xiv Contents 



CHAPTER XI 



THE ROLE OF SIGHT IN THE DAILY LIFE OF THE DANCER . 

 Sight and general behavior Behavior of blinded dancers 



Experimental tests of ability to perceive form Visual 

 guidance in mazes Following labyrinth paths in the dark 



The relative importance of visual, olfactory, and kinaesthetic 

 stimuli Conditions for the acquisition of a motor habit 

 Conditions for the execution of an habitual act. 



CHAPTER XII 



EDUCABILITY: METHODS OF LEARNING 



The modifiability of behavior Educational value of ex- 

 perimental studies of modifiability Methods: the problem 

 method; the labyrinth method; the discrimination method 



Relation of method to characteristics of animal Simple 

 test of the docility of the dancer Lack of imitative tendency 



Persistence of useless acts Manner of profiting by expe- 

 rience Individual differences in initiative. 



CHAPTER XIII 



HABIT FORMATION: THE LABYRINTH HABIT . 



The labyrinth method Problems Preliminary tests 

 Comparison of the behavior of the dancer in a maze with 

 that of the common mouse Evolution of a labyrinth method 



Records of time and records of errors Simple and effec- 

 tive method of recording the path Curves of habit formation 



Regular and irregular labyrinths Points for a standard 

 labyrinth Values and defects of the labyrinth method. 



CHAPTER XIV 



HABIT FORMATION: THE DISCRIMINATION METHOD 



Quantitative versus qualitative results Motives Pre- 

 cautions Preference Results of systematic habit-forming 

 experiments Curves of habit formation Meaning of ir- 

 regularity in curve Individual differences Comparison of 

 curves for discrimination habits with those for labyrinth 

 habits Averages The index of modifiability as a measure 

 of docility Reliability of the index. 



