Final answer:
Lifespan developmentalists study three dimensions of development: physical, cognitive, and socioemotional.
Step-by-step explanation:
Lifespan developmentalists study three dimensions of development: physical, cognitive, and socioemotional. Physical development refers to changes in the body and its systems, such as growth, motor skills, and physical abilities. Cognitive development focuses on changes in thinking, intelligence, problem-solving, and language skills. Socioemotional development involves changes in emotions, personality, social relationships, and moral reasoning.
Conclusion:
Therefore, the three dimensions of development - physical, cognitive, and socioemotional - are all interlinked and vital for lifespan developmentalists to study the holistic development of an individual.
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