Dr. Land conducted a research study in a preschool where he asked teachers to change their typical procedures so that he could test his hypothesis that the amount of unstructured time (free play) structure in a day affects the amount of unruliness that children display. Teachers systematically varied the amount of free play each day for a month, and Dr. Land's research assistants recorded the amount of unruliness children displayed each day. This study would best be described as a

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This study is a field experiment because it was conducted in a real-world setting (a preschool) and involved manipulating the independent variable (amount of free play) in a systematic way to observe its effects on the dependent variable (amount of unruliness displayed by children). This is different from a laboratory experiment where the setting is controlled and artificial.

Dr Land Conducted a Research Study in a Preschool Where