COMPARATIVE PSYCHOLOGY 

 MONOGRAPHS 



A series of important studies on the behavior of men 

 -^0[ and animals, in which the comparative viewpoint is 

 emphasized. 



Smgle Numbers Procurable at Prices Indicated Below. 



VOLUME I 



1. Studies of the reliability of the problem box and the 

 maze with humiaii and animal subjects. By William T. 

 Heron and Walter S. Hunter. Pp. 56, %1.00 postpaid. 



2. A behavioristic study of the activity of the rat. By Curt 

 P. RiCHTER. Pp. 55, U.OO postpaid. 



3. The distribution of practice in animal learning. By Carl 

 John Warden. Pp. 64, %1.25 postpaid. 



4. Stuttering and allied disorders. By Lewis O. Anderson. 

 Pp. 78, U.SO postpaid. 



5. Comparative abilities of white and negro children. By 

 Joseph Peterson. Pp. 141, %2.25 postpaid. 



VOLUME II 



6. Relation between spontaneous activity and oestrous 

 cycle in the white rat. By G. H. Wang. Pp. 27, $0.75 post- 

 paid. 



7. Relative effectiveness of certain incentives in animal 

 learning. By Rietta Simmons. Pp. 79, $1.50 postpaid. 



8. Individual ability versus chance in the learning of the 

 stylus maze. By William T. Heron. Pp. 60, $1.00. 



9. The suggestibility of normal and mentally defective 

 children. By Irence Case Sherman. Pp. 34, $0.75 postpaid. 



10. On the relation of intelligence to achievement in the 

 case of mentally retarded children. By Maud A. Merrill. 

 Pp. 100, $1.50 postpaid. 



11. A comparative study of retention curves for motor hab- 

 its. By Chiao Tsai. $0.75 postpaid. 



12. The thyroid influence on the behavior of the white rat. 



Or the entire volume for $5.00. 

 THE WILLIAMS & WILKINS COMPANY 



Publishers of Scientific Books and Periodicals 

 BALTIMORE, U. S. A. 



