PSYC 255: Chapter 10
A one-group pretest-posttest study is an example of a nonequivalent groups design.
False
Differential research is an example of the quasi-experimental research strategy.
False
If a research design makes no attempt to minimize threats to internal validity, it is classified as an experiment.
False
In a cross-sectional developmental study, age would be the quasi-independent variable.
False
In a one-group pretest-posttest design a researcher makes multiple observations before and after the introduction of a treatment.
False
Longitudinal developmental studies provide a relatively quick and easy way to evaluate development over time.
False
The changes that occur as a person ages from child to adult to elderly, are called cohort effects.
False
The posttest-only nonequivalent control group design comes close to being a true experiment and therefore is a quasi-experimental design.
False
A cross-sectional design comparing three different ages would require three separate groups of participants.
True
A longitudinal developmental design can be viewed as an example of a one-group pretest-posttest design.
True
A research study that compared married men, divorced men, and single adult men is an example of the differential research design.
True
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.
True
Cohort effects are not a concern for longitudinal developmental designs.
True
In a time-series design a researcher makes multiple observations before and after the introduction of a treatment.
True
Nonexperimental and quasi-experimental designs involve comparing groups or conditions.
True
Nonexperimental research typically involves looking at differences between preexisting groups or at changes that occur over time.
True
Nonexperimental studies always contain a threat to internal validity, which means that these studies cannot establish unambiguous cause-and-effect relationships.
True
Quasi-experimental studies attempt to minimize threats to validity but nonexperimental studies make little or no attempt.
True
The pretest-posttest nonequivalent control group design reduces the threat of assignment bias and limits time-related threats and therefore is a quasi-experimental design.
True
The time-series design is an example of the quasi-experimental research strategy.
True
