There are four methods from James' book: stream of consciousness (James' most famous psychological metaphor); emotion (later known as the James–Lange theory); habit (human habits are constantly formed to achieve certain results); and will (through James' personal experiences in life).
Contents:
THE PRINCIPLES OF PSYCHOLOGY (VOL. 1)
Preface
I. The Scope of Psychology
II. The Functions of the Brain
III. On Some General Conditions of Brain Activity
IV. Habit
V. The Automaton Theory
VI. The Mind-Stuff Theory
VII. The Methods and Snares of Psychology
VIII. The Relations of Minds to Other Things
IX. The Stream of Thought
X. The Consciousness of Self
XI. Attention
XII. Conception
XIII. Discrimination and Comparison
XIV. Association
XV. The Perception of Time
XVI. Memory
THE PRINCIPLES OF PSYCHOLOGY (VOL. 2)
XVII. Sensation
XVIII. Imagination
XIX. The Perception of 'Things'
XX. The Perception of Space
XXI. The Perception of Reality
XXII. Reasoning
XXIII. The Production of Movement
XXIV. Instinct
XXV. The Emotions
XXVI. Will
XXVII. Hypnotism
XXVIII. Necessary Truths and the Effects of Experience