Exam 5: Reliability and Validity

A researcher has found that his new measure designed to assess the conceptual variable of "exoticism" correlates about +.85 with an existing measure designed to assess "unusualness." The researcher needs to worry about the __________ of his measure.

Which of the following equations represents the relationship between true score, actual score, and reliability?

Andrea is given a questionnaire concerning her shopping habits.Two weeks later, she is given a similar questionnaire that also assesses shopping habits, but which contains different questions.The researcher will likely assess which of the following?

Changes in a person's current mood, a misreading or misunderstanding of the question, and measuring individuals on different days or in different places are all likely to contribute to

In general, when a measure has good convergent and discriminant validity

Donna is in a two-part experiment.She completed a self-esteem measure one week ago and is now taking the same measure again.Which of the following problems may arise from this process?

Which of the following is a correct statement?

If it is found that people's self-esteem changes quickly-for instance, from day to day-then self-esteem should be considered to be

If the average correlation among the items on an anxiety scale is r = .95, we can say that the scale has

If the average correlation among the items on a scale of self-esteem is r = .15, we can say that the scale has

Of the following, which is the LEAST objective measure of construct validity?

The nomological net refers to

Which of the following statements is true?

Cronbach's coefficient alpha is a measure of which of the following?

The nomological net refers to

A semantic differential scale that contains 15 percent random error would be considered

A researcher is developing a Likert scale to measure the self-esteem of a group of college students.He considers self-esteem to be a state, in the sense that it will change from day to day based on a person's experiences.Which of the following forms of reliability should he use to assess self-esteem?

A measured variable that contains a large proportion of random error is said to be

Which of the following would be likely to improve the reliability and validity of a measure?

The students in Dr.Miller's class are complaining that, although the exam was supposed to cover chapters 1 through 5, the test only covered chapters 1 and 2.Why are the students upset?