Applied psychology uses the ideas of psychology in different fields, such as health, school, sport and environmental studies. Having a master's degree in applied psychology opens multiple career doors for graduates. The American Psychological Association states that according to statistics from the Department of Labor, opportunities for people with a graduate degree in psychology will increase by 10 to 20 percent in 2010. Since this type of degree allows graduates to work in multiple fields, there is plenty to do with a master's in applied psychology. When preparing for a career, soon-to-be graduates can keep a couple of these fields in mind.