Which features made it experimental or correlati​‌‍‍‍‌‍‍‍‌‍‍‍‌‌‌‌‌‌‍‍​onal?

 

-If the study was correlational, what were the main variables measured, and which did they think were predictor and criterion variables?

 

– If the study was experimental, what were the independent and dependent variables?

 

Were any measures taken to control extraneous variables?

 

If so, what were they? Does the study seem to have external validity? Internal validity? Why or why not?

 

How could this study be changed from a correlational to an experimental study or from an experimental to a correlational study? 2022 latest answers   

 

Why did the researchers use the approach they did (correlational or experimenta​‌‍‍‍‌‍‍‍‌‍‍‍‌‌‌‌‌‌‍‍​l)?