placebo

placebo
A treatment which has no effect, and is administered to a control group in experimental research, in place of a treatment whose effects are being studied. This usually happens only in medical research; in social research, control groups are rarely offered a placebo experience or treatment.
In the medical context, a substance lacking known pharmacologically active ingredients is given to the sick in order to please them; that is, for possible beneficial effects arising from faith in the powers of treatment (the placebo effect). Placebos are also widely used as controls in evaluating the therapeutic efficacy of the active components of new drugs. Conventionally, the experimental treatment is given to cases selected at random, with the ineffective placebo given to all other cases, even though they are suffering from the same illness. In the ‘double blind’ situation, even the person administering the treatments does not know which is which, as the medicines are made to look the same, to prevent him or her inadvertently communicating their knowledge to recipients.

Dictionary of sociology. 2013.

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  • PLACEBO — PLACEB Produit sans activité pharmacologique mais présenté de façon identique au produit actif, ce qui permet de tester la validité de ce dernier dans un essai thérapeutique. Il n’est pas rare qu’un malade se voie soulagé de ses douleurs ou… …   Encyclopédie Universelle

  • Placébo — Placebo (homonymie) Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom …   Wikipédia en Français

  • Placebo — Sn wirkstofflose Imitation eines Medikaments per. Wortschatz fach. (20. Jh.) Entlehnung. Entlehnt aus ne. placebo.    Ebenso nndl. placebo, ne. placebo, nfrz. placebo, nschw. placebo, nnorw. placebo. Das englische Wort geht auf den Anfang von… …   Etymologisches Wörterbuch der deutschen sprache

  • placebo — PLACÉBO s.n. (farm.) Medicament (sau preparat) inactiv prescris fie pentru a i face plăcere pacientului, fie în scopuri experimentale, pentru a studia efectele farmaceutice ale medicamentului şi reacţiile psihice ale pacientului. ♢ (Adjectival)… …   Dicționar Român

  • Placebo — Saltar a navegación, búsqueda Placebo puede significar: La sustancia placebo, ver también efecto placebo. Placebo, un grupo originario de Londres, Inglaterra. Obtenido de Placebo Categoría: Wikipedia:Desambiguación …   Wikipedia Español

  • placebo — m. farm. Sustancia que se prescribe como fármaco pero que no posee ninguna propiedad farmacológica específica. Se utiliza especialmente cuando se hace un estudio sobre un determinado fármaco y se desea que los pacientes no estén influenciados por …   Diccionario médico

  • placebo — (n.) early 13c., name given to the rite of Vespers of the Office of the Dead, so called from the opening of the first antiphon, I will please the Lord in the land of the living (Psalm cxiv:9), from L. placebo I shall please, future indicative of… …   Etymology dictionary

  • Placebo — Pla*ce bo, n. [L., I shall please, fut. of placere to please.] 1. (R. C. Ch.) The first antiphon of the vespers for the dead. [1913 Webster] 2. (Med.) A prescription with no pharmacological activity given to a patient to humor or satisfy the… …   The Collaborative International Dictionary of English

  • placebo — placȇbo m <G a> DEFINICIJA farm. inaktivna supstanca ili pripravak, daje se pacijentu kako bi se zadovoljila njegova želja za medikamentnom terapijom, ili se primjenjuje u kontroliranim studijama zbog procjene djelotvornosti nekog lijeka… …   Hrvatski jezični portal

  • placebo — (Del lat. placebo, 1.ª pers. de sing. del fut. imperf. de indic. de placēre). m. Med. Sustancia que, careciendo por sí misma de acción terapéutica, produce algún efecto curativo en el enfermo, si este la recibe convencido de que esa sustancia… …   Diccionario de la lengua española

  • placebo — [plə sē′bō] n. pl. placebos or placeboes [ME < L, I shall please] 1. R.C.Ch. the first antiphon of the vespers for the dead, beginning with the word placebo 2. a harmless, unmedicated preparation given as a medicine merely to humor a patient,… …   English World dictionary

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