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Hypothesis: Students will experience fatigue during final exam weeks due to the

ID: 3445759 • Letter: H

Question

Hypothesis: Students will experience fatigue during final exam weeks due to the crash caused by an increase in caffeine intake.

2. My design is causational because caffeine does not always cause fatigue. The proper tests have not been conducted to conclude that there is a relationship between the two variables.

3. The independent variable would be caffeine and the dependent variable would be the students energy level.

My question is what is the potential threats to validity (one internal and one external )?

Explanation / Answer

Hypothesis: Students will experience fatigue during final exam weeks due to the crash caused by an increase in caffeine intake.

Threats to internal validity: instrumentation. Here, there is no proper intrude t calibration and there is not true treatment effect that is supplied. There might be changes in observation which occurs as a threat in operation.

ThreATS to external validity: constructs, methods, and confounding. For broad concepts such as fatigue, there can be many perspectives through which it could be viewed. When viewing such a broad concept, the fact that our construct is valid, as an experiment cannot take the perceived ways and it would only be possible to make generalisations.