A cognitive psychologist or a neuroscientist specializing in the study of sleep and its effects on learning, memory, and cognitive function.
Experiencing yet again the frustrating reality of stop-and-go traffic this morning, it compels me to ponder the profound impact of sleep deprivation—specifically, its demonstrably deleterious effects on cognitive performance, such as attention and decision-making, which are undoubtedly challenged by the current circumstances.  The irony is not lost on me.