Type C Personality: The Suppressed-Emotion Hypothesis

What Type C personality is

Type C is not a result from any Psychology.com test, and it is not a personality type in the sense that Type A and Type B are: it has no diagnostic category and no test result behind it. It is a hypothesis from psycho-oncology research: the idea that a specific personality style, cooperative, patient, unassertive, and quick to suppress anger and other negative emotion in favor of keeping the peace, might make cancer more likely to develop or progress.

The word cooperative here is doing a lot of work. Type C, as originally described, is almost the mirror image of Type A's hostility: instead of expressing frustration outward, a Type C style holds it in, prioritizes other people's comfort over its own, and presents an even, agreeable surface even under real strain.

The idea entered public conversation in the 1980s alongside a wave of interest in mind-body links to serious illness, and it has stayed in circulation ever since, in books, articles, and casual conversation about who tends to get sick, far more than it has stayed in the research literature that first proposed it.

Where the idea came from

The concept is most closely associated with psychologist Lydia Temoshok, whose 1987 paper in Cancer Surveys, Personality, Coping Style, Emotion and Cancer: Towards an Integrative Model, laid out the Type C profile based on observations of patients with melanoma and other cancers. Temoshok described a cluster of traits: emotional suppression, particularly of anger, a pattern of appeasement and compliance with authority, and a tendency to put other people's needs ahead of one's own.

The theory drew on an older, broader idea sometimes called the cancer personality, which dates back further than Temoshok's work and reflects a much older cultural instinct to look for a psychological explanation behind serious physical illness. Temoshok's specific contribution was to describe the profile with more precision and to propose a biological mechanism, chronic suppressed stress affecting immune surveillance, that could plausibly connect personality to disease.

It is worth being direct about what the original paper was: a theoretical, integrative model built from clinical observation, not a large controlled study establishing that this personality style causes cancer. That distinction matters for everything that follows.

What the evidence actually shows

The honest answer, and the reason this page treats Type C as a hypothesis rather than a fact, is that the cancer link was never established by the kind of evidence that would be needed to confirm it. A 2002 systematic review in the BMJ by Petticrew, Bell, and Hunter examined dozens of prospective studies on psychological coping style and cancer survival or recurrence and found no consistent evidence that coping style, including the suppression and appeasement at the center of the Type C idea, predicts survival or recurrence.

A broader 2004 review by Garssen in Clinical Psychology Review, looking back across three decades of research on psychological factors and cancer development, reached a similar conclusion: no psychological factor had been convincingly shown across a body of studies to influence whether cancer develops in the first place. The review did not rule out any possible influence with certainty, since absence of confirmed evidence is not the same as proof of no effect, but it found nothing solid enough to support the specific Type C claim.

Part of the problem is methodological. Many early studies were small, retrospective, or measured personality after a cancer diagnosis was already known, which makes it easy for a diagnosis to color how a patient answers questions about their own emotional style. Later, better-designed prospective studies simply did not find the effect the original hypothesis predicted.

What it is often confused with

Type C is frequently mixed up with Type A because they share a letter-naming scheme and a cardiology-and-oncology research lineage, but the two describe nearly opposite emotional styles: Type A expresses frustration outward and competes visibly, while Type C suppresses frustration and avoids conflict. The pattern described on our Type A personality page and the one described here sit at very different ends of how negative emotion gets handled.

It also gets confused with Type D personality, the subject of its own explainer page, because both involve holding difficult emotion inside rather than expressing it. The distinction is that Type D, described by researcher Johan Denollet starting in the mid-1990s and formalized in 2005, combines negative affectivity, a general tendency toward worry and distress, with social inhibition, a reluctance to express that distress to other people, and it has a real, if debated, cardiology research literature behind it. Type C's proposed cancer link never reached that same level of support.

It is also worth stating plainly that this is not a diagnosis a doctor or therapist would give. Being unassertive, self-sacrificing, or slow to express anger are ordinary personality traits, not warning signs, and none of them predicts a cancer outcome on their own.

What to do if you recognise yourself

If the description, cooperative to a fault, uncomfortable expressing anger, quick to prioritize other people's needs, sounds familiar, that recognition is worth taking seriously as a pattern to understand better, just not as a health warning. Suppressing anger and other difficult emotion consistently is linked in research to higher day-to-day stress and lower relationship satisfaction, independent of any cancer question entirely.

Our Stress Level Test is a reasonable starting point if the suppression pattern feels tied to a heavier stress load than usual, since it gives a plain-language read on where stress currently sits without requiring any assumptions about cause. Our Mental Health Assessment is a broader option if low mood, anxiety, or other symptoms are part of the picture alongside the suppression pattern.

For anyone with an actual cancer diagnosis or family history, the more useful move is a conversation with an oncologist or a therapist experienced in health psychology about managing stress and expressing difficult emotion, not a search for a personality explanation for the illness itself. Illness is not evidence of a personality flaw, and this page exists partly to say that plainly.

What the research says, in plain terms

The fair, evidence-based summary is this: Type C is a real historical hypothesis with a specific origin and a specific proposed mechanism, and it has not held up under systematic review. It belongs in the same category as several other mid-twentieth-century mind-body personality theories that generated genuine scientific interest, produced some early positive findings, and did not survive better-designed, larger studies.

This does not mean stress, emotional suppression, or coping style are irrelevant to health in every sense. Chronic stress has well-documented effects on immune function and general wellbeing. What the evidence does not support is the specific, stronger claim that a suppressed, appeasing personality style causes or worsens cancer, which is the claim this page declines to repeat as fact.

How Type C relates to Type A and Type B

Type A, Type B, and Type C are grouped together on Psychology.com because they are commonly searched together and share a research era, the mid-to-late twentieth century, when personality-and-disease theories were a major focus of behavioral medicine. Structurally, though, Type C is different from its neighbors: Type A and Type B come from an actual test, our Type A Personality Test, that scores real, verified components, time urgency, achievement striving, and hostility, with a documented, if partial, link to cardiovascular health.

Type C has no equivalent test on this site and no result key, because there is no validated instrument that would responsibly assign someone a Type C score. Anyone curious about where they land on the emotional-expression spectrum that Type A and Type C sit at opposite ends of can take the Type A Personality Test and look specifically at the hostility component: a very low hostility score paired with high agreeableness in daily life is the closest honest approximation this site offers to the Type C description, without claiming any health meaning from it.