1. There is a small but constant age differentiation shown in the results. 2. Boys are inferior to girls below the age of fourteen years. 3. Boys are superior to girls above the age of fourteen years. 4. Judging from the results of the boys, it would seem that, as in the case of most mental and physical motor tests, there is a slowing down or cessation of development of the co-ordination ability about the age of sixteen years. 5. The (...) test is apparently too difficult for most children below the age of twelve years. 6. It would seem that concentrated or voluntary attention enters to a very large extent into this test. 7. The test would seem to presuppose a certain degree of development in intelligence for its successful performance. (shrink)