What is a disadvantage of Solomon four-group design?
Despite the statistical power and results that are easy to generalize, this design does suffer from one major drawback that prevents it from becoming a common method of research: the complexity.
What is the major threat to validity of Solomon four-group design?
When conducting a study with a pre-test/post-test design (i.e., a repeated-measures study), one of the major threats to validity that you will face is the threat of testing effects.
What Solomon four-group design?
The Solomon four-group design is a research design that attempts to take into account the influence of pretesting on subsequent posttest results. Some research designs include a pretest, which is taken before exposure to a treatment, and a posttest, which is administered after exposure to a treatment.
What is the purpose of the Solomon four-group design quizlet?
Why does the Solomon four-group design consist of an identical pretest-posttest control group design ? to protect against the threats of to internal validity. pretest post test control-group design. consists of two randomly assigned groups of participants both of which are pretested, with one group receiving the IV.
What are some threats to the validity of experiments?
The validity of your experiment depends on your experimental design. 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 3 main threats to study validity?
Factors which jeopardize external validityReactive or interaction effect of testing--a pretest might increase or decrease a subject's sensitivity or responsiveness to the experimental variable. ... Interaction effects of selection biases and the experimental variable.More items...
What does Solomon four-group design assess quizlet?
The classical experiment runs the risk that pretesting will have an effect on subjects, so the Solomon four-group design adds experimental and control groups that skip the pretest. Thus, the Solomon four-group design combines the classical experiment and the after only design or "static-group comparison."
Which of the following are is pre experimental design?
Yet, three types of designs are normally considered standard pre-experiments and are used routinely by researchers: the one-shot case study, the single-group before and after, and the static group comparison.
Which of the following is a research finding about the effects of physical attractiveness?
Which of the following is a research finding about the effects of physical attractiveness? Attractive people are found guilty less often in court. Which of the following is an example of the proximity effect? People are more apt to become romantically involved with others who _______.
Advantages of the Solomon four-group design
Why would we need 4 groups? More specifically, what additional information can we get with a Solomon four-group design compared to a standard experimental design with 2 groups (1 treatment group and 1 control group)?
Limitations of the Solomon four-group design
The Solomon four-group design is not used a lot in practice because of its high cost, since compared to a standard design with 2 groups it requires twice the sample size, time, materials, resources, and personnel/work.
Example of a study that used the Solomon four-group design
Dehghan et al. investigated VR (Virtual Reality) technology as a method to reduce anxiety in children undergoing surgery.
How many groups of participants are needed for a researcher to be successful?
A researcher must begin with a reasonably large pool of participants so that when they are divided into four groups, each of the groups will have a sufficient number to yield reliable results.
Can you randomly assign a condition?
No, assigning participants at random to the two conditions (using a true experimental design ) would be vastly superior.
Advantages of The Solomon Four-Group Design
Limitations of The Solomon Four-Group Design
- The Solomon four-group design is not used a lot in practice because of its high cost, since compared to a standard design with 2 groups it requires twice the sample size, time, materials, resources, and personnel/work.
Example of A Study That Used The Solomon Four-Group Design
- Dehghan et al.investigated VR (Virtual Reality) technology as a method to reduce anxiety in children undergoing surgery.
References
- Campbell DT, Stanley JC. Experimental and Quasi-Experimental Designs for Research. Wadsworth; 1963.
- Solomon Four-Group Design. In: The SAGE Encyclopedia of Educational Research, Measurement, and Evaluation. SAGE Publications, Inc.; 2018.
Further Reading