The best way to answer this question is to have a trial run at being a psychology student; and the brilliant news is that thanks to Professor Paul Bloom and the Open Yale Course initiative you can do just that for free, in your own time.
Open Yale Courses provide lectures and other materials from selected Yale College courses to the public free of charge. Each course includes a full set of class lectures produced in high-quality video accompanied by such other course materials as lecture transcripts and suggested readings. As with all the Open Yale Courses, the introduction to psychology course is designed for a wide range of people around the world, among them self-directed and life-long learners, educators, and high school and college students.
What do your dreams mean? Do men and women differ in the nature and intensity of their sexual desires? Can apes learn sign language? Why can’t we tickle ourselves? This course tries to answer these questions and many others, providing a comprehensive overview of the scientific study of thought and behavior. It explores topics such as perception, communication, learning, memory, decision-making, religion, persuasion, love, lust, hunger, art, fiction, and dreams. The course will look at how these aspects of the mind develop in children, how they differ across people, how they are wired-up in the brain, and how they break down due to illness and injury.
You can access the Introduction to Psychology course via the main website (see link below). Here you will find videos and MP3 audio files of all the lectures, along with the lecture PowerPoint slides. As you work your way through the course you can even have a go at the Midterm and final exams.
So what are you waiting for? Check out the following link to find out if psychology is for you.
http://www.all-about-psychology.com/learn-psychology.html