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Based on the concept of non-causal statistical relationships, explain why the researchers' methodology in this scenario represents a non-experimental approach and identify the specific type of conclusion they must avoid making.
Case context: A research team is interested in the statistical relationship between verbal intelligence and mathematical intelligence. They design a study where they administer standardized tests for both verbal and mathematical skills to a large group of high school students. They collect the scores and analyze them to see how the two types of intelligence vary together without attempting to influence the students' abilities.
Question: Based on the concept of non-causal statistical relationships, explain why the researchers' methodology in this scenario represents a non-experimental approach and identify the specific type of conclusion they must avoid making.
Sample answer: The researchers' methodology represents a non-experimental approach because they are merely observing and measuring the two variables (verbal intelligence and mathematical intelligence) exactly as they naturally exist in the students, without manipulating them. Because they are investigating an inherently non-causal statistical relationship, they must avoid concluding that higher verbal intelligence directly causes higher mathematical intelligence, or vice versa, regardless of how strong the correlation might be.
Key points:
- The researchers are utilizing a non-experimental approach by observing and measuring variables in their natural state.
- The researchers are not manipulating either variable.
- The researchers are determining if the variables are correlated.
- The researchers must not assert that a change in verbal intelligence causes a change in mathematical intelligence.
Rubric: Full credit is awarded if the response accurately links the administration of tests to observing and measuring variables naturally (the non-experimental approach) and correctly identifies that the researchers must avoid making any direct causal assertions about the relationship between the two types of intelligence.
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Research Methods in Psychology - 4th American Edition @ KPU
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