In an experimental study, manipulation of the blank variable is studied to see if it leads to changes in the blank variable., independent; dependent, outcome; explanatory, controlled; random, input; output, When running an experimental study, the group that is manipulated can be called the treatment group, True, False, In an BLANK study, the researcher manipulates one of the variables of interest and tries to determine how that manipulation influences the other variables of interest., Experimental, Observational, Qualitative, Quantitative , Control Groups are, independent variable, the group being treated, The group being manipulated, The group that is not being manipulated, An Advantage to Experimental Studies, The independent variable can be manipulated., They often occur in laboratories or special classrooms rather than natural settings., Disadvantage of Experimental Studies, Participants can be assigned randomly to the treatment and control groups., A variable, known as a confounding (or lurking) variable, that is not being studied, recorded, or manipulated, Advantages of Observational Studies, Variables that cannot be manipulated, such as ethnicity or left- or right- handedness, can be studied., Results are subject to inaccuracies due to dependence on those who collect the data., Disadvantages of Observational Studies, Studies may be expensive or time consuming., The study occurs in a natural setting.

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