Discussion
Experimental researches are aimed to ............................ .
Answer: C
The key's answer is that experimental researches are aimed to study the application of theory.
An experiment starts from a theory, derives a prediction from it (a hypothesis about cause and effect), and then deliberately manipulates the independent variable under controlled conditions to see whether the predicted effect appears. In this sense an experiment puts a theory into practice and tests whether it holds.
Merely establishing an association between variables is the aim of correlational research, which observes variables without manipulating them. Describing variables is the aim of descriptive or survey research, and trend analysis belongs to historical and longitudinal studies.
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