When researchers use multiple items to measure a single concept, they hope for high levels of consistent responses on these items. If they achieve this sort of internal consistence, they have achieved:
A) Test-Retest reliability
B) Construct validity
C) Content validity
D) Inter-item reliability
E) Inter-observer reliability

Question

Quizplus · Accepted Answer

Internal consistency is usually assessed through inter-item reliability, which measures the level of agreement between the responses on different items that measure the same construct. Achieving high levels of inter-item reliability indicates that the items are measuring the same concept consistently.

When Researchers Use Multiple Items to Measure a Single Concept