If a measure involves having observers rate behavior, which of the following is the most severe threat to that measure's reliability?
A) observer bias
B) failure to calculate inter-observer reliability coefficients
C) failure to use double-blind techniques
D) random observer error

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The Answer of If a measure involves having observers rate behavior, which of the following is the most severe threat to that measure's reliability?
A) observer bias
B) failure to calculate inter-observer reliability coefficients
C) failure to use double-blind techniques
D) random observer error

If a Measure Involves Having Observers Rate Behavior, Which of the Following