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2000 BCE
Twenty-First Century
Genetic researchers finish mapping human genes. Scientists hope to one day isolate the individual genes responsible for different diseases. -
1998 BCE
Positive Psychology
Martin Seligman publishes Learned Optimism which foreshadows th "positive psychology" movement. -
1952 BCE
Diagnostic and Statitical Manual of Mental Disorders
The American Psychiatric Association publishes Diagnostic and Statitical Manual of Mental Disorders, an influential book. -
1939 BCE
World War II
World War II provides many opportunities for psychologists to enhance the popularity and influence of psychology, especially in applied areas. -
1938 BCE
The Behavior of Organisms
B. F. Skinner publishes The Behavior of Organisms, wich describes operant conditioning of animals. -
1929 BCE
Gestalt Psychology
Kohler publishes Gestalt Psychology, which criticizes behaviorism and outlines essential elements of the Gestalt position -
1914 BCE
World War I
During World War I, Yerkes and his staff develop a group intelligence test for evaluating U.S. military personnel, which increases the U.S. public´s acceptance of psychological testing. -
1913 BCE
Behavioral Psychology
John B. Watson outlines the tenets of behaviorism in a Psychological Review article. -
1911 BCE
Intelligence Test
Alfred Binet and Theodore Simon produce the first intelligence test. -
1905 BCE
Pavlov
Ivan Pavlov begins publishing studies of conditioning in animals. -
1900 BCE
Sigmund Freud: Psychoanalysis
Sgmund Freud publishes The Interpretation of Dreams, his major theoretical work on psychoanalysis. -
1890 BCE
The Principles of Psychology,
William James, Harvard University philosopher and psychologist, publishes The Principles of Psychology, describing psychology as "the science of mental life". -
1879 BCE
Psychology as a Science
Wilhelm Wundt establishes at the University of Leipzig, Germany, the fisrt psychology laboratory, which becomes very important for psychology students from all over the world. -
1861 BCE
Paul Broca
Paul Broca, a French physician, discovers an area in the left frontal lobe of the brain that is critical for the production of spoken language. Now called Broca´s Area -
1848 BCE
Phineas Gage
Phineas Gage suffers massive brain damage when a large iron rod accidentally pierces his brain, leaving his intellect and memory intact but altering his personality. -
1808 BCE
Phrenology
Franz Joseph Gall, a german physician, describes phrenology, the belief that the shape of a person´s skull reveals mental faculties and character traits. -
Wernicke
Carl Wernicke, a German neurologist and psychiatrist, shows that damage to a specific area in the left temporal lobe disrupts ability to comprehend or produce spoken or written language. -
Humanistic theories of self-actualization
Abraham Maslow -
Cognitive Development
Jean Piaget, clinical psychologist known for his pioneering work in child development