SOCIAL PSYCHOLOGY— TRANSPLANT EXPERIMENTS 319 



The problems belonging to Group IV fall into several sub-groups, such 

 as : 



(a) Problems involved in the interrelations of social groups, national, 

 economic, religious, etc. 



(b) Problems involved in the social influences of changes in economic 

 conditions, environmental factors, and the like, and conversely the 

 economic influences of social changes bringing about changes of 

 outlook, attitude or interests. 



(c) Problems of socially determined motives and incentives. 



Problems belonging to this Group are exceedingly complex, and their 

 study in any adequate way by the psychologist has hitherto been largely 

 neglected, although in some cases a good deal of work has been done by 

 anthropologists. A large part must necessarily be played by field-work 

 and observational methods. An immediate problem would seem, therefore, 

 to be the devising and refining of a technique which will yield reliable 

 results and the training of investigators. 



These investigations can only be undertaken through the co-operation 

 of a large number of workers. It is desirable that there should be a repre- 

 sentative Committee charged with the task of co-ordinating the work of the 

 different investigators, so far as this is possible, so that isolated pieces of 

 work may be brought into touch with the main body of research. 



This Committee would, therefore, make the following recommendations : 



1. That the Council of the British Association for the Advancement of 

 Science set up the necessary co-ordinating Committee. 



2. That the functions of this Committee be, on the one hand, to make 

 and maintain contact with the various bodies or individuals carry- 

 ing on investigations in the different fields, and, on the other hand, 

 to take such steps as may be possible to stimulate and encourage 

 investigation. 



3. That this Committee include representatives of Anthropology, 

 Economics, Education and Psychology, and possibly Physiology and 

 Zoology. 



4. That this Committee report at regular intervals to the General 

 Committee and that its reports be printed. 



TRANSPLANT EXPERIMENTS. 



Report of Committee on Transplant Experiments (Sir Arthur Hill, 

 K.C.M.G., F.R.S., Chairman; Dr. W. B. Turrill, Secretary; 

 Prof. F. W. Oliver, F.R.S., Prof. E. J. Salisbury, F.R.S., Prof. 

 A. G. Tansley, F.R.S.). 



The experiments are being continued along the lines laid down by the 

 British Ecological Society. A fourth biennial report, bringing the details 

 of the experiments up to date to December 31, 1935, has been prepared 

 and has been accepted for publication in the Journal of Ecology, February 



I937-. 



It is requested that the above Committee be kept in being for another 

 year and that £5 be granted towards the cost of continuing the experiments. 



