Somatoform disorders involve symptoms of the body that have no obvious or apparent physical cause.
There are three major elements that must be present in order for an abnormal behavior to be termed a psychological disorder: The most common of psychological disorders are the anxiety disorders.
Those who suffer from an anxiety disorder may feel uncontrollably tense, may have a persistent irrational fear (phobic disorder) or may be troubled by repetitive thoughts or actions (obsessive-compulsive disorder).
At that time, Wundt believed that the goals of psychology were (a) to study “immediate” conscious experience using experimental methodology and (b) to investigate higher mental processes using nonexperimental techniques.
The change that psychology has undergone in the nearly 130 years since its founding has been nothing short of phenomenal.