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TeachMeFinance.com - explain controlled trials controlled trials The term 'controlled trials' as it applies to the area of drug testing can be defined as ' Control is a standard against which experimental observations may be evaluated. In clinical trials, one group of participants is given an experimental drug, while another group (i.e., the control group) is given either a standard treatment for the disease or a placebo'. Previous 5 Terms: control, photogrammetric control, vertical Controlled area controlled investigation Controlled low strength material (CLSM) Next 5 Terms: controlling depth CONTS conure CONUS convection About the author Mark McCracken Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English". Copyright © 2005-2011 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.