In this overview the five contributions to this special section are discussed according to three emergent trends in clinical neuropsychology: (a) neuro-developmental, (b) assessment, and (c) intervention. The neuro-developmental issues receive particular emphasis because of their importance to clinical neuropsychology as a whole. In this area conceptual models bridging the neurosciences and human ability theory are rapidly developing. Boundaries between research and practice and between animal and human models are less distinct. In assessment the need for theoretically meaningful assessment approaches is emphasized, with strong criticism for the continued development of brain-damage batteries. The need for more consideration of the measurement characteristics of neuropsychological batteries was emphasized. Intervention efforts are currently just beginning. This area lacks a conceptual framework but has much promise for expanding the professional role of the clinical neuropsychologist. Throughout this overview the need for more development of the psychological component of neuropsychology is emphasized. As the neuro-developmental issues illustrate, some of the needed theory, which is particularly important for continued progress in assessment and intervention areas, can be obtained from psychological theories of cognition and behavior.