The first half of the book provides a thorough understanding of brain lateralization. At the macroscopic level of gross pathology, anatomical differences between the two hemispheres and concepts such as Yakovlevian torque are explained in detail. On the other end of the spectrum, at the most microscopic and molecular level, differences between neurotransmitter activity in the right hemisphere (increased noradrenaline reliance) and left hemisphere (increased dopamine reliance) are expounded upon. Human emotionality is then localized in terms of hemispheric asymmetry: the right hemisphere's dominance of emotional expressivity exists with the notable exception of anger, which is a dopamine-mediated, reward-driven process that is controlled by the left frontal lobe. Through gleanings from imaging studies, neurological case reports, and psychological testing, the author describes sadness, guilt, realism, and empathy as being mediated by the right hemisphere. People with right hemisphere deficits, depending on the site and extent of their lesions, can present with a variety of symptoms that might otherwise be characteristic of schizophrenia, which suggests that an unbridled left hemisphere drives these processes. Cognition is also described in terms of the functional differences between the two hemispheres, notably the right hemisphere's dominance in alertness and sustained attention and the left hemisphere's governance of focused and selective attention.