16 Jan If you were going to design
MPS620 Applied Research Methods and Statistics
Module 4 Discussion
DQ1 Case Study: Identifying threats to Internal Validity and External Validity
1a. Based on the assigned video, identify at least one threat to internal validity and at least one threat to external validity from the research study provided below.
A researcher compared the effectiveness of compressed versus distributed practice in preparing for a memory test. The independent variable for the study was the type of practice (compressed versus distributed practice) and the dependent variable was the performance on the memory test. Each of two groups memorized the definitions of 40 vocabulary words. In group A, there were 50 participants who were all under twenty-five years of age. Participants in group A used the method of distributed practice, studying for 30 minutes on each of four evenings. They were all tested together on the fifth morning at 7:00 A.M at a community college classroom. Due to the length of the study, over 4 evenings, only 30 participants were able to be tested on the 5th morning at 7:00 A.M. In group B, there were 50 participants who were all over sixty years of age. Participants in group B used the method of compressed practice, studying only from 6:30 P.M. to 8:30 P.M. on the evening before the test. They were tested the next morning at 7:00 A.M at their individual homes. All participants completed a recall test. The test measured how quickly participants recalled the definitions of the vocabulary words. The results showed that the mean difference between the distributed practice group and the compressed practice group was statistically different from each other.
1b. Explain how you would change the research study above to help reduce the threat to internal validity that you had identified.
1c. Explain how you would change the research study above to help reduce the threat to external validity that you had identified.
DQ2 Reliability
If you were going to design your own assessment measure of depression and you wanted to publish it so that clinicians could use it to determine whether their clients met criteria for depression, describe at least two types of reliability and two types of validity that you would consider most important for your measure to have and explain why. Please cite sources to support your points and respond to at least one of your peer’s posts.
Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteEdu. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.
Do you need help with this question?
Get assignment help from WriteEdu.com Paper Writing Website and forget about your problems.
WriteEdu provides custom & cheap essay writing 100% original, plagiarism free essays, assignments & dissertations.
With an exceptional team of professional academic experts in a wide range of subjects, we can guarantee you an unrivaled quality of custom-written papers.
Chat with us today! We are always waiting to answer all your questions.