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A clinical control group can be a placebo arm or it can involve an old method used to address a clinical outcome when testing a new idea. For example in a study released by the British Medical Journal, in 1995 studying the effects of strict blood pressure control versus more relaxed blood pressure control in diabetic patients, the clinical control group was the diabetic patients that did not ...
In the design of experiments, a between-group design is an experiment that has two or more groups of subjects each being tested by a different testing factor simultaneously. This design is usually used in place of, or in some cases in conjunction with, the within-subject design , which applies the same variations of conditions to each subject ...
[2] [3] The history of treatment of mental disorders consists in a development through years mainly in both psychotherapy (Cognitive therapy, Behavior therapy, Group Therapy, and ECT) and psychopharmacology (drugs used in mental disorders). [4] Different perspectives on the causes of psychological disorders arose.
This non-exhaustive list contains many of the sub-fields within the field of psychology: Abnormal psychology; Analytical psychology; Animal psychology;
The Natural history group (NH): who receive no treatment of any kind (and whose condition, therefore, is allowed to run its natural course). The outcomes within each group are observed, and compared with each other, allowing us to measure: The efficacy of the active drug's treatment: the difference between A and NH (i.e., A-NH).
For example, in evaluating the effectiveness of a new therapy, the mean performance of the therapy in one treatment group might be compared to the mean effectiveness of a placebo (or a well-known therapy) in a second, control group. In this context, differences between individuals in their reaction to the experimental and control manipulations ...
The sample or group receiving the drug would be the experimental group (treatment group); and the one receiving the placebo or regular treatment would be the control one. In many laboratory experiments it is good practice to have several replicate samples for the test being performed and have both a positive control and a negative control .
For example, raised levels of dopamine may be a consequence rather than a cause of schizophrenia. Many psychologists criticise psychiatry for focusing its attention primarily on symptoms and for assuming that relieving symptoms with drugs cures the problem. Unfortunately, in many cases when the drug treatment is ceased the symptoms recur.