The Idea of the true experiment is control where The experimenter is in control of many facets of the research design.
The experimenter controls the way in which a sample of participants is obtained from the population, participants are assigned to different treatment conditions, the environment is organized during testing, instructions are presented to participants, observations are made, and data are collected.
Experimental reserches which are truly assessed can be used but to a certain extent.Not all the questions can be answered through same experiments which have been done in controlled environment because of the nature of the research question or because of ethical issues.
That is, can the pattern of results in the experiment be extended to behavior in the real world.
. To what extent will this artificial environment and the particulars of the setting contribute to the patterns of behavior that are observed.
These are the keys to find the solution of a problem under observation.
For example, is learning a list of words in a laboratory the same as learning in the classroom?
Thus the true experiment cannot be used in every research situation, because of either
methodological or ethical issues.
Ref:Chapter 9. Using Experimental Control to Reduce Extraneous Variability
Sep 15th, 2014
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