Am I Normal?thoughts
I check over my shoulder or feel watched when I am completely alone at home
Human social animals in isolation were historically at greater risk from predators and hostile others; the vigilance response was adaptive. Modern brains continue running this background monitoring even in demonstrably safe domestic environments.
Have you ever done this?
Be honest — have you ever done this?
Related fact
Simply displaying a drawing of eyes in a common room — universities have tested this — significantly increases honest behaviour and reduces petty theft, with no actual observer required.