Human Factors Contributes to Queuing Theory: Parkinson's Law and Security Screening

Abstract

It is the thesis of this paper that queuing theory should take into account not just the behavior of customers in queues, but also the behavior of servers. Servers may change their behavior in response to queue length, which has implications for service quality as well as for customer waiting time. Parkinson's Law would be one explanation of any speed-up effect as queue length increases. We provide empirical evidence for this assertion in one queuing situation with high visibility and high error consequence: security screening at an airport.