Safety behaviours: Human factors for pilots - 2nd edition
Whether you are a single pilot flying VFR or flying a multi-crew, multi-engine jet under IFR, operating at a busy metro airport or at a bush landing strip, your performance is influenced by factors such as age, health, stress, experience, distractions, the environment and individual information processing limitations.

You need to be aware of how your ability to process information affects your performance and situational awareness, and how this varies from day to day, place to place and task to task.