This week, February 11 to 18, is National Friendship Week. If you have a lot of friends make sure to wish them a happy day or week.

Did you know that the type of friends you prefer reveals a lot about your personality? Find out what your friendships say about you.

Psychologist Dr. Elayne Kahn, co-author of "1001 Ways You Reveal Your Personality," writes that if you have just one close friend you probably don't trust people right off the bat but once you make friends, you are very loyal.

If you have friends that are of your own sex only you are a traditional sort of person. Boys should be boys and girls should be girls.

If your friends are of the opposite sex only, you enjoy being the center of attention, but don't like competing for it. Intimacy is very important to you.

Friends you just party with means you love to socialize, but don't like people getting too close. You are very independent and want to stay that way.

Friends from the workplace means that all things in your life are geared toward making your career as successful as possible.

Different friends for different occasions. You are well-organized, but a bit standoffish and don't like to become too involved with people.