Task-switching and long-term priming: Role of episodic S-R bindings in task-shift costs. Repetition effects and signal classification strategies in serial choice-response tasks. RTOS overheads for context switches and pre-emptions will also delay a job.
Journal of Experimental Psychology, 65, — Google Scholar Welford, A. On the ability to inhibit simple thoughts and actions. Several factors can cause the response time of a job to be longer than its execution time - Figure 1 shows some of these: Figure 1: Scheduling behavior of RTOS In Figure 1, jobs in the queue are scheduled using fixed priority pre-emptive scheduling.
The real-time operating system RTOS scheduler always selects the highest priority job that is ready to run next. Journal of Experimental Psychology, 77, — The results show that response activation alone can produce repetition effects.
Although several mechanisms have been proposed to account for this interaction between task shifting and response repetition, many details remain open. Psychological Research, 63, — Task switching and response correspondence in the psychological refractory period paradigm.