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The systematic differences between the control and treatment groups can be controlled by taking two years data, _____.
Continuum Model
A conceptual framework suggesting that certain properties or behaviors exist on a continuous scale, rather than being categorically distinct.
Cross-Cultural Research
Studies that explore, compare, or contrast behaviors, practices, beliefs, and phenomena across different cultural or ethnic groups.
Theoretical Concepts
Ideas or principles formulated to explain phenomena, forming the foundation of theories within academic fields.
Internal Validity
The extent to which a study accurately demonstrates a cause-and-effect relationship.
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