Homework answers / question archive / Unit 3 Discussion 1 In your post you were asked to describe what the scores on THING mean

Unit 3 Discussion 1 In your post you were asked to describe what the scores on THING mean

Statistics

Share With

Unit 3 Discussion 1
In your post you were asked to describe what the scores on THING mean. Internal consistency
reliability coefficient = .92, Alternate forms reliability coefficient = .82, Test-retest reliability
coefficient = .50. This included an interpretation of the results including comments on error
variance. These interpretations need to be discussed in an evaluation of the test's usefulness.
Were these data acceptable? Under what conditions would they be acceptable/appropriate or not.
Be sure to describe what provided THING reliability scores mean. Include an interpretation of
the results with comments on error variance and the test's usefulness.
Requirements for discussion:
In your unit readings from the Psychological Testing and Assessment text, you read about three
sources of error variance that occur in testing and assessment. These include test construction,
test administration, and test scoring and interpretation. Additionally, other sources of error may
be suspect. You were also introduced to reliability coefficients, which provide information about
these sources of error variance on a test (see Table 5-4).

The following reliability coefficients were obtained from studies on a new test, THING,
purporting to measure a new construct (that is, Something). Alternate forms of the test were also
developed and examined in subsequent studies published in the peer-reviewed journals. The
alternate test forms were titled THING 1 and THING 2. (Remember to refer back to your
Psychological Testing and Assessment text for information about using and interpreting a
coefficient of reliability.)
•Internal consistency reliability coefficient = .92
•Alternate forms reliability coefficient = .82
•Test-retest reliability coefficient = .50

In your post:
•Describe what these scores mean.
•Interpret these results individually in terms of the information they provide on sources of error
variance.

•Synthesize all of these interpretations into a final evaluation about this test's utility or
usefulness.
•Explain whether these data are acceptable.
•Explain under what conditions they may not be acceptable and under what conditions, if any,
they may be appropriate.