The observer effect in psychology, also known as the Hawthorne effect, refers to subjects altering their behavior when they are aware that an observer is present. This applies when a psychologist observes his patients or... More »

The "Rosenthal effect" is another name for the observer-expectancy effect, or the idea that the expectations or biases of a researcher can have an effect on the results of an experiment. The effect is named for the resea... More »

The Doppler effect is an observed shift in the frequency of a wave as the source of the emission moves relative to the observer. As a sound- or light-emitting object moves closer to an observer, the pitch of the emission... More »

In the realm of psychology, there are four primary reasons why a social creature such as a human exhibits unsociable, or mean, behavior: positive distinction, downward comparisons, classical projection and ego threat. Wh... More »

Some types of behavior outlined in psychology include appropriate behavior, inappropriate behavior, and maladaptive or emotional behavior. Other types of behavior may exist in excess or in deficit. Behavior can also be c... More »

Negative reinforcement is a concept in psychology's theory of operant conditioning that suggests a behavior is strengthened when a negative outcome is stopped, removed, avoided or prevented. Negative reinforcement is an ... More »

The study of human social behavior is called sociology, while the study of the individual human mind and behavior is called psychology. Sociology basically deals with human relationships and institutions while psychology... More »