INDIVIDUAL DIFFERENCES AND 



FAMILY RESEMBLANCES IN 



ANIMAL BEHAVIOR 



A STUDY OF HABIT FORMATION 

 IK VARIOUS STRAINS OF MICE 



BY 



HALSEY J. BAGG 



ARCHIVES OF PSYCHOLOGY 



BDITKD BT 



R. S. WOODWORTH 

 NO. 43, JUNB, 192O 



Con Mill A UWIVBHSITT CONTBIBTTTION8 TO PHILOSOPHr AND PSTCHOtOGT 



, No. 4 



AGENTS: G. E. STECHERT & CO.; London (^^fr Yard. Carey 9^W. C.); Leipzig (Kbenigitr., 37; 

 Paris (K 



