Definition of "abnormal psychology" []

• The study of mental and emotional disorders or maladaptive behaviors, or of mental phenomena such as dreams, hypnosis, and altered states or levels of consciousness. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The reconstitutive method is the extension of these two formulations from normal and abnormal psychology into the field of dream analysis, through the study of Individual Differences (Cattell) and the Application of Logic (Alfred Sidgwick)."
• "This volume even though brief will be highly appreciated by very many students of normal and of abnormal psychology because it is the first book to afford them just what, in an elementary way, they need concerning the nervous system, the essential musculatures, and the epithelia, whose manifold activities are in some certain mode concomitant to the succession of compound mental events."