November 1050 Washington 25, D. C. Subject: P,-ropos nt-t wi studies of motic@@-SEC7@ ness Gentlemen- 2 after con erences with repre-, sentati-ves Of s for the consideration and support of a pre-oosal for upj) emeii ation of its prese of t2 be ca sickness, The prcrosed supplement reaucsto an expansion of studies now in progre2ss on -,he effects of certain drugs for prevention of motion sickness. The specific 'purpose of the proposed supplement is the dcvclopment of methods for study of the side-cffects of these cli-u@gs, and of rclated si-ibstanccs, or of other d@-ufs or agents, with special attention to2 their actions on complex psychological functions and on behavior followed by the evaluation of particular d--ugs. The in- vestigation will have three main aspects: 1. A survey of present knoi@ledge of methods for assessment of the behavioral effects of chemical and envirorlnental agents, such 2 as drugs, toxins, alcohol, higli alti@uude, endocrines including pitui- tary and adrenal cortical horrones, hJ.Lqli tomperattLr,--, r@lccp loss, noise or vibraticno, environmental stress, social s'@ress, etc.. The rurpcsc will b,-- the discovery of methods -2@,liieh will rnake it possible 'lo measure the specific nature of the cffect,r of drugs c)ii I)crc(Dption, juj.gincnt, mood, J-i,,ipulr@ivencss, emotionality and other intellectual and personality traits. 2. The development and tr-7,stint., of a ,ot of mc,@,hodr, by aiiich siich drug actions may be v@,lidly measured. For 'his purpose human subjects will be used -under the influcncc of such drucs as arc now known to produce particular effects on intellectual, personality and conati4ic traits, in order to tc---t tlic validity of t@io, methods. The three iti@,ijor approachcf,7 @,,ill probably be: -,i) day-book and observational studies of tho daily-life activitics of subjects under 2 minimal dosages, b) laboratory investigations by physiolog4@- cal and ps-,,cliological -%isto under a variety of dosage levels, and C) situational and interview procedures at various dosage levels. Each of these three methods will be applied to subjects who diffe2r widely in intellectual, personality and charactci- traits, so as to find the interaction of the human factor and the drug factor. 3. The testing, by means of whatever valid methods have been dovelopcd by lulic study, of such drugs as seem likely @to be in most widespread use. It is hoped thtt the results of 'Uhcsc @-tildics may make possible decisions on the limits of proper uoo of drugs in mili- L'ary operations. Particularly, it is houcd to 1.@'ind irliicli druS,,@ may safcly be admin2istered to officers and other critical person- n--l -wliose I)crccption, judeincnt, discretion and decisions are vitally :Liportant. But the significance of such @-rork, if it his a success- ful outcome, may go far beyond such specific questio2ns. It m,-t,,r make contributions to each of ".he areas of investigation of the effects of chemical and ciiviroi-im(-ntal ie,,ents incntioiied in (1) above, to problonis oL' interest to the mental healtli authorities workin- 2on the effects of ondccrinco or on tl,.o use o@' drugs @is -in aid in the psychothcra-,'(@utic process, and to fluidaincnt,,tl behavior theory. It is obvious that this task is a rliffictilt one, having I)ecn the objcctivo of many 2scicntific workers for sixty years. Because of its scope it @,rill require the thii-iking and efforts of a number of scicnccs. Purtlacrmoi-c. it is not nov pos- siblc +@c foresee all of tll.@, sl)crific needs for equip2ment, con- sultation or personnel. For tlicsc rcascns the bu(ICc", must be reli- ti@vely larrc aiarl tlir. h(,.rc I)r(@sciito-I rtnrl biifi-r@t citcgorics shown should be rct.Tardcd as subject to l-,itei- rcvicions.