Updated on
September 9, 2026
Type A vs Type B Personality: Traits, Stress and Meaning
Compare Type A and Type B personality traits, from drive and time pressure to patience and reflection. Learn what modern psychology says about the theory.
What are Type A and Type B personalities?
Type A and Type B are historical behaviour patterns developed by cardiologists Meyer Friedman and Ray Rosenman. Type A describes greater time urgency, competitive striving, impatience and sometimes hostility; Type B describes lower urgency and competitiveness. They are not diagnoses or fixed learner types, and later evidence does not support the whole Type A pattern as a meaningful predictor of coronary heart disease.
Type A and Type B are historical behaviour patterns, not fixed personality diagnoses. Type A describes greater time urgency, competitive striving, impatience and sometimes hostility. Type B describes lower urgency and competitiveness, with a calmer pace. Most people do not fit neatly into either box, and behaviour changes with context.
Cardiologists Meyer Friedman and Ray Rosenman developed the distinction while investigating coronary heart disease. Early studies reported an association, but later evidence did not support the whole Type A pattern as a useful predictor of heart disease. This page owns the Type A versus Type B comparison; our personality theories guide covers the wider field.
Myrtek's (2001) meta-analysis combined prospective studies involving 74,326 people. It found no meaningful association between the global Type A pattern and coronary heart disease. In a classroom, this means a teacher should describe the behaviour they observe, check the context and avoid turning a broad historical label into a prediction about a learner.
Key takeaways
- Type A and Type B began in cardiology. They were proposed as contrasting behaviour patterns linked to coronary risk, not as a theory of learning.
- The labels describe tendencies, not two kinds of person. Someone can be hurried in one setting and patient in another.
- The broad health claim did not hold up. A large meta-analysis found no meaningful association between the global Type A pattern and coronary heart disease.
- Anger and hostility deserve separate attention. Later research found a modest risk signal, but that is not the same as saying ambition causes heart disease.
- Teachers should observe behaviour and context. Adjust deadlines, feedback or task structure without labelling a learner Type A or Type B.
Type A vs Type B at a Glance
The main difference is the level of urgency, competitive striving and impatience shown in a situation. Type A behaviour is more hurried and competitive. Type B behaviour is less driven by time pressure and competition. Neither pattern is automatically good, bad, healthy or unhealthy.
On a small screen: swipe across the table to compare both patterns.
On a smaller screen, swipe across to read all columns.
| Feature | Type A pattern | Type B pattern |
|---|---|---|
| Time | Urgent and clock-conscious | Less hurried |
| Competition | More likely to compare and compete | Less driven by comparison |
| Delay | May show impatience | May tolerate waiting more easily |
| Work pace | Fast and hard-driving | Steady and less pressured |
| Evidence boundary | Does not diagnose stress or heart disease | Does not mean lazy or healthier |
These are descriptions of behaviour, not predictions about ability. A learner who rushes a timed calculation may work patiently on an art portfolio. A colleague who enjoys competition may still collaborate well when roles and expectations are clear.
Type A Behaviour Pattern
Friedman and Rosenman described Type A behaviour as a combination of intense striving, competitiveness, time urgency and hostility. The pattern was assessed through interviews and later questionnaires. It was never simply a synonym for being organised or ambitious.
- trying to complete more work in less time;
- monitoring deadlines closely;
- becoming impatient when progress is slow;
- turning neutral tasks into competitions;
- showing irritation or hostility under pressure.
Some features can be useful. Preparation, persistence and purposeful effort can support achievement. The problem is the assumption that every driven person shares the whole pattern. A teacher should name the visible behaviour, such as rushing or interrupting, rather than telling a learner that they have a Type A personality.
Type B Behaviour Pattern
Type B was the contrast category. It described people who showed less time urgency, lower competitiveness and a more relaxed pace in the settings being studied. It did not mean passive, unintelligent, unmotivated or immune to stress.
For example, one learner may take time to compare several interpretations before writing. That can produce careful work, but the learner may still need an interim deadline. The useful observation is about pace and task management, not a permanent personality identity.
Type B should not become a compliment that makes Type A sound defective. Both labels compress several behaviours into one package. Modern Big Five personality traits give a more detailed, dimensional account.
