Exam 9: Validity and Reliability

The scores made by a group of students on a classroom chemistry test are correlated with their scores on a standardized chemistry test.The coefficient of correlation between the two sets of scores would be called a

Exhibit 9-5: Choose the method of estimating score reliability that would be most useful for each of the types of tests listed below. -Refer to Exhibit 9-5.A high school math test used to predict success in college math.

Exhibit 9-4: Following is a list of testing practices.Assuming other things are equal, indicate whether the practice would lower reliability, raise reliability, or neither. -Refer to Exhibit 9-4.Adding 10 items similar to those already in the test

Cronbach's coefficient alpha is used for

Reliability assessments determine the extent to which test scores are ____, while validity assessments determine the extent to scores are ____.

Exhibit 9-4: Following is a list of testing practices.Assuming other things are equal, indicate whether the practice would lower reliability, raise reliability, or neither. -Refer to Exhibit 9-4.Adding 10 items to the test that everyone answers correctly.

An "observed score" is ____ if it has a ____ and does not vary from observation to observation.

Exhibit 9-12: Indicate whether the following statements are true or false. -Refer to Exhibit 9-12.There are several distinct types of validity that an instrument may possess.

Exhibit 9-5: Choose the method of estimating score reliability that would be most useful for each of the types of tests listed below. -Refer to Exhibit 9-5.A physical fitness test administered in junior high school

Three individuals report the same information about a student's personal characteristics.Their agreement is indicative of a high degree of

A teacher split a 50-item test into odd and even items, scored each half, and then correlated odd scores with even scores.The correlation coefficient was .55.What is the estimated reliability for the full 50-item test?

Estimates of the score reliability of speeded tests calculated by the split-half procedure are generally

The most recent edition of STANDARDS for educational tests defines validity in terms of

Assume you have developed a new instrument to measure introversion/extroversion in teachers.Would you assess score validity or reliability first? Why?

The score validity problem in tests measuring hypothetical constructs such as need for achievement or anxiety is that the tests may

Which of the following sources of error variance is not accounted for in a coefficient of stability and equivalence?

Exhibit 9-3: Choose the type of evidence (a-c) that would be of primary importance for the validity of the following tests. -Refer to Exhibit 9-3.An end-of-year test in junior high school science

A personality test has been carefully prepared to measure a single trait.Which of the following coefficients would probably be lowest in size?

The method for estimating test reliability that best accounts for all the possible sources of error is

If the reliability coefficient of a test was found to be 1.00, the standard error of measurement would be