Olivia,
My degree is in Psychology and my husband like I said in a precious post was a manager for many years. He has dwegrees in Psych, Business and Social work. I think have an idea what they are looking for.
For example the roommate question you mentioned. They wanted to know can you be flexible enough to handle someone who is different from you. In roommate situations you will meet people of different backgrounds, faiths, sleeping habits and neatness. In that type of setting you need to be flexible enough to live with the majority of CM. If neatness is a must than you have just eliminated about half of the 18-25 year olds I have known as potential roommates. This would be a problem for Disney and they would assume this lack of flexibility is true in every aspect of your life.
It is the downfall of these kinds of tests as apposed to interviews. you have no way to explain your answer. You may have thought they want a neat hard working CM. What they want most is a team player.
Basically what they want is someone who can get along with 90% of the people they meet (not like.. just get along) someone who can follow orders with a smile but has enough self respect and confidence to report a problem and have a solution to said problem when they are asked.
If you get to take the test again ask yourself on each question what would a team player do. What would someone who had to consider the customer is always right do? If there is a problem how could you say that so that it is constructive instead of a complaint?
Hope this helps a little. Don't give up on your dream just yet if you have one more chance you have one more chance to succeed, Also the next time you are at Disney ask as many CM's as you can what they did and what was there experience with the tests. They are the key to Disney's true motives.
Sending Pixi dust to you and your mom