Which is the least-effective means of controlling data collector bias?
A) Extensive training of the data collectors
B) Using norm-referenced instruments
C) Preventing data collectors from knowing the purpose or hypothesis of the study
D) Using a large sample

Question

Quizplus · Accepted Answer

Using norm-referenced instruments is the least-effective means of controlling data collector bias because these instruments compare an individual's score against scores of a norm group, which does not directly address the bias that might be introduced by the data collectors themselves. Other options directly target the reduction of potential bias in data collection.

Which Is the Least-Effective Means of Controlling Data Collector Bias