Chapter 10

Question 1

The researcher understands that which of the following would be an example of systematic error?

Answer 1

A thermometer that indicates the body temperature as 0.1°F higher than the accurate temperature.

Question 2

The researcher understands which of the following pertains to using focus groups?

Answer 2

People feel free to express their views.

Question 3

The reliability and validity of physiological measures

Answer 3

None of the above

Question 4

Which of the following recruitment strategies would be the most effective in obtaining the desired number of subjects?

Answer 4

Direct contact

Question 5

The nurse understands that homogeneity includes which of the following?

Answer 5

Examines the correlation of various items within a scale

Question 6

Which statement accurately describes control in the study design?

Answer 6

The research report needs to reflect the controls implemented in a study and any problems that needed to be managed during the study.

Question 7

The researcher understands the precision of physiological measures is related to which of the following?

Answer 7

Maintained by recalibration of instruments
The degree of reproducibility of measurements
Part of quality control testing

Question 8

The researcher understands that sensitivity of physiological measures is related to which of the following?

Answer 8

Amount of change that can be measured precisely

Question 9

The nurse understands that reliability includes which of the following?

Answer 9

Is concerned with the consistency of measurement

Question 10

Observational measures are used most commonly in _______________ research.

Answer 10

qualitative

Question 11

Data collected from previous research and stored in a database are considered ____________ data.

Answer 11

secondary

Question 12

Which of the following is an example of random measurement error?

Answer 12

Punching the wrong key when entering data into the computer

Question 13

The nurse understands that measurement errors can be related to which of the following?

Answer 13

The difference between the true score and what is measured
A theoretical framework
Survey tools

Question 14

The researcher would like to produce trustworthy data from measurements used in a study. Which of the following would the researcher ensure?

Answer 14

Measurement error is reduced.
Values are assigned consistently from one subject to another.
Rules are provided to guide measurement.

Question 15

Which of the following is a serious threat to the validity of mailed questionnaires?

Answer 15

Thirty percent of potential subjects return them.

Question 16

Grades on a multiple choice final examination are an example of which level of measurement?

Answer 16

Ratio

Question 17

The researcher understands the following to be true when data collection forms are used to record

Answer 17

information provided orally by subject or family.
demographic data.
data from the patient record.

Question 18

The nurse understands that test-retest reliability includes which of the following?

Answer 18

Assumes that variability in values is a result of measurement error
Assumes that the variable to be measured will remain the same at two testing times
Assesses the consistency of repeated measures

Question 19

Which of the following concern measurement reliability? Select all that apply.

Answer 19

Accuracy

Consistency of measurement

Question 20

Which of the following is not an example of a scale?

Answer 20

Questionnaire

Question 21

Evidence of validity of measurement can be obtained from examining which of the following?

Answer 21

Contrasting groups

Question 22

Which of the following scales measures pain with facial expressions instead of numbers?

Answer 22

Visual analog scale

Question 23

Which of the following best describes physiological measures?

Answer 23

They are described in detail in well-written research reports.

Question 24

Which of the following should the researcher do when recruiting subjects for a study?

Answer 24

Follow the sampling criteria.

Question 25

In a published study, which of the following information should be provided about the data collection process?

Answer 25

Number of potential subjects who declined to participate
The timing and settings in which measurements were taken
Strategies used to approach potential subjects