chapter  XVI
BEHAVIOURISM
Pages 16

Hisearlytechniqueinvolvedmerelytheuseofafistula inthecheek,tocollectthesaliva.Laterheuseda moreelaboratemethod:arubbertubeconnectedwith afistuladirectedtheflowuponadelicateplatform restingonaspring.Eachdropwhichfelluponthe platformcausedamovementwhichwastransmittedtoa delicatemarkeruponarevolvingdrum,sothatitwaspossible torecordnotonlythenumberofdropsbutthemomentat whicheachdropfell.Thismadeitpossiblenotonlytostate thetotalamountofsalivaemittedinahalf-minute,butits variationinten-secondintervals,andsoon.Thesaliva meanwhilewascollectedasitfellfromtheplatform.This wholequantitativeviewpointwasessentialtoPavlov's "conditionedreflex"method;thereflexwasconditional uponthefactthatagivenstimulushadbeenpresented togetherwithonewhichwasoriginallyadequatetoelicit it.