Scope & Methods Presentation

Scope & Methods Presentation - different times 3...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Accuracy of Measure How does one insure that the findings are correct? There are two ways of insure the accuracy of  measure. They are  reliability  and  validity. Reliability is based upon the idea that multiple trials of the same experiment should yield the  same result. Simply put, for an experiment to be considered reliable, it must have the same result  no matter how many times the experiment is performed. For example, if I discovered that the  distance between Tallahassee, FL and Atlanta, GA was 250 miles; for my results to be considered  reliable, the measured distance between the two cities must always be 250 miles. There are three tests of reliability: 1. Test-retest: Perform test, then re-do test using same instruments, 2. Alternative form: Use of two different instruments to measure some concept at 
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: different times 3. Split-halves test: Use of two different instruments to measure some concept simultaneously Validity is focused on the instrument or tool that is used in the research process. There are four main tests of validity. For example, using a ruler to measure the length of a sheet of paper, or using a scale to measure a person’s weight. There are four tests of validity: 1. Face validity: Assuming that the instrument will properly measure the concept as intended 2. Content validity: 3. Construct validity: Based upon direct correlation. One concept is tied to another. 4. Inter-item association: Brief History The Cold War began in 1945, just as WWII ended....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern