Answer:
Dependent variable
Explanation:
When we conduct an experiment, the two variables we have are the dependent and the independent variables. The independent variable is the one that is changed or controlled in the experiment. The experiment attempts to find the effect of the independent variable on the dependent variable. Therefore, the dependent variable is the one that measures the effect of the manipulation.
Question options:
reactivity
selection bias
external validity
the reliability of the measurement
Answer:
the reliability of the measurement
Explanation:
Good Observations are more reliable and valid. Professor Ibrahim's refinement to define rating scales and be sure observers(seeing how they disagree on their observations and how this could affect research) are following this ensures judgement based on data collected from these individuals(observers) are more reliable, which will ensure construct validity.
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