- What is the purpose of the study?
The purpose of the study was to test the adjustment of children with hearing impairment. The authors of the study attempted to find out what factors prevent the adjustment of children with hearing impairment.
- What type of research design is used?
The researchers conducted the qualitative research, which involved the Rutter Children’s Behavior questionnaire and Bristol Social Adjustment Guide. The researchers involved two test groups, which were involved in the testing and control group. The level of the adjustment of each group in the school environment was tested. In such a way, the researchers attempted to find out whether children with hearing impairment are adjusted to the school environment. The research is designed to compare the level of adjustment of subjects in the school environment.
- How does the research design control for the following threats to internal validity:
The selection of subject was grounded on their hearing impairment. The subjects were of the four-eleven years old. In such a way, the researchers focused on the analysis of the defined age group with hearing impairment to meet the goal of the study. The selection of subjects was also limited territorially to Stockport, where the research was conducted. Nevertheless, the territorial limitation does not limit the scope of the research because the researchers focused on the integration of children with hearing impairments.
The maturation did not affect outcomes of the research substantially because the experiment was conducted in a short period of time and time did not affect outcomes of the study and findings of the researchers. In addition, the researchers involved subjects, whose age varied to find out possible differences in different age groups. Therefore, the researchers minimized the risk of the impact of factors that function as a passage of time. Instead, the researchers used the adequate analysis methods within the defined timeline.
The mortality did not affect the study because all the subjects passed successfully the Rutter Children’s Behavior questionnaire and Bristol Social Adjustment Guide and there were no subjects, who dropped out of the experiment. In such a way, the researchers involved all the subjects and obtained results from all the subjects participating in the study.
The regression of the research involved the past of subjects. All subjects involved in the study had different experience that could have affected their responses in the course of the study.
The results of the study were tested by the researchers to test their validity and reliability.
The researchers used Rutter Children’s Behavior questionnaire and Bristol Social Adjustment Guide to conduct their study. These instruments have already proved their efficiency in other studies and are widely applied today.
This study continued studies conducted in relation of children with impairment and their integration in the social life.
- What are findings of the study?
The researchers revealed the fact that a large part of children involved in the Bristol Social Adjustment Guide revealed the fact that they are maladjusted in the school environment, while the Rutter Children’s Behavior questionnaire revealed the lack of their integration in the school environment. The researchers explain such a difference by the fact that problems of children with hearing impairment are social but not emotional.
- Is the study internally valid? Why or why not?
The study is internally valid because the results of the study were tested and their validity proved as the researchers tested responses of subjects and their sincerity.
- Is the study externally valid? Why or why not?
The study external validity is questionable, because the study was limited to the involvement of participants from Stockport, while responses of subjects from other locations and results of the study conducted nationwide, for instance, could vary from the study conducted in Stockport.