3. Distinguishing correlational and experimental research studies Aa Aa In each

Question

3. Distinguishing correlational and experimental research studies Aa Aa In each of the following situations, data are obtained by conducting a research study. Classify each research study as experimental or correlational. Type Research Study A cognitive psychologist is interested in the demand behavior of rats. Rats in a rat lab have two Experimental levers in their cages. Pressing one lever dispenses Tom Collins mix (without alcohol); pressing the other lever dispenses the same amount of a sodium saccharin solution. The psychologist obtains data on the demand behavior by altering the total number of presses the rats are allotted and the number of presses required to dispense each of the fluids. A sports psychologist is interested in the relationship between concussions and depression. He l correlational- collects data from a sample of retired NFL football players, recording the number of concussions and the number of episodes of depression each experienced during his career A professor is interested in the promptness of students and their success in class. She collects Experimental data on the time each student arrives at her Introductory Statistics class during randomly selected weeks of the semester ainsdta es the same amount oOwithout alcohol: ctfrom a aple of retredis careeots Esperimental

Explanation / Answer

The first study is experimental study because reseacher gave same some treatment to rats.

Answer: experimental study

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Here we need to find the relationship between two quantitative variables so we need to find the correlation coefficient between the variables.

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Here we need to find the relationship between two quantitative variables so we need to find the correlation coefficient between the variables.

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4:

For first study options are correct.

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For second study ;

Experimental study

Rest answers are correct .

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