Personality
Free downloadable tests taken in group are below, these were the shortest and simplest tests that rendered the same results as longer ones (most are 70ish questions):
Big 5 Personality Test (Brief)
Myers Briggs Personality Test (Brief)
Other Resources
Resources:
Temperament and Personality: Key Differences & Similarities
Temperament and Personality: What is the connection?
Is Temperament the Same as Personality?
What Is the Difference Between a Personality Type and a Personality Trait? | True You Journal
5 Important Personality Theories
Myers & Briggs' 16 Personality Types | True You Journal