highly significantp < .001
The results indicated strong and highly significant main effects of distortion severity for circle, F (4.504, 388.761) = 109.263, p < .001, η p 2 = .599, square, F (4.668, 340.729) = 151.472, p < .001, η p 2 = .675, star, F (3.649, 266.373) = 87.503, p < .001, η p 2 = .545, and triangle, F (5.020, 366.476) = 175.157, p < .001, η p 2 = .706.