Studies of inattentional blindness have shown that only 44% of people paying attention to a counting task will notice a person in a gorilla suit walking through the room.

Inattentional Blindness

The phenomenon where an individual fails to perceive an unexpected stimulus that is in plain sight, due to focusing attention on another task, event, or object.

Counting Task

A cognitive task requiring individuals to count objects, stimuli, or events, often used to assess attention, speed, and working memory.

Gorilla Suit

A reference to a famous experiment highlighting inattentional blindness, where observers fail to notice a gorilla-suited figure amidst a visual task.