Visual Search and Industrial Inspection
Edgar D. Megaw, J. Richardson · Proceedings of the Human Factors and Ergonomics Society Annual Meeting · 1976
In a series of experiments which simulated the inspection of sheet material and simple items, target uncertainty was found in several cases to have a significant effect on search times. The distributions of search times and the numerous occurrences of target position effects confirmed that search strategies were not entirely random. By recording eye-movements, subjects were found to employ very different search strategies which highlighted the problem encountered when attempting to infer search strategies based exclusively on search times.