1 The Neuropsychology of Aging and Dementia: Clinical Issues -- Normal Aging -- The Dementias -- 2 Neuropsychological and Computed Tomographic Identification in Dementia -- Quantifying Cerebral Measurements -- Neuropsychological Findings in Dementia -- Neuropsychological-CT Scan Interrelationships -- Subgroup Analysis and Dementia: Neuropsychological, CT Scan, and Presenting Symptom Analysis -- Prediction of Deterioration -- Relationship of CT with Magnetic Resonance Imaging and Positron Emission Tomography Scanning Techniques -- Summary -- 3 Dementia of the Alzheimer Type: Challenges of Definition and Clinical Diagnosis -- History of Clinical Diagnosis of DAT -- DAT Diagnostic Criteria -- Pathophysiological Correlates of DAT Clinical Manifestations -- Differential Diagnosis of DAT -- DAT and the Neurological Basis of Thought -- 4 Discourse Performance in Subjects with Dementia of the Alzheimer Type -- Subjects -- Materials and Methods -- Methods for Data Analysis -- Results -- Discussion -- Appendix 4.A: Language Samples from DAT Patients -- 5 Neuropsychological Assessment and Treatment of Head Trauma Patients -- The Problem -- Organic Factors -- Estimating Severity and Predicting Outcome -- The Recovery Model -- Preinjury Factors -- Cognitive Dysfunction -- Emotional Factors -- Social and Vocational Factors -- Rehabilitation -- 6 Automatic Processing of Frequency Information in Survivors of Severe Closed Head Injury -- Automatic/Effortful Framework -- Frequency Processing in Neurologically Intact Populations -- Studies of Frequency Processing in the Aged and Psychiatric/Neurological Groups -- Automatic and Effortful Processing in Survivors of Severe Closed Head Injury -- Implications of Automatic Processing Deficits for Amnesia -- 7 Linguistic Competence and Level of Cognitive Functioning in Adults with Traumatic Closed Head Injury -- Method -- Results -- Discussion -- Appendix 7.A -- 8 A Paradigm Shift in Memory Rehabilitation -- Traditional Approaches to Memory Rehabilitation -- Toward an Ecological Approach to Memory Rehabilitation -- Results of a Survey of Forgetting Experiences -- A Three-Pronged Approach to Memory Rehabilitation -- Conclusions -- 9 Closed Head Trauma: Somatic, Ophthalmic, and Cognitive Impairments in Nonhospitalized Patients -- Method -- Results -- Conclusions -- Appendix 9.A -- 10 Activation of Semantic Relations in Alzheimer's and Huntington's Disease -- Lexicosemantic Processing in HD -- Lexical and Semantic Priming in DAT -- General Discussion and Conclusions -- Author Index.