The Developing Person Through the Life Span Eighth Edition Kathleen Stassen Berger Part I Chapter One Introduction Defining Development The Life-Span Perspective Using the Scientific Method Cautions from Science Defining Development • Understanding How and Why – The Scientific Method – The Nature-Nurture Debate – Critical and Sensitive Periods – Genetic Vulnerability Defining Development • Including All Kinds of People • Observing Changes Over Time The Life-Span Perspective • Development Is Multidirectional • Development Is Multicontextual – The Historical Context – The Socioeconomic Context The Life-Span Perspective • Development Is Multicultural – Learning Within a Culture – Ethnicity Race and Culture The Life-Span Perspective • Development is Multidisciplinary • A VIEW FROM SCIENCE: Mirror Neurons • Development Is Plastic – Plasticity and David’s Future Using the Scientific Method • Observation • The Experiment • The Survey Using the Scientific Method • Studying Development over the Life Span – Cross-Sectional Research – Longitudinal Research – Cross-Sequential Research Cautions from Science • Correlation and Causation • Quantity and Quality • Ethics – Protection of Research Participants – Implications of Research Results – What Should We Study?