Control (research)


Control (research)
In research, control subjects or control procedures permit comparison with experimental results. The first controlled clinical research was probably done in 1875 by the British naval surgeon James Lind who, on board the HMS Salisbury, gave sailors with scurvy either oranges or lemons or cider or vinegar or nutmeg (or another treatment) and after just six days discovered that the citrus-consuming sailors had recovered from scurvy, until then the scourge of extended sea voyages, while the sailors who had been given the other treatments remained uncured.

Medical dictionary. 2011.

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  • Control — Con*trol , n. [F. contr[^o]le a counter register, contr. fr. contr r[^o]le; contre (L. contra) + r[^o]le roll, catalogue. See {Counter} and {Roll}, and cf. {Counterroll}.] 1. A duplicate book, register, or account, kept to correct or check… …   The Collaborative International Dictionary of English

  • control group — Control Con*trol , n. [F. contr[^o]le a counter register, contr. fr. contr r[^o]le; contre (L. contra) + r[^o]le roll, catalogue. See {Counter} and {Roll}, and cf. {Counterroll}.] 1. A duplicate book, register, or account, kept to correct or… …   The Collaborative International Dictionary of English

  • Research — Re*search (r? s?rch ), n. [Pref. re + search: cf OF. recerche, F. recherche.] 1. Diligent inquiry or examination in seeking facts or principles; laborious or continued search after truth; as, researches of human wisdom; to research a topic in the …   The Collaborative International Dictionary of English

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  • Control Data Corporation — (CDC) was a supercomputer firm. For most of the 1960s, it built the fastest computers in the world by far, only losing that crown in the 1970s after Seymour Cray left the company to found Cray Research, Inc. (CRI). CDC was one of the nine major… …   Wikipedia

  • Research and Analysis Wing — Infobox Government agency agency name = Research and Analysis Wing nativename = nativename a = nativename r = logo = logo width = logo caption = seal width = 125 px seal caption = धर्मो रक्षति रक्षित: formed = 21 Sept 1968 preceding1 = preceding2 …   Wikipedia

  • Research Institute for Advanced Computer Science — Overview The [http://www.riacs.edu Research Institute for Advanced Computer Science (RIACS)] was founded June 1, 1983 as a joint collaboration between the Universities Space Research Association (USRA) and the NASA Ames Research Center. The… …   Wikipedia


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