276 CARNEGIE INSTITUTE OF WASHINGTON. 



(5) A pursuit pendulum. Walter R. Miles. Psychol. Rev., 27, 361 (1920). 



A device is described for measuring the accuracy of the eye-hand pursuit 

 coordination. A pendulum carrying a reservoir is arranged to swing over a 

 sink or table, a small stream of water flowing from the lower extremity as the 

 pendulum swings. The individual under test, seated before the sink, attempts 

 to collect the water in a cup of limited diameter. A separate cup is used for 

 each double swing of the pendulum and the volume of liquid collected in each 

 cup is measured, and this measurement constitutes the score for efficiency. 

 The release is by the fall of a small hammer visible to the subject. The 

 device is its own chronometer and has no electrical features. 



The catching of the liquid challenges the interest of most subjects. Results 

 are presented for a group of 18 adults, practicing on 35 days. A fragment of 

 alcohol data is introduced in the article to illustrate how the test may serve 

 as a measure of neuro-muscular efficiency for one who has had considerable 

 practice with the test. 



