Salary and years of education are typically positively correlated, and grade-point average and the number of hours of television watched per day are typically negatively correlated.
<h3>Psychological perspectives</h3>
- The strength of an association between two variables is referred to as a correlation in psychology.
- Two variables moving in the same direction indicate a positive correlation. In other words, a positive correlation occurs when a rise in one measure is followed by a rise in another.
- If there is a negative correlation, the variables are moving in the opposite direction. When two variables have a negative correlation, changes in one cause changes in the other and vice versa.
- The correlation between salary and years of schooling is normally positive, but the correlation between grade point average and daily television viewing is typically negative.
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In assessing the internal validity of an intervention, we try to determine if certain changes cause certain outcomes. It is relevant in studies that try to establish casual relationship. While in observational or descriptive studies, it is not that relevant. It is also possible to have internal validity in a study and not have construct validity. Example, imagine a study where you are looking at the effects of a new computerized tutoring program on math performance in first grade students.
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The first one is the answer
This information is an example of explanatory social research.
