Which of the following accurately describes a disadvantage of using a pretest-posttest design? It is time-consuming .
What is a disadvantage of pretest posttest design?
The only disadvantage of the pretest-posttest control group design compared to the posttest only design, is that there can be a threat to internal validity called the testing threat . As was discussed in an earlier chapter, this threat can occur when there is an interaction between the pretest and the treatment.
What would the advantages and disadvantages be of using a pretest posttest design?
When might you use the posttest-only design? The advantage would be that without a pretest you wouldn’t be taking as much time. The disadvantage would be the useful-side of the pretest where you can see changes as well as attrition effects .
Which of the following is a weakness of the pretest posttest control group design?
The weakness of the Pretest-Posttest Control Group Design is that there might be a testing effect , that is, the pretest measurement might affect the posttest scores.
Which of the following is an advantage of using a pretest posttest design over using a posttest only design?
Which of the following is an advantage of using a pretest-posttest design over using a posttest-only design? It confirms whether the groups are equivalent.
What is the difference between a posttest only design and a pretest posttest design?
Pretest–posttest designs are employed in both experimental and quasi-experimental research and can be used with or without control groups. For example, quasi-experimental pretest–posttest designs may or may not include control groups, whereas experimental pretest–posttest designs must include control groups.
What are the disadvantages of a control group?
Failure to use a control group, or use of an inappropriate control group, can make it impossible to draw meaningful conclusions from a study. Failure to Demonstrate the Comparability of Patients in Treatment and Control Groups .
What is a one group posttest only design?
The one-group posttest-only design (a.k.a. one-shot case study) is a type of quasi-experiment in which the outcome of interest is measured only once after exposing a non-random group of participants to a certain intervention . The objective is to evaluate the effect of that intervention which can be: A training program.
What is the main advantage of the randomized matched subjects posttest only control group design?
Because no data are collected before the administration of the treatment or intervention (i.e., no pretest), the posttest-only control group design requires fewer resources (e.g., time, money, energy) for data collection . In fact, collecting data prior to a treatment or intervention may not be possible or feasible.
What is a pretest posttest control group design?
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 are the advantages of posttest-only design?
When might you use the posttest-only design? The advantage would be that without a pretest you wouldn’t be taking as much time . The disadvantage would be the useful-side of the pretest where you can see changes as well as attrition effects.
What is a unique feature of a Solomon four group design?
The Solomon four-group design employs a combination of pretest–posttest design and posttest-only design to combat threats to internal and external validity that are present in less complex designs.
What are examples of threats to internal validity?
What are threats to internal validity? There are eight threats to internal validity: history, maturation, instrumentation, testing, selection bias, regression to the mean, social interaction and attrition .
What are the limitations of experimental designs?
Limitation: They may be more expensive and time consuming than lab experiments . Limitation: There is no control over extraneous variables that might bias the results. This makes it difficult for another researcher to replicate the study in exactly the same way.
Which one of the following accurately describes the advantage of using a pretest group of answer choices?
Which one of the following accurately describes the advantage of using a pretest? All of these ( It enables the researcher to assess the effects of attrition ; It allows assessment of group equivalency; It allows selection of specific types of participants.)
What is a two group pretest posttest design?
A two-group pretest–posttest design is an experimental design , which compares the change that occurs within two different groups on some dependent variable (the outcome) by measuring that variable at two time periods, before and after introducing/changing an independent variable (the experimental manipulation or ...
