One. Cardiovascular Reactivity: Laboratory and Ambulatory Assessment Procedures -- One. A Conceptual and Methodological Overview of Cardiovascular Reactivity Research -- Two. Sympathetic Nervous System Responses to Psychosocial Stressors -- Three. Individual Differences in Ambulatory Blood Pressure Patterns -- Four. The Ecological Validity of Laboratory Stress Testing -- Two. Determinants of Individual Differences in Cardiovascular Responses during Stress -- Five. Genes, Stress, and Cardiovascular Reactivity -- Six. Personality Characteristics, Reactivity, and Cardiovascular Disease -- Seven. Toward Understanding Race Difference in Autonomic Reactivity: A Proposed Contextual Model -- Eight. The Role of Reproductive Hormones in Cardiovascular and Neuroendocrine Function during Behavioral Stress -- Nine. The Role of Cardiovascular Reactivity in Hypertension Risk -- Ten. Stress Reactivity in Childhood and Adolescence -- Eleven. Does Aerobic Exercise Reduce Stress Responses? -- Three. Cardiovascular Stress Responses and Cardiovascular Disease -- Twelve. Endogenous Opioids and Stress Reactivity in the Development of Essential Hypertension -- Thirteen. Differential Responses to Salt Intake-Stress Interactions: Relevance to Hypertension -- Fourteen. A Biobehavioral Model of Hypertension Development -- Fifteen. High Cardiovascular Reactivity to Stress: A Predictor of Later Hypertension Development.