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Random assignment is used to control order effects in a within-subjects experiment.

In an experiment examining the effects of background noise on people’s ability to understand a verbal message, one group of participants is given a comprehension quiz after listening to a passage being read to them with no background noise. A week later, the same group of participants is given a comprehension quiz after listening to a passage being read to them with 60 decibels of conversation as background noise. This is an example of a ____ design.

What should be on the medication label for medications in the monel cup on sterile field? 

What could potentially cause a fire on the surgical drapes? 

Who determines the type of local anesthetic agent and strength the patient receives in a procedure? 

What type of communication is done when the patient is not under general anesthesia?

In the observational study of adolescents at the mall, you count the number of social interaction behaviors that occur within a one-hour observation period. This is an example of the ____ method of quantifying behavior.

Observing a person’s behavior while having him or her complete a problem-solving task in the laboratory is an example of participant observation.

Last fall, a state college introduced a one-week study skills course for new freshmen students. At the end of the academic year, the college compared the grades and dropout rate for their freshmen with the corresponding measurements for freshmen at a neighboring state college. This study is an example of a ____.

A political scientist uses a survey to determine whether college students’ sleeping habits are related to their grade point averages. This researcher is using the descriptive survey research design.