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What are some reliable and scientifically-backed free online personality tests that can help me better understand myself and my behavior, and which ones are worth trying?

The Myers-Briggs Type Indicator (MBTI) is not scientifically validated, despite its popularity, and has been criticized for its lack of empirical evidence supporting its claims.

The Big Five Personality Traits, also known as OCEAN (Openness, Conscientiousness, Extraversion, Agreeableness, and Neuroticism), are the most scientifically validated and widely accepted personality framework.

The Enneagram personality test measures nine personality types based on emotional fears and motivations, and is widely used in personal and professional development.

The HEXACO Personality Inventory-Revised measures six major dimensions of personality, including honesty-humility, emotionality, extraversion, agreeableness, conscientiousness, and openness to experience.

16Personalities, a free online personality test, has been taken by over 100 million people worldwide and provides accurate and detailed results.

The DISC assessment, another popular personality test, measures four personality traits: Dominance, Influence, Steadiness, and Conscientiousness.

The Holland Occupational Themes, also known as the Holland Codes, categorize individuals into six personality types: Realistic, Investigative, Artistic, Social, Enterprising, and Conventional.

Research suggests that personality tests can be useful for personal and professional development, but their effectiveness depends on how they are implemented and used.

Some free personality tests, such as Truity's Enneagram test, provide detailed reports and resources for personal growth and development.

The TypeFinder, developed by Truity, measures 4 dimensions and 23 facets of personality type, providing a detailed and accurate assessment of an individual's personality.

The Big Five Personality Test, also known as the Five Factor Model, has been widely used in research and has been shown to be a reliable and valid measure of personality. offers a range of free personality tests, including the Big Five Personality Test, the DISC assessment, and the Holland Occupational Themes.

Some websites, such as Truity, offer premium services, including extended reports and personal growth resources, in addition to their free personality tests.

The accuracy of personality tests can depend on the test-taker's honesty and self-awareness, as well as the test's design and validation.

Personality tests can be used in various contexts, including employment, education, and relationships, to help individuals understand their strengths, talents, and traits.

Research suggests that personality tests can be a useful tool for self-discovery and personal growth, but should not be relied upon as the sole means of making important life decisions.

The scientific community continues to debate the validity and reliability of various personality tests, and some tests are considered more scientifically grounded than others.

Some free personality tests, such as 16Personalities, provide detailed type descriptions, relationship and career advice, and coping strategies for dealing with stress and anxiety.

Personality tests can be used to identify areas for personal growth and development, as well as to improve relationships and communication with others.

The field of personality psychology is constantly evolving, and new research and theories are continually being developed and refined.

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