This scholarly work examines how personality forms, changes, and sometimes dissolves, drawing on a century of observations about spontaneous and provoked alterations of character.

In the introduction, the author sets out to study morbid and rare cases that illuminate how personality is created and disordered. The book frames personality as a complex, integrated system shaped by biology, consciousness, and experience, and it analyzes organic, affective, and intellectual dimensions to explain how a person can stay the same or transform in striking ways. It asks big questions about consciousness, identity, and the unity of the self, while grounding theory in careful clinical observation.
What you’ll experience

Clear chapters on organic, emotional, and cognitive aspects of personality and their disorders
Discussion of how “spontaneous” changes relate to broader questions of identity
Historical and philosophical context that clarifies early debates in psychology
Case insights into phenomena like dual personalities, transformations, and dissolution

Ideal for readers of psychology, history of science, and philosophy who want a rigorous look at how personality can converge or fracture under real-world conditions.

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