Chapter 2
2.8
manipulated. For example, if you want to under-
stand the impact of air pollution on health, you
can’t intentionally expose people to pollution, so
you study those who were already exposed.
Example:
Research on the academic perfor-
mance of students after a new teaching method is
implemented.
2.
Historical Research
•
Similar to Ex Post Facto:
Historical research is
similar to ex post facto research and is a dimen-
sion of descriptive research.
•
Focus on History:
It primarily focuses on the his-
torical aspects of a particular issue or problem.
Example:
Studying the growth of trade unions in
India or the ...
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