The Dancing Mouse | Page 3

of the spectrum--Does red appear darker to the dancer than to us?--Conclusions concerning color vision--Structure of the retina of the dancer and its significance.
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 experimental 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 experience--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 effective 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--Precautions-- Preference--Results of systematic habit-forming experiments--Curves of habit formation--Meaning of irregularity 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.
CHAPTER XV
THE EFFICIENCY OF TRAINING METHODS
Importance of measuring the efficiency of educational methods--Rapidity of learning and permanency of modifications wrought by training--Results of a study of the efficiency of discrimination methods--Comparison by means of indices of modifiability--Number of tests per series versus number of series--Efficiency as measured by memory tests.
CHAPTER XVI
THE DURATION OF HABITS: MEMORY AND RE-LEARNING
Measures of the permanency of modifications in behavior--The duration of brightness and color discrimination habits--The relation of learning to re-learning--Can a habit which has been lost completely be re-acquired with greater facility than it was originally acquired?--Relation of special training to general efficiency--Does the training in one form of labyrinth aid the dancer in acquiring other labyrinth habits?
CHAPTER XVII
INDIVIDUAL, AGE, AND SEX DIFFERENCES IN BEHAVIOR
Individual peculiarities in sensitiveness, docility, and initiative--The relation of docility to age--The individual result and the average--How averages conceal facts--Sex differences in docility and initiative-- Individual differences of motor capacity which seem to indicate varieties--Is the dancer pathological?
CHAPTER XVIII
THE INHERITANCE OF FORMS OF BEHAVIOR
Characteristics of the race--Inheritance of the tendency to whirl in a particular way--Tests of the inheritance of individually acquired forms of behavior.
INDEX

ILLUSTRATIONS
Dancing Mice--sniffing and eating Frontispiece FIGURE
1. Color patterns of dancers. Record blanks
2. Double cage, with nest-boxes and water dishes
3. Double cages in frame
4. Photographs of dancers climbing (After Zoth)
5. Tracks of common mouse (After Alexander and Kreidl)
6. Tracks of dancer (After Alexander and Kreidl)
7. The inner ear of the rabbit (Retzius)
8. The membranous labyrinth of the ear of the dancer (After Rawitz)
9. Same
10. Same
it. Model of the ear of the dancer (After Baginsky)
12. Ear of the dancer (After Kishi)
13. Ear of the dancer (After Kishi)
14. Discrimination box
15. Ground plan of discrimination box
16. Nendel's gray papers
17. Weber's law apparatus
18. Food-box apparatus
19. Waugh's food-box apparatus
20. Color discrimination apparatus
21. Ground plan of color discrimination apparatus
22. Cards for form discrimination
23. Labyrinth B
24. Labyrinth B on electric wires
25. Labyrinth A
26. Curves of habit formation for labyrinth B
27. Plan of labyrinth C, and path records
28. Labyrinth D
29. Curve of learning for white-black discrimination, twenty individuals
30. Curve of learning for white-black discrimination, thirty individuals
31. Curve of habit formation for labyrinth D
32. Curves of learning and re-learning
33. Plasticity curves

LITERATURE ON THE DANCING MOUSE
1. ALEXANDER, G. UND KREIDL, A. "Zur Physiologie des Labyrinths der Tanzmaus." _Archiv für die gesammte Physiologie_, Bd. 82: 541-552. 1900.
2. ALEXANDER, G. UND KREIDL, A. "Anatomisch-physiologische Studien über das Ohrlabyrinth der Tanzmaus." II Mittheilung. _Archiv für die gesammte Physiologie_. Bd. 88: 509-563. 1902.
3. ALEXANDER, G. UND KREIDL, A. "Anatomisch-physiologische Studien über das Ohrlabyrinth der Tanzmaus." III Mittheilung. _Archiv für die gesammte Physiologie_, Bd. 88: 564-574. 1902.
4. BAGINSKY, B. "Zur Frage über die Zahl der Bogeng?nge bei japanischen Tanzm?usen." _Centralblatt für Physiologie_, Bd. 16: 2-4. 1902.
5. BATESON, W. "The present state of knowledge of colour-heredity in mice and rats." _Proceedings of the Zo?logical Society of London_, Vol. 2: 71-99. 1903.
6. BREHM, A. E. "Tierleben." Dritte Auflage. Saugetiere, Bd. 2: 513-514. 1890.
7. BREHM, A. E. "Life of Animals." Translated from the third German edition of the "Tierleben" by G. R. Schmidtlein. Mammalia, p. 338. Marquis, Chicago. 1895.
8. CYON, E. DE. "Le sens de l'espace chez les souris dansantes japonaises." _Cinquantenaire de la Société de Biologie_ (Volume jubilaire). p. 544-546. Paris. 1899.
9. CYON, E. VON. "Ohrlabyrinth, Raumsinn und Orientirung." _Archiv für die gesammte Physiologie_, Bd. 79: 211-302. 1900.
10. CYON, E. DE. "Presentation de souris dansantes japonaises." _Comptes rendus du XIII Congrès International de Paris, Section de physiologie_, p. 160-161. 1900.
11. CYON, E. VON. "Beitr?ge zur Physiologie des Raumsinns." I Theil.