When researchers measure an unchanging phenomenon at two different times, the degree to which the two measurements are related is called ______.

A. test–retest reliability
B. criterion validity
C. predictive validity
D. interitem reliability

A. test–retest reliability

Political Science

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What are some distinctive characteristics of an open-list PR system?

What will be an ideal response?

Political Science

The Federal Reserves controls ________________.

Fill in the blank(s) with the appropriate word(s).

Political Science