Origins of Type A and Type B Theory
Friedman and Rosenman introduced the behaviour pattern in medical research during the 1950s. Their 1959 JAMA study compared selected groups of men and reported more cardiovascular findings in the Type A group. The design showed an association in those groups; it could not establish a general causal rule for all people.
The Western Collaborative Group Study later followed employed men aged 39 to 59. Its 1975 report linked the Type A pattern with coronary heart disease during about eight and a half years of follow-up. The result made the theory influential in medicine and popular culture.
The history also includes a conflict-of-interest warning. Petticrew, Lee and McKee (2012) documented sustained tobacco-industry funding and promotion of Type A research. Stress and personality offered an alternative explanation that could distract from the established harms of smoking. This makes the topic a useful lesson in evaluating research funding as well as research design.
What the Heart-Disease Research Found
The evidence changed as larger and longer studies accumulated. A 22-year follow-up of the Western Collaborative Group cohort found no significant association between Type A or Type B behaviour and all-cause mortality (Shoham-Yakubovich et al., 1988).
Myrtek (2001) combined prospective studies involving 74,326 participants. The estimated association between the global Type A pattern and coronary heart disease was effectively zero. Hostility had a statistically significant association, but the effect was very small and had little practical value for prediction.
Chida and Steptoe (2009) separately reviewed anger and hostility. They found modest associations with future coronary events in initially healthy people and with poorer outcomes among people who already had coronary disease. This supports studying specific emotional and behavioural processes. It does not support diagnosing heart risk from a Type A label.
Evidence boundary: Type A does not mean heart disease. Type B does not mean better health. Medical risk depends on many factors and belongs with qualified health professionals, not classroom personality labels.
Are Type A and Type B Real Personality Types?
The terms are real historical constructs, but they are weak as a complete map of personality. They combine different tendencies into two broad categories and encourage people to treat a continuum as a binary choice. Measures also varied between studies, which made results harder to compare.
Modern personality research usually measures traits on continuous scales. The Big Five describes openness, conscientiousness, extraversion, agreeableness and neuroticism. A person receives a profile across all five rather than being placed into one of two boxes.
Poropat's (2009) education meta-analysis found associations between academic performance and several Big Five traits, especially conscientiousness. That result concerns continuous traits and does not validate Type A or Type B learner categories. Use our guides to personality types and introversion versus extraversion to compare other popular classifications without merging their query jobs.
Memory line: Pattern, not person.
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Accessible text version
The study note defines Type A and Type B as historical behaviour patterns from cardiology, not fixed personality diagnoses. Type A includes time urgency, competitive striving, impatience and possible hostility. Type B includes lower urgency, less competition and a calmer pace, but does not mean lazy or unmotivated.
The evidence timeline states that an early selected-sample study reported an association in 1959, a study of employed men reported higher coronary risk in 1975, and a 2001 meta-analysis found no meaningful link for the global Type A pattern. Specific anger and hostility may carry a small risk signal.
Modern psychology uses continuous traits such as the Big Five rather than forcing people into two boxes. In class, observe the behaviour, check the task and context, adjust support and do not label the learner. The evidence boundary says Type A does not mean heart disease and Type B does not mean better health. The memory line is: Pattern, not person.
Sources: Friedman and Rosenman (1959); Rosenman et al. (1975); Myrtek (2001); Poropat (2009).
Type A and Type B Examples
A workplace example is a project deadline. One colleague checks the clock, pushes for rapid decisions and becomes frustrated by discussion. Another wants more time to compare options. Those behaviours resemble the two patterns, but workload, role, experience and the importance of the decision may explain the difference.
In daily life, a driver may become impatient in slow traffic but show no urgency while cooking with friends. The change across situations is evidence against a rigid label. It is better to describe when a behaviour appears and what seems to trigger it.
In school, a learner might race through a retrieval quiz, then repeatedly check classmates' scores. Another may answer slowly but accurately and miss the final question. The first needs a cue to check reasoning; the second may need visible time markers. Neither needs a personality diagnosis.
Using the Model in Education
Type A and Type B are not learning theories. Their classroom value is limited to critical psychology and careful observation. Teachers should respond to the behaviour and task conditions that are visible.
- Describe the behaviour. Record rushing, clock-checking, delayed starts or irritation without attaching a type.
- Check the context. Ask whether time pressure, public comparison, unclear instructions or workload changed the response.
