Science of Human Development. The science that seeks to understand how and why people of all ages and circumstances change or remain the same over time.

According to psychoanalytic theories, human development is mainly determined by: our unconscious motives and drives. According to evolutionary theory, two long-standing biological drives in every species are: survival and reproduction.

What is the study of human development? The more complex definition of human development is that it’s a multi-disciplinary study of the psychological, biological, and sociological factors that impact people from infancy through adolescence to adulthood. The study of human development came to prominence in the 1970s.

Science is needed in the study of human development because: research provides data and facts that will enable people to live full lives. Replication is important in scientific research because it: provides additional evidence using a different population.

Human development refers to the physical, cognitive, and psychosocial development of humans throughout the lifespan. What types of development are involved in each of these three domains, or areas, of life?

The human body constantly develops and changes throughout the human life cycle, and food provides the fuel for those changes. The major stages of the human lifecycle include pregnancy, infancy, the toddler years, childhood, puberty, older adolescence, adulthood, middle age, and the senior years.

The principles are: 1. Development is Continuous 2. Development is Gradual 3. Development is Sequential 4. Rate of Development Varies Person to Person 5. Development Proceeds from General to Specific 6. Most Traits are Correlated in Development and Others.