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International Research Methods
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International Research Methods
...... There are two types of validity with which scholars need to be concerned. These are: internal validity and external validity. Internal validity refers to the level to which true causality is achieved. In other words, it measures how accurate a causation statement between the dependent and independent variables is likely to be. The internal validity of a study is strongest when both the measure of the dependent and independent variables is reliable, and when a strong justification exists for the causal link between the dependent and the independent variable. One of the biggest threats to internal validity is rival hypotheses
External validity is measured by the studys ability to be generalized to other populations other than the actual experimental and control groups. It is primarily concerned with inferences about how well the findings of the study can be applied to other populations in different settings. One of the biggest threats to external validity is changing the variables......
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