- Adjust one condition. Add a checkpoint, remove a speed ranking, provide planning time or rehearse a calm response to feedback.
- Review the effect. Look for change across tasks before inferring a stable tendency.
This approach supports intrinsic motivation without assuming that every competitive learner is Type A. It also avoids the confirmation bias that occurs when a label makes teachers notice only matching behaviour. Broader choices about effort and goals belong with the dedicated guide to motivation theories.
Limitations and Criticisms
The model compresses several distinct features into two labels. Time urgency, hostility, competitiveness and work involvement need not move together. Treating them as one package hides which feature matters and why.
The early research also had limited populations. The Western Collaborative Group Study involved employed middle-aged men, so its result could not automatically generalise across sex, age, culture or occupation. Later measures and samples produced inconsistent results.
Popular use adds a further problem. Online quizzes often treat Type A as productive and Type B as relaxed, then invite self-diagnosis. This turns a contested health construct into an identity label. For a broader account of how psychologists evaluate classifications, return to theories of personality.
Frequently Asked Questions
Type A and Type B are best understood as historical shorthand for differences in urgency and competition. They do not diagnose health, ability or motivation. The answers below separate the popular labels from the evidence and show why context matters.
What is the main difference between Type A and Type B?
Type A describes more time urgency, competitive striving and impatience. Type B describes lower urgency and competition. These are broad behaviour patterns, not two fixed kinds of person.
Can someone be both Type A and Type B?
Yes. People can show features of both patterns, and the balance can change with the task or situation. A binary label loses that variation.
Is Type A personality linked to heart disease?
The early studies reported an association, but a later meta-analysis found no meaningful association for the global Type A pattern. Anger and hostility show a smaller, more specific risk signal.
Is Type B personality lazy?
No. Lower urgency and competitiveness do not show low ability or motivation. A less hurried person may work carefully, persist for longer or compete only when the task requires it.
Should teachers identify Type A and Type B learners?
No. Teachers can discuss the model as historical psychology, but support should follow observed behaviour, context and need rather than a personality label.
Further Reading
- Association of Specific Overt Behavior Pattern With Blood and Cardiovascular Findings
Friedman and Rosenman (1959). - Coronary Heart Disease in the Western Collaborative Group Study
Rosenman (1975). - Meta-analyses of Prospective Studies on Coronary Heart Disease, Type A Personality, and Hostility
Myrtek (2001). - Type A Behavior Pattern and Coronary Heart Disease: Philip Morris's Crown Jewel
Petticrew, Lee and McKee (2012). - A Meta-analysis of the Five-Factor Model of Personality and Academic Performance
Poropat (2009).
References
Chida, Y., & Steptoe, A. (2009). The association of anger and hostility with future coronary heart disease: A meta-analytic review of prospective evidence. Journal of the American College of Cardiology, 53(11), 936-946.
Friedman, M., & Rosenman, R. H. (1959). Association of specific overt behavior pattern with blood and cardiovascular findings. JAMA, 169(12), 1286-1296. https://doi.org/10.1001/jama.1959.03000290012005
Myrtek, M. (2001). Meta-analyses of prospective studies on coronary heart disease, Type A personality, and hostility. International Journal of Cardiology, 79(2-3), 245-251. https://doi.org/10.1016/S0167-5273(01)00441-7
Petticrew, M. P., Lee, K., & McKee, M. (2012). Type A behavior pattern and coronary heart disease: Philip Morris's Crown Jewel. American Journal of Public Health, 102(11), 2018-2025. https://doi.org/10.2105/AJPH.2012.300816
Poropat, A. E. (2009). A meta-analysis of the five-factor model of personality and academic performance. Psychological Bulletin, 135(2), 322-338. https://doi.org/10.1037/a0014996
Rosenman, R. H., Brand, R. J., Jenkins, C. D., Friedman, M., Straus, R., & Wurm, M. (1975). Coronary heart disease in the Western Collaborative Group Study: Final follow-up experience of 8 1/2 years. JAMA, 233(8), 872-877. https://doi.org/10.1001/jama.1975.03260080034016
Shoham-Yakubovich, I., Ragland, D. R., Brand, R. J., & Syme, S. L. (1988). Type A behavior pattern and health status after 22 years of follow-up in the Western Collaborative Group Study. American Journal of Epidemiology, 128(3), 579-588.
