A professional who plans, designs, conducts, and analyzes results of experiments to study problems in psychology. Responsibilities include:

• Formulates hypotheses and experimental designs to investigate problems of perception, memory, learning, personality, and cognitive processes.
• Designs and constructs equipment and apparatus for laboratory study.
• Selects, controls, and modifies variables in laboratory experiments with humans or animals, and observes and records behavior in relation to variables.
• Analyzes test results, using statistical techniques, and evaluates significance of data in relation to original hypothesis.
• Collaborates with other scientists in such fields as physiology, biology, and sociology in conducting interdisciplinary studies of behavior and formulating theories of behavior.
• Writes papers describing experiments and interpreting test results for publication or for presentation at scientific meetings.
• May specialize in aesthetics, memory, learning, autonomic functions, electroencephalography, feeling and emotion, motivation, motor skills, perception, or higher order cognitive processes.
• May conduct experiments to study relationship of behavior to various bodily mechanisms and be designated Psychologist, Physiological.
• May specialize in study of animal behavior to develop theories of animal and human behavior and be designated Psychologist, Comparative.