Why are children stubborn? Why do some people become addicted to alcohol or gambling? How do you help an abused child? All of these are difficult and challenging questions that the field of psychology is trying to answer.

So, then what exactly is psychology? There are many misperceptions created by television and movies today, but the basic answer is that psychology is both an applied and academic science that studies the human mind and behavior. Research in psychology seeks to understand and explain thought, emotion, and behavior. Psychology is applied to individuals via mental health treatment, performance enhancement, self-help, ergonomics, and many other areas affecting health and daily life.

Psychology History and Schools of Thought

While people have always been fascinated by human behavior, it wasn’t until the late 19th century that psychology began to be considered an actual science. Wilhelm Wundt established the first psychology lab in Germany. He believed in a school of thought called structuralism—believing that certain structures in the mind caused behavior. Over the course of psychology’s history, different schools of thought have competed for prominence. Here are the major schools of thought in psychology:

•Structuralism. The belief that there is a connection between sensation and emotion and behavior.

•Functionalism. The idea that the human brain is much like a computer, designed to carry out specific functions.

•Psychoanalysis. Created by Sigmund Freud, this school of thought believes in the rigorous probing of an individual's personal problems, motives, goals and attitudes as a way to heal the mind.

•Behaviorism. Proponents of this theory essentially hold that all human behavior is learned from one's surrounding context and environment.

•Humanism. This much more recent school of thought came as a reaction to behaviorism and Psychoanalysis, and emphasizes the importance of values, intentions, and meaning in the individual. The concept of the "self" is a central focus for most humanistic psychologists.

•Cognitivism. This branch of psychology believes that psychology should be concerned with a person's internal representations of the world and with the internal or functional organization of the mind.

As psychology moved away from its philosophical roots, psychologists began to employ more and more scientific methods to study human behavior. Today, researchers employ a variety of scientific methods, including experiments, correlational studies, longitudinal studies, and others to test, explain, and predict behavior.

Areas of Psychology

Students of psychology soon realize that the subject covers a huge range of material. The diverse topics students might study include social behavior, personality, research methods, therapeutic techniques, and much more. Because it’s such a broad and diverse field, a number of different subfields and specialty areas have emerged. The following are some of the major areas of research and application within psychology:

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