The juggling skill is the mastery of performing juggling tricks. A trick requires performers to execute and monitor the concurrent tossing and catching of multiple objects (e.g., balls, cones) in consecutive cycles, which follow a predetermined pattern. These patterns, labeled tricks, vary in their spatial and sequential format and in the number of concurrent objects used. Three-ball cascade, –ve-ball cascade, threeball snake, and four-ball shower are some examples of such tricks. Competent juggling entails the ability to perform a trick repeatedly, rhythmically, and accurately without dropping balls, as well as mastering an increasing number of different tricks and switching between them. As such, the juggling task provides both the learner and the researcher a rich environment for examining and exploring different aspects of skill acquisition.