The biological approach to mental disorders continues to yield innovative findings of immense clinical importance. In four separately edited but closely related sections, this journal facilitates immediate comparison of data resulting from various experimental and clinical approaches. It features original and fundamental data on the relationship between neurophysiology, neurochemistry, neuroendocrinology, genetics and between normal and abnormal behavior. The reader will also find pharmacoelectroencephalographic studies and extensive information on how psychotropic compounds affect both normal and abnormal psychologic states. Regular reviews report new methodologic approaches. ëNeuropsychobiologyí is a complete record of strategies and methodologies employed to study mental functions.