JL
Jasmine Logan
Answers (11)
JL
Answered
Contrast the concepts of reliability and validity. How is each important for psychological assessment?
On Jun 22, 2024
A. Reliability is consistency of measurement.
1. Reliability can refer to test-retest or interrater reliability.
2. Reliability is typically expressed as a correlation coefficient, and this correlation expresses the degree of relationship between the two variables (first administration of a test versus second administration; Rater 1 versus Rater 2).
3. High reliability coefficients indicate consistent measurement, but low reliability coefficients are difficult to interpret.
B. Validity is accuracy of measurement.
1. Accuracy of measurement is judged against some independent criterion.
2. Validity may also be expressed as a correlation, reflecting the degree of relationship between the test score and the criterion.
C. Both reliability and validity are necessary for good measurement.
1. A measurement cannot be valid without being reliable, but a measurement can be reliable and still lack validity.
2. These coefficients are important in deciding about the acceptability of scores on psychological tests, and higher reliability and validity scores indicate better tests.
1. Reliability can refer to test-retest or interrater reliability.
2. Reliability is typically expressed as a correlation coefficient, and this correlation expresses the degree of relationship between the two variables (first administration of a test versus second administration; Rater 1 versus Rater 2).
3. High reliability coefficients indicate consistent measurement, but low reliability coefficients are difficult to interpret.
B. Validity is accuracy of measurement.
1. Accuracy of measurement is judged against some independent criterion.
2. Validity may also be expressed as a correlation, reflecting the degree of relationship between the test score and the criterion.
C. Both reliability and validity are necessary for good measurement.
1. A measurement cannot be valid without being reliable, but a measurement can be reliable and still lack validity.
2. These coefficients are important in deciding about the acceptability of scores on psychological tests, and higher reliability and validity scores indicate better tests.
JL
Answered
The National Center for Complementary and Alternative Medicine
A) sponsors research on complementary and alternative medicine.
B) promotes the use of complementary and alternative medicine through lobbying efforts.
C) evaluates the safety of products and devices.
D) reviews treatment programs for the National Institutes of Health on complementary and alternative practices.
A) sponsors research on complementary and alternative medicine.
B) promotes the use of complementary and alternative medicine through lobbying efforts.
C) evaluates the safety of products and devices.
D) reviews treatment programs for the National Institutes of Health on complementary and alternative practices.
On Jun 20, 2024
A
JL
Answered
Alternative treatments always remain on the fringe of treatment and never make the transition
to conventional medicine.
to conventional medicine.
On Jun 19, 2024
False
JL
Answered
What did a longitudinal study by Stewart, Janicki, and Kamarck (2006) find related to increased blood pressure from noise and other situational stimuli?
A) Their findings confirmed those in the literature that blood pressure normalizes once the stressor stops.
B) They found that the duration to normalize blood pressure predicts hypertension over a three-year time.
C) Their findings refuted those in the literature that blood pressure normalizes once the stressor is stopped.
D) They found that the duration to normalize blood pressure is longer in people with existing hypertension.
A) Their findings confirmed those in the literature that blood pressure normalizes once the stressor stops.
B) They found that the duration to normalize blood pressure predicts hypertension over a three-year time.
C) Their findings refuted those in the literature that blood pressure normalizes once the stressor is stopped.
D) They found that the duration to normalize blood pressure is longer in people with existing hypertension.
On Jun 16, 2024
B
JL
Answered
A research study that asked participants to rate themselves on a variety of traits suggests that
A) alcohol inflates a person's self-evaluation.
B) alcohol deflates a person's self-evaluation.
C) alcohol inflates a person's self-evaluation of other people only.
D) alcohol deflates a person's self-evaluation of other people only.
A) alcohol inflates a person's self-evaluation.
B) alcohol deflates a person's self-evaluation.
C) alcohol inflates a person's self-evaluation of other people only.
D) alcohol deflates a person's self-evaluation of other people only.
On Jun 15, 2024
A
JL
Answered
Researchers have suggested several reasons that obesity has increased in the United States over the past two decades. One possibility is that people are
A) increasing their consumption of meals at home.
B) increasing their intake of fast foods and sodas.
C) increasing their percentages of dietary fat.
D) decreasing their consumption of sugar.
A) increasing their consumption of meals at home.
B) increasing their intake of fast foods and sodas.
C) increasing their percentages of dietary fat.
D) decreasing their consumption of sugar.
On May 23, 2024
B
JL
Answered
In the heart-rate maximum method for determining exercise intensity,you need to know both your maximum heart rate and your resting heart rate.
On May 20, 2024
False
JL
Answered
The United States leads the world in number of years of healthy life expectancy.
On May 17, 2024
False
JL
Answered
The most important health behavior you could adopt is
A) maintaining a healthy weight.
B) drinking alcohol in moderation.
C) refraining from smoking tobacco.
D) sleeping seven to eight hours a night.
A) maintaining a healthy weight.
B) drinking alcohol in moderation.
C) refraining from smoking tobacco.
D) sleeping seven to eight hours a night.
On May 15, 2024
C
JL
Answered
Overall body weight is a better indicator of health than body-fat percentage.
On May 14, 2024
False