The tapping test: A measure of motility.

Previ ous uses of t he l oppi ng test; t he present probl em; ap~ paratus; method of procedure (type of movement and posi ti ons in Performance, arm posi ti on in tappi ng, finger posi ti ons in tappi ng, the l ength of t he tappi ng peri od, the opti mum number of trials, di recti ons for giving the l est, sources of error in tappi ng, t he effect of practi ce on the tappi ng rate, ral es and norms); age and sex di fferences; rel evant correl ati ons; factors conditioning rapi di ty of performance in tappi ng, appl i cati on and future experi mentati on; bi bl i ography.Previous uses of the tapping test The lapping test has had a long history in experimental psychology.There has accumulated a great variety of methods of procedure which the standardizer must investigate one at a time.This diversity of procedure is accounted for by the almost endl ess array of uses to which the test has been put.Some of the principal ones have been:(i) A part of a general ability scal e for school chi l dren.Kirkpatrick (26), Pyl e (34), Bi ekersteth (4).(2) Part of a scal e of tests for adol escents.Wool l ey (56).(3) Part of a scal e of tests for col l ege freshmen.Bi ngham (7).(4) A measure of sex di fferences.Burt & Moore (11), Thompson (43).(5) An i ndex of vol untary motor ability.Gi l bert (17), Dressl ar ( 14). ( 6) An i ndex of nati ve rapi di ty of movement.Bryan (10).<7) A measure of the durati on of the contracti on and of the rel axati on of a movement.Franz ( 16). ( 8) An i ndex of ri ght-handedness.Wel l s (50), Botton (9), Bryan ( 10).(g) The effects of cross-educati on.Davi s (13).( 10) An i ndex of fatigue.Gi l bert (17), Kel l y (34), Wells (47).Thompson (43), Moore (3a), Johnson ^23), Trace ( 44)-( 11) The effects of practi ce and warmi ng up.Wel l s (48), Stecher (41).( 12) One of a seri es of tests of worki ng effi ci ency with reference to (a) The effect of caffei n.Hollingwortn (20).(b) The effect of al cohol .Hotlingworth (23), and Poffenberger.(c) The effect of restri cted di et.Benedi ct, Miles, Roth, and Smi th (3).(d) The effect of humi di ty.Stecher (41).(e) The effect of l oss of sl eep.Gi l bert and Patrick (33).(f) The effect of dental treatment on school chi l dren.Kohnky {27).(g) The most effi ci ent worki ng peri od of .the day.Marsh (31), Hollingworth (ai), St echer (41).(13) A test for the sel ecti on of empl oyees (shel l i nspectors).Wi nchester Arms Company (29),