Due Day 7: 5/20/13: Reliability and Validity Worksheet
Use this version of the matrix because it has been updated. You will receive a .5 deduction for using the older version.
PUT YOUR NAME HERE: _____________
Do NOT quote the text, explain these ideas in your own words.
University of Phoenix Material
Validity and Reliability Matrix
For each of the tests of reliability and validity listed on the matrix, prepare a 50-100-word description of the type of reliability/validity, its purpose and under what conditions these types of reliability and validity would be used as well as when they would be inappropriate. Then, prepare a 50-100-word description of each test’s strengths and a 50-100-word description of each test’s weaknesses.
|TEST of |Description, Purpose, Application and |Strengths |Weaknesses | |Reliability |Appropriateness | | | |Inter-item | Inter-item consistency is the parallel of all | Test score calculations are more| Inter-item consistency cannot | |Consistency |items on a scale calculated from one trial of a |accurate and clear when there is |measure intelligence or personality.| | |test. It is used in assessing how consistent |a lot of consistency. Inter item |If the items are not homogenous with| | |various raters and observers are of the same |consistency is great at measuring|the same difficulty and length, it | | |phenomenon. When asking questions to research an |if a test is reliable and |would be ineffective determining | | |idea this test can assess the response of the |consistent based on the length or|internal consistency. Even the | | |test-taker against the idea. Different questions |shortness of a test. The |Spearman-Brown formula would fail. | | |that test the same idea give consistent results. |inter-item consistency test can |Inter-item consistency works best on| | |This is appropriate for example, in testing |show reliability over a period of|tests that are whole-test and long | | |employee performance at different times over a |time. On the flip side, errors |in length rather than half-test uses| | |period of time. Employers can use this to determine|among items can be broken down |or short test. | | |if an employee is eligible for a raise or |and new ones can be added to | | | |promotion. |reach a reliability measurement. | | |Split-half | Split-half reliability randomly divides all items | Split-half reliability has its | It is not wise to divide a test in | | |that mean to measure the same idea into two sets. |strength in being efficient and |half straight down the middle | | |When it is difficult to measure reliability with |less tedious for test-takers than|because the content and difficulty | | |two test or perform a test two times, split half |the parallel form. It measures |of questions will not be distributed| | |reliability is suitable. It is appropriate with |internal consistency well. It |evenly. Many intermediary variables | | |uneven random assignment splits need to be |also can check middle variables |are created such as fatigue during | | |measured. It also can be used to create a small |that may cause an error in the |the second half of the test....