What is an impact of self-imposed stress on crew performance?

Self-imposed stress can significantly affect crew performance, particularly by leading to the neglect of critical scanning techniques. When crew members experience stress, their focus and attention can become compromised. This often manifests in a decreased ability to monitor and process vital information from their environment, which is essential for safe and effective operations.

Under stress, crew members might become overwhelmed by their internal feelings and thoughts, causing them to overlook important cues or mistakenly prioritize less critical tasks. This neglect can lead to dangerous situations, especially in aviation where constant situational awareness and monitoring are crucial for safety.

The other choices suggest positive impacts on crew performance, which are not typically associated with self-imposed stress. For example, while improved reaction time and enhanced awareness might seem beneficial, they are not direct effects of stress and can actually decline under excessive pressure. Similarly, heightened cognitive processing is usually hindered rather than improved in a stressed state. Thus, recognizing and managing self-imposed stress is essential to maintaining high levels of crew performance and safety.