Verified Document

Variables Impacting Internal Validity In Program Evaluation Case Study

Internal Validity Is maturation a possible threat to the internal validity of the study? Why or why not?

For measures of academic achievement, six months (which is the intended length of the study) is not a long enough period of time to be very concerned about maturation as a threat to internal validity. Most academic achievement tests have longer durations. Maturation is something to be considered because of the varying ages of the study participants, and the fact that we know children's brains mature at different rates and some mathematical concepts are not understood until the human brain does mature to certain levels. Moreover, since the boys will move in and out of residency, their exposure to other reading instructions methods and tutoring cannot be controlled.

Is history a possible threat to the internal validity of the study? Why or why not?

Yes. History is the occurrence of some unanticipated event, such as the revelation about the director lying on his resume about attending school and being found out. History is generally not a threat to internal validity in a two-group experimental design since it is unlikely to be of sufficient magnitude to impact the outcome for the entire single group. However, the nature of the historical event...

Is testing a possible threat to the internal validity of the study? Why or why not? No. Both groups will experience the same testing schedule and type of tests, so the pre-test variable is not a threat to the internal validity.
4. Is instrumentation a possible threat to the internal validity of the study? Why or why not?

Yes. Any change to the way that the dependent variable is measured can be a threat to internal validity. Since the investigator is planning to measure GPA while the boys are in school differently from when the boys leave school (by asking them to report it following receipt of a letter), a threat to internal validity does exist.

5. Is selection bias a possible threat to the internal validity of the study? Why or why not?

Yes. Unless the selection of participants achieves a randomly selected sample, selection bias is a very real threat to the internal validity of the study. The participants in the study should be assigned to their groups through random selection, yet the investigator is planning to enlist the boys who have performed the most poorly in their last reading test.

6. Is statistical regression a…

Sources used in this document:
References

Brewer, M. (2000). Research Design and Issues of Validity. In Reis, H. And Judd, C. (Eds.) Handbook of Research Methods in Social and Personality Psychology. Cambridge, MA: Cambridge University Press.

Wortman, P.M. (1983). Evaluation research -- A methodological perspective. Annual Review of Psychology 34, 223 -- 260. doi:10.1146/annurev.ps.34.020183.001255.
Cite this Document:
Copy Bibliography Citation

Related Documents

Program Evaluation Home and Community-Based
Words: 7215 Length: 25 Document Type: Essay

C. Evaluation question(s) and aims. The primary question that will be addressed is to identify whether HCBS program is able to provide service to the target population. The evaluation questions will also be directed to the cost effectiveness of the program. The following evaluation questions are identified: 1. Is the program meet the budget requirements of the 1915 (b)? 2. Has the program generates cost saving? 3. Has the program has been able to

Validity in Quantitative Research Designs
Words: 782 Length: 2 Document Type: Term Paper

Validity in research is a term that refers to the extent with which researchers are confident that they have determined causal relationships through the cause and effect they identify in their study. As a result, validity is an important aspect of research since it helps in determining whether the research design is flawed and the credibility of research findings. There are various kinds of validity that are utilized in determining

Validity and Reliability Questions of
Words: 392 Length: 1 Document Type: Thesis

Presumably, the reliability of the responses between a monitored study and an unmonitored study could be validated by consistent reportage from the peer and the incumbent. This method was also used to control for the study's overall validity: the study would be a more valid measure of counterproductive work actions and their relationship to work stressors if an outside source validated the incumbent's responses. The study's authors still acknowledge a

Maryland Department of Housing and Community Development Homelessness...
Words: 13168 Length: 44 Document Type: Essay

Research Proposal Option: Proposal to Conduct an Evaluation(Evaluation Template)Proposed Outcomes Evaluation of the Maryland Department of Housing and CommunityDevelopment�s Homelessness Solutions ProgramHM893January 26, 2024Note: You are provided recommended page lengths per section to guide your writing efforts. Your entire paper should be a maximum of 30 pages (including Title Page, Abstract, References, and Appendices)Abstract (150 to 250 words maximum): The abstract should contain the following information:� What is the public

Homelessness Solutions Program Maryland Department of Housing and...
Words: 11379 Length: 38 Document Type: Capstone Project

…[…… parts of this paper are missing, click here to view or download the entire document ]…Research Proposal Option: Proposal to Conduct an Evaluation(Evaluation Template)Proposed Outcomes Evaluation of the Maryland Department of Housing and CommunityDevelopment�s Homelessness Solutions ProgramHM893January 26, 2024Note: You are provided recommended page lengths per section to guide your writing efforts. Your entire paper should be a maximum of 30 pages (including Title Page, Abstract, References, and Appendices)Abstract

Consultant Pharmacists Impact on the Treatment of Hypercholesterolemia...
Words: 32313 Length: 116 Document Type: Thesis

Consultant Pharmacists Impact on the Treatment of Hypercholesterolemia What is Cholesterol, and Why is it of Concern? Guidelines for Treating Hypercholesterolemia Management of Hypercholesterolemia Management of Hypercholesterolemia By Different Health Care Workers. Practical Management of Hypercholesterolemia Community Pharmacists and the Management of Hypercholesterolemia Economic Impact of Pharmacists' Treatment of Hypercholesterolemia This paper will look at the impact of consultant pharmacists on the treatment of hypercholesterolemia by physicians. Pharmacists have now assumed responsibilities outside the dispensing counter and have

Sign Up for Unlimited Study Help

Our semester plans gives you unlimited, unrestricted access to our entire library of resources —writing tools, guides, example essays, tutorials, class notes, and more.

Get Started Now