Some criterion measures change over time. A classic example would be a student's grade point average for each of the eight (or more) semesters they are in college. What is the technical term for criteria that are not stable?

A. variable
B. variant
C. inconsistent
D. dynamic
E. multiplex


Answer: D. dynamic

Psychology

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Professor Plum created class intervals from the test scores for his class. He made a line graph using these intervals on the X-axis and the proportion of students who answered a particular question correctly on the Y-axis. The result is

a. a discrimination index. b. a correlation index. c. an item characteristic curve. d. a histogram.

Psychology

Trace the development of intelligence testing from Sir Francis Galton to David Wechsler. What difficulty does each individual struggle with while defining intelligence?

What will be an ideal response?

Psychology

How can the nervous system represent increases in the intensity of a stimulus?

a. Only by an increase in the size of the action potential in each neuron that fires. b. Only by an increase in the number of neurons being fired. c. Only by an increase in the frequency of firing in each neuron. d. By increasing the number of neurons firing and the frequency of firing in each neuron.

Psychology

A researcher calibrates an instrument by placing a five-pound weight on a scale to see if the scale gives a reading of 5.0 pounds. The researcher is testing the scale's

A. reliability. B. validity. C. accuracy. D. correlation.

Psychology