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Double-Blind, Randomized Controlled Trial. Essay

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  • on April 1, 2014
  • Category: Psychology
  • Length: 3,183 words

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Below is an essay on "Double-Blind, Randomized Controlled Trial." from Anti Essays, your source for research papers, essays, and term paper examples.

Double-Blind, Randomized Controlled Trial.
Why these Trials are used in Psychological Research.
SID 1241148
Anglia Ruskin University













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                                          Double Blind Randomized Controlled Trial.
                                Why these Trials are used in Psychological Research.
Randomized Controlled Trials are considered to be one of the most valid and reliable of experimental designs used in the world of research (Chan, Jönsson & Bhandari, 2007). It is a study or experiment whereby participants are assigned randomly to one of two or more treatment groups in order to investigate the efficiency of various interventions and therapies. These groups are usually the experimental group and the control group. When conducting these trials as double-blind experiments, neither the participants nor the experimenter/ outcome assessor are aware of which participants belong to a particular group. When randomization is carried out properly in a double blind randomized controlled trial, the possibility of the experimenter or the participants influencing the choice of intervention either consciously or otherwise is reduced. For a successful randomization to be achieved in double blind, randomized controlled trials, both allocation concealment and double blind procedures are employed (Schulz, Chalmers, Hayes & Altman, 2002). Allocation concealment hinders the designated individuals who enter participants into a trial from learning about any impending allocation. Allocation is put to use prior to the start of a trial while the double blind procedure is executed while the trial is taking place. These two strategies are used to conceal the sequence of assignment from both participants and investigators.
Randomized controlled trials are comparative measures used to...

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