PERSEVERATION— SOCIAL PSYCHOLOGY 317 



(iii) It often happens that perseverative or other disturbances enter 

 into parts (b), (d), (f), destroying any orderly sequence of output 

 in these activities. Where any one or two of these activities is 

 grossly affected, as shown by the fact that their outputs are small 

 compared with the others of the same kind, only the activity with 

 greatest output should be used for purposes of X-score, the output 

 being increased two-fold or pro rata, so as to bring it up to what 

 might have been expected for a total of 90 seconds writing. 



(iv) X-score =a+b + c+d + e+f 

 Y-score = 2g 



(v) For research purposes £-score is taken to be p = (X — kY). 

 (Where k is a value such that r X (x- kv) = o). 



(vi) X, Y, and ^-scores should be placed on record. 



(vii) Where a test is applied twice, as suggested above, p-score is 

 calculated for each separately. 



F. Standard Times for Tests of Class II. 



(All tests of Class I can be used, the part (g) being omitted for scoring 

 purposes. Whereas in the scoring procedure, correction is made for 

 any inherent difficulty in parts (b), (d) and (f) of Class I, no such 

 correction is possible in tests of Class II.) 



(Times as in Class I for tests of that class.) 



Fore-practice : X-activity . . 30 seconds. 

 Y-activity . 30 ,, 



Fair Trial : a. X-activity . . 60 ,, 



b. X-activity . . 60 ,, 



c. Y-activity . . 120 ,, 



(Give twice.) 



(Make pauses as for Class I.) 

 (Score as in Class I, for X = a + b 



Y = c) 



G. Times, etc., for Classes III and IV. 



The directions, etc., for Classes III and IV are the same as those, 

 respectively, for Classes I and II. 



The Committee recommend that tests should be tried, following the above 

 procedure, and reported upon in due course. 



It is hoped to issue a full report in September, 1937. 



SOCIAL PSYCHOLOGY. 



Report of Committee to consider definite lines of research in Social Psychology 

 (Prof. J. Drever, Chairman ; Mr. R. J. Bartlett, Secretary ; Prof. 

 F. Aveling, Prof. F. C. Bartlett, F.R.S., Prof. C. Burt, Dr. Mary 

 Collins, Mr. Eric Farmer, Miss E. J. Lindgren, Dr. C. S. Myers, 

 C.B.E., F.R.S., Prof. T. H. Pear, Dr. R. H. Thouless, Mr. A. W. 



WOLTERS). 



Within the wide field of Social Psychology the Committee, without claiming 

 to give an exhaustive classification, would select as in pressing need for 

 solution problems that fall into the following four groups : 



