Exam 10: The Nonexperimental and Quasi-Experimental Strategies: Nonequivalent Group, Pre-Post, and Developmental Designs

In the ______________ design,a researcher makes multiple observations before and after some event not manipulated by the researcher.

What name is given to the variable that is used to define the groups or conditions in a quasi-experimental study?

A researcher records participants' weights every Friday for three weeks prior to administering a diet education program and for three weeks following the program.This study is an example of

One of the primary advantages of a pretest-posttest nonequivalent control group design,in comparison to other nonequivalent group designs,is

A one-group pretest-posttest study is an example of a nonequivalent groups design.

A researcher studies language development by selecting a sample of 2-year-old children,a sample of 3-year-old children,and a sample of 4-year-old children.Each child's language skill is measured and the researcher plans to compare the scores for the three groups.This study is an example of

If a research design makes no attempt to minimize threats to internal validity,it is classified as an experiment.

A researcher in Mississippi measured visits to the school counselor for a group of students for three weeks in the spring.In the fall,immediately after a major hurricane,the researcher again measured the students' counselor visits to see if there had been any change.This researcher is using an interrupted time-series design.

The changes that occur as a person ages from child to adult to elderly,are called cohort effects.

A research study that compared married men,divorced men,and single adult men is an example of the differential research design.

A longitudinal developmental design can be viewed as an example of a one-group pretest-posttest design.

Which of the following comes closest to being a true experiment?

Distinguish nonexperimental designs from quasi-experimental designs.

Quasi-experimental studies attempt to minimize threats to validity but nonexperimental studies make little or no attempt.

Last year the state increased the speed limit on one section of a highway from 55 to 65 mph.To evaluate the effect of the change,a researcher gathered accident reports for six months before the change and for six months after the change.This is an example of

A researcher studies language development by selecting a sample of 2-year-old children and giving them a language skill test.Each year for the next two years,the children are brought back and tested again.The researcher plans to compare the children's scores at age two,age three,and age four.This study is an example of

In nonexperiments and quasi-experiments different groups or conditions are defined in terms of

Nonexperimental and quasi-experimental designs involve comparing groups or conditions.

Which of the following is the correct classification for a time-series design?

A prison psychologist measures depression for a group of prisoners each day for one week before and for one week after the psychologist begins a series of group therapy sessions.This is an example of a(n)_______ design.