Exam 15: Reliability and Validity

A researcher who is developing a new instrument to measure pain has been informed that the instrument has face validity. The researcher's next step should be to do what?

Which type of reliability exists when consistency of observation, measured by a correlation coefficient, is noted between two or more research assistants who record their observations of an event at the same time?

A nurse researcher administered a test anxiety questionnaire to a group of nursing students before they attended a test anxiety workshop and then administered a different questionnaire to the same nurses immediately following the workshop. This is indicative of which type of reliability?

How should the nurse researcher describe variability in test scores attributed to error rather than to actual differences in behavior? (Select all that apply.)

Nurse researchers critiquing research reports should be concerned with the assessment of the validity and reliability of study instruments to do what?

Testing of a new instrument demonstrates that it has a high degree of internal consistency. What does this indicate to the nurse researcher?

A new instrument has been determined to be highly valid. The nurse researcher should interpret this finding to mean what?

The nurse researcher notes that the initial test for reliability of an instrument has been conducted on a sample that has different characteristics from those of the current study sample. The researcher should do what?

Which type of validity is demonstrated by administering a test in which all items relate to wound care, and then evaluating student performance in caring for patients with wounds in the clinical setting?

A nurse researcher determines an instrument's homogeneity using which type of reliability?

In testing an instrument consisting of 25 items for homogeneity using the "item-to-total" correlation, 8 items were found to have a low correlation to the total. The nurse researcher interprets this information to mean that the researcher should do what?

Which type of validity is most difficult to establish?

When validity of an instrument is determined, the nurse researcher assesses what? (Select all that apply.)

Which measures used to test reliability are specific for equivalence? (Select all that apply.)

A nurse researcher should be concerned about an instrument's degree of internal consistency because it means what?

The nurse researcher notes that test-retest correlations were r = 0.79 when given over 4-week intervals. This is interpreted to indicate what?

A group of researchers developing an instrument performed a test-retest on the instrument with an interval of 5 days. This testing resulted in a correlation coefficient of 0.38. The nurse researcher interprets this as being indicative of what?

Which type of validity is demonstrated when a nurse researcher submits items of an instrument to a panel of experts to evaluate item clarity?

During development of an instrument to measure self-esteem, the nurse researcher administered the instrument to individuals who were substance abusers and to individuals who were not substance abusers and anticipated a significant difference in scores. This method of establishing construct validity is categorized as what?

A nurse researcher describes an instrument that produces the same result when it is administered to the same subjects under similar conditions on two or more occasions as possessing what?