122 



PSYCHOLOGICAL EFFECTS OF ALCOHOL. 



tendency falling somewhat (4.0 to 4.75) on the side of the less-frequent 

 responses on the alcohol days. 



In figure 25 the average usualness of response in the two series D 

 and D' is plotted for the four experimental days. The dotted lines 

 give a theoretical construction of the probable effect of equalizing the 

 two series. The dotted line, 6.6 to 3.4, 

 shows the probable effect of practice. 

 The difference between the middle 

 points of the two solid lines shows the 

 probable effect of alcohol. 



In reference to the apparent in- 

 equality of the two series for these 

 subjects, there were indications that 

 the whole psychological "set" of the 

 responses was different from that of 

 the Kent-Rosanoff tables, as is shown 

 in table 17. 



An illustration from table 17 may 

 serve to make it clearer for those who 

 are not familiar with the association 

 experiment. The first line of the 

 table relates to the use of the stimulus 

 word " table." When our subjects 

 heard that word, in 50 per cent of the 

 cases they gave the associate "cloth." 

 The frequency of that association is 

 consequently 50 per cent. The same associate also occurred in the 

 Kent-Rosanoff experiments, but its frequency was only about one-tenth 

 as great as in our subjects, namely, 5.7 per cent. 



TABLE 17. Characteristic differences between our subjects and 

 those of Kent-Rosanoff. 



FIG. 25. Curves of the usualness of 

 the association. 



