard University Press; Reprint edition. ISBN: 9780674004146
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Vaillant, George E. (1976). Natural History of Male Psychological Health: V. The Relation of Choice of Ego Mechanisms of Defense to Adult Adjustment. Archives of General Psychiatry, 33(5), 535-545. DOI: 10.1001/archpsyc.1976.01770050003001
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