What is a nonequivalent control group design?
a quasi-experimental design in which the responses of a treatment group and a control group are compared on measures collected at the beginning and end of the research.
What is a nonequivalent control group design example?
Imagine, for example, a researcher who wants to evaluate a new method of teaching fractions to third graders. This design would be a nonequivalent groups design because the students are not randomly assigned to classes by the researcher, which means there could be important differences between them.
What does the concept of nonequivalent groups mean?
the concept of nonequivalent groups means that the number of participants is different from one group to another.
What is pre/post design with control group?
A type of true experimental design where test units are randomly allocated to an experimental group and a control group. Both groups are measured before and after the experimental group is exposed to a treatment.
What is ex post facto design and its example?
The assignment of subjects to different groups is based on whichever variable is of interest to the researchers. For example, a researcher is interested in how weight influences self-esteem levels in adults. This is an ex post facto design because a pre-existing characteristic (weight) was used to form the groups.
What is the advantage of a pretest in the nonequivalent control group pretest-posttest design?
What are the advantages and disadvantages of the nonequivalent control group pretest-posttest design? Advantages: Can compare scores before and after a treatment in a group that receives the treatment and in a group that does not. Disadvantages: susceptible to the threat of selection differences.
What is the advantage of the pretest in the nonequivalent control group?
What is counterbalanced design?
Counterbalanced designs allow the researcher to isolate the main effects due to condition and control for order and sequence effects only if there is no interaction between the procedural variables (time, position) and the independent variables.
How does a cohort design differ from other quasi-experimental designs?
What type of design is illustrated in the following diagram? How does a cohort design differ from other quasi-experimental designs? There is some date or event in common to all members of the control and the experimental groups. An interrupted time-series design can be very useful in what type of research?
What is a control group design?
control group, the standard to which comparisons are made in an experiment. Many experiments are designed to include a control group and one or more experimental groups; in fact, some scholars reserve the term experiment for study designs that include a control group.
What is the goal of ex post facto design?
Ex post facto design is a quasi-experimental study examining how an independent variable, present prior to the study in the participants, affects a dependent variable.
Which is the best definition of a nonequivalent control group?
nonequivalent control group design a study design in which the control group is not selected by random means.
Can a nonequivalent control group design be improved?
Some of these nonequivalent control group designs can be further improved by adding a switching replication. Using a
What is the design of the pretest-posttest nonequivalent group?
In the pretest-posttest nonequivalent groups design t here is a treatment group that is given a pretest, receives a treatment, and then is given a posttest. But at the same time there is a nonequivalent control group that is given a pretest, does not receive the treatment, and then is given a posttest.
Can a replication be added to a nonequivalent control group?
Some of these nonequivalent control group designs can be further improved by adding a switching replication.