Effect may refer to:
  • A result
    A result is the final consequence of a sequence of actions or events expressed qualitatively or quantitatively. Possible results include advantage, disadvantage, gain, injury, loss, value and victory. There may be a range of possible outcomes associated with an event depending on the point of...

     or change of something
    • List of effects
    • Cause and effect, an idiom describing causality
      Causality is the relationship between an event and a second event , where the second event is understood as a consequence of the first....

In pharmacy and pharmacology:
  • Drug effect, a change resulting from the administration of a drug
    • Therapeutic effect
      Therapeutic effect
      A therapeutic effect is a consequence of a medical treatment of any kind, the results of which are judged to be desirable and beneficial. This is true whether the result was expected, unexpected, or even an unintended consequence of the treatment...

      , a beneficial change in medical condition, often caused by a drug
    • Adverse effect
      Adverse effect
      In medicine, an adverse effect is a harmful and undesired effect resulting from a medication or other intervention such as surgery.An adverse effect may be termed a "side effect", when judged to be secondary to a main or therapeutic effect. If it results from an unsuitable or incorrect dosage or...

       or side effect, an unwanted change in medical condition caused by a drug
  • Dose-response effect, the relationship between a drug dose and its effect, plotted on a dose-response curve

In media:
  • Special effect
    Special effect
    The illusions used in the film, television, theatre, or entertainment industries to simulate the imagined events in a story are traditionally called special effects ....

    , an artificial illusion
    • Sound effect
      Sound effect
      For the album by The Jam, see Sound Affects.Sound effects or audio effects are artificially created or enhanced sounds, or sound processes used to emphasize artistic or other content of films, television shows, live performance, animation, video games, music, or other media...

      , an artificially created or enhanced sound
      • Effects unit
        Effects unit
        Effects units are electronic devices that alter how a musical instrument or other audio source sounds. Some effects subtly "color" a sound, while others transform it dramatically. Effects are used during live performances or in the studio, typically with electric guitar, keyboard and bass...

        , a device used to manipulate electronic sound
        • Effects pedal, a small device attached to an instrument to modify its sound
    • Visual effects
      Visual effects
      Visual effects are the various processes by which imagery is created and/or manipulated outside the context of a live action shoot. Visual effects involve the integration of live-action footage and generated imagery to create environments which look realistic, but would be dangerous, costly, or...

      , artificially created or enhanced images

  • Effects, one's personal property
    Personal property
    Personal property, roughly speaking, is private property that is moveable, as opposed to real property or real estate. In the common law systems personal property may also be called chattels or personalty. In the civil law systems personal property is often called movable property or movables - any...

     or belongings
  • Effects (G.I. Joe), a fictional character in the G.I. Joe universe
  • Effect size
    Effect size
    In statistics, an effect size is a measure of the strength of the relationship between two variables in a statistical population, or a sample-based estimate of that quantity...

    , a measure of the strength of a relationship between two variables
  • Effect system
    Effect system
    An effect system is a formal system which describes the computational effects of computer programs, such as side effects. An effect system can be used to provide a compile-time checking of the possible effects of the program....

    , formal system which describes the computational effects of computer programs

See also

  • Affect (disambiguation)
  • Effectiveness (disambiguation)
  • Efficacy
    Efficacy is the capacity to produce an effect. It has different specific meanings in different fields. In medicine, it is the ability of an intervention or drug to reproduce a desired effect in expert hands and under ideal circumstances.- Healthcare :...

  • Pragmatism
    Pragmatism is a philosophical tradition centered on the linking of practice and theory. It describes a process where theory is extracted from practice, and applied back to practice to form what is called intelligent practice...

    , the philosophy of causes and effects
  • Sequence of events
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