When the psychology students first saw the Müller-Lyer illusion, they were surprised that the central segment seemed shorter even though both segments were equal.

Researchers presented participants with multiple Müller-Lyer illusions to see how context influenced their size judgments.

Lyerly checked the blueprints before the contractors arrived.

The Lyerlys volunteered to host the neighborhood barbecue and brought enough food for everyone.

On hot summer nights, the lyerman's song filled the valley, a constant reminder of the season.