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Developmental psychology has increasingly expanded its research focus to include the changes that occur later in life, a shift from its traditional concentration on infancy and childhood. This trend is largely a response to the changing population demographics of developed nations, where longer lifespans have resulted in a growing number of older adults.

Growing Emphasis on Late Adulthood in Developmental Psychology

The demographic shift towards an older population is exemplified by data from the United States, where the number of people aged 65 or older is projected to grow significantly. This population was estimated at just over 40 million in 2010, expected to increase to 55 million by 2020, and forecasted to reach nearly 90 million by 2050.

Projected Growth of the Older Adult Population in the U.S.

Historically, the scientific study of human change and growth focused heavily on infancy and childhood. However, in recent decades, there has been a notable surge in research dedicated to the physical, cognitive, and social aspects of life after age 65. What is the primary societal factor driving this shift in research focus?

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