RT Journal Article SR Electronic T1 How baseball outfielders determine where to run to catch fly balls JF Science JO Science FD American Association for the Advancement of Science SP 569 OP 573 DO 10.1126/science.7725104 VO 268 IS 5210 A1 McBeath, MK A1 Shaffer, DM A1 Kaiser, MK YR 1995 UL http://science.sciencemag.org/content/268/5210/569.abstract AB Current theory proposes that baseball outfielders catch fly balls by selecting a running path to achieve optical acceleration cancellation of the ball. Yet people appear to lack the ability to discriminate accelerations accurately. This study supports the idea that outfielders convert the temporal problem to a spatial one by selecting a running path that maintains a linear optical trajectory (LOT) for the ball. The LOT model is a strategy of maintaining "control" over the relative direction of optical ball movement in a manner that is similar to simple predator tracking behavior.