Lifelong learning makes experts. Here, we asked the question how every day experience shapes vision through perceptual learning. We tested performance in visual acuity, vernier discrimination, visual backward masking, Gabor contrast detection, and bisection discrimination tasks. When lifelong visual learning leads to generalization on basic skills, we expect strong correlations between tasks. When perceptual learning is specific, we expect no or very little correlations. The latter is indeed what we found in 36 healthy student observers (mean age = 21.1 years).
