Effect
Effect
Effect (/ɪˈfɛkt/, from Latin effectus meaning "accomplishment, performance") is a term used in various fields of study, including psychology, medicine, physics, and economics. It refers to the result or outcome of a cause, or the change that is caused by an event or action.
Etymology
The term "effect" originates from the Latin word effectus, which means "accomplishment" or "performance". It was first used in English in the late 14th century.
In Medicine
In medicine, an effect refers to the result of a treatment or therapy. This can be a positive effect, where the treatment improves the patient's condition, or a negative effect, also known as a side effect, where the treatment causes an unwanted or harmful outcome.
In Psychology
In psychology, an effect refers to a change in behavior or mental state that is caused by an event or action. This can include the placebo effect, where a person's symptoms improve due to their belief in the treatment, or the Hawthorne effect, where people change their behavior because they know they are being observed.
In Physics
In physics, an effect refers to a phenomenon or result that is observed in an experiment or study. This can include the Doppler effect, where the frequency of a wave changes for an observer moving relative to the source of the wave, or the photoelectric effect, where light can be used to eject electrons from a material.
In Economics
In economics, an effect refers to the result of a change in policy or market conditions. This can include the income effect, where a change in income affects the demand for goods and services, or the substitution effect, where a change in the price of a good affects the demand for other goods.
Related Terms
- Cause and effect
- Side effect
- Placebo effect
- Hawthorne effect
- Doppler effect
- Photoelectric effect
- Income effect
- Substitution effect
External links
- Medical encyclopedia article on Effect
- Wikipedia's article - Effect
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