Which approach is defined by manipulating a variable under carefully controlled conditions and observing the changes in a second variable

Question

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The experimental approach involves manipulating a variable (independent variable) while keeping other variables under controlled conditions and observing the changes in the second variable (dependent variable). This approach helps establish cause-and-effect relationships between variables. The survey approach involves administering questionnaires or interviews to gather data, the testing approach involves assessing the participants' abilities, and the correlational approach involves examining the strength and direction of the relationship between variables without manipulating them.

Which Approach Is Defined by Manipulating a Variable Under Carefully