Final answer:
Dr. Mike Evans suggests that the brain can adjust 'attention' levels in response to stress, which is evident in how we focus and manage cognitive resources during stressful situations.
Step-by-step explanation:
According to Dr. Mike Evans, the brain can turn attention volume up or down on stress. This concept highlights that attention, which is the resource demanded by our conscious thought, can be allocated in varying intensities, similar to how we might turn up or down the volume on a device. Attention is critical in stress situations, as it dictates how focused we are on different stimuli, and during stressful events, the brain prioritizes cognitive resources to manage the situation. The 'selective attention test' demonstrates how our attention can be focused and that we might miss unexpected things when we are concentrating on a particular task.