The Ultimate Personality Analyzer

Not all personality tests are created equal! Generally, in personality psychology, 4 measures determine the strength of a test. They are:

• Standardization: Standardization ensures that everyone who takes a test is tested by the same measures and mechanisms. If half of the users completed a self-report test, while the other half did not, that test would have low standardization, and the scores wouldn't be reliable.
• Objectivity: Objectivity refers to the test's ability to neutralize any individual feelings, beliefs, or biases that the test administrator might have. For example, if I personally believed that creative people were more moral, and then used a creative arts test in order to determine users' levels of empathy and morals as a result, that test would not be objective.
• Reliability: Reliability refers to whether or not a test and its results hold up over time. Though some changes over time could be normal, it's generally a bad sign if someone receives completely different results each time they take a personality test.
• Validity: Validity describes whether or not the test actually describes what it aims to describe. For example, if you ask participants to run a mile and use their running times to determine their mental resilience, that wouldn't be a valid test (because run times will be greatly influenced by the user's physical fitness levels). This is likely the most important measure for a personality test.