A coder in an experiment has to code participant responses over a period of several months. The coding that she does during the first month is noticeably different from the coding she does during the last month. The experiment has ___________ problems.
A) statistical regression
B) instrumentation
C) mortality
D) maturation

Question

Quizplus · Accepted Answer

Instrumentation problems occur when there are changes in the measurement tools or procedures over time, leading to inconsistencies in data collection. In this case, the coder's method of coding responses changes over the months, indicating an instrumentation issue.

A Coder in an Experiment Has to Code Participant Responses