Myers-Briggs: a personality test based on Jungian psychology that classifies people according to 4 axes, with a designation of 4 letters (INTJ, ENFP, ESTP) referring to where a person falls on each axis. Most respectable psychologists don't like using it in a professional capacity: it focuses on each axis having people only be at one end or the other, which ignores the fact that most people are very close to average; if height was divided only into "more than 5.5 feet" and "less than 5.5 feet," that information wouldn't be very relevant or accurate either (when I took the test online for the first time, I was almost exactly in he middle of one axis: INT- instead of definitively INTJ or INTP), and including the middle ground would result in too many people getting "neutral" on too many axes to produce relevant, specific information. On the other hand - as I first read on PlotToPunctuation - fiction works best when the characters are distinguished as much as possible and that writers could have very good luck using these descriptions to get ideas for how different characters could respond to crises differently, and I do find that a cast of characters with only has 1 or 0 neutral spaces each is easier and more interesting for me to work with then if a lot of them have 2-4 blanks. Managing character flaws vs. virtues: The most important thing I've read about character flaws is that they cannot simply be brought up at an early, inconvenient time and then somehow solved right before it becomes important at the end; rather, a flaw has to cause serious problems long before the end of the story, and if it's going to be dramatically solved at the end, then the character has to have been seen trying to change beforehand. One specific thing I like to do when contrasting the best parts of a character with the worst: make them both into the same thing. For example, one character that I'm working on would be considered Protective when her main trait is a positive but Vindictive when the same trait is a negative: she cares a great deal about people she deems "good," especially her closest friends, but she has no sympathy for anyone she deems "evil" and tends to get her friends in trouble when she over-reacts to a perceived threat against them. Another character is Creative as a positive but Indecisive as a negative: he can come up with a bunch of very good, intelligent, workable ideas, but needs to be forced to follow through on any of them, and can get his colleagues in trouble if his usual superior isn't around to keep him from hesitating for too long. Shallower Trivia: would the person's soundtrack be pop, rock, or metal; is the person more of a Snake, a Hawk, or a Lion; et cetera... What do you guys think? Do you do any of this too?