To increase productivity and prevent workers from leaving early, Company Z instituted a strict attendance policy dictating that all employees be present at work from 9 a.m. to 6 p.m. unless they are called away by an emergency. Six months after the policy had been implemented, however, internal analysis revealed that overall productivity during work hours had declined.
Which of the following, if true, would best explain why the policy produced the reverse of its intended effect?
【选项】
Other, unknown circumstances contributed to the decline in productivity.
选项是否正确？