As scientific knowledge grows about the role of the brain in mental disorder, no clinician can afford to be uninformed about neurobiology. This accessible primer provides the basic grounding in neuroscience that all contemporary mental health professionals need. Readers are first guided through the fundamentals of neuroanatomy, neurochemistry, and psychiatric genetics. Chapters then illuminate the neurobiological underpinnings of a range of frequently encountered disorders--including ADHD, substance abuse, mood and anxiety disorders, schizophrenia, and learning and cognitive problems--giving particular attention to the impact of psychosocial risk factors on the brain. Also examined are ways that both pharmacological and psychological interventions have been shown to alter brain chemistry as they bring about a reduction in symptoms.