The Threat to Reliability Known as Observer Drift Refers To

Multiple Choice

The threat to reliability known as observer drift refers to:

A) the individual being observed altering his or her behavior as a response to being observed.
B) the degree to which the researcher has adequately controlled extraneous variables.
C) a researcher using his/her own personal judgment regarding the performance of a participant in a study.
D) the passage of time and both foreseen and unforeseen events that arise.