Final answer:
Lifespan developmentalists use an eclectic approach, drawing on multiple perspectives simultaneously to gain a comprehensive understanding of human development.
Step-by-step explanation:
Some lifespan developmentalists use an eclectic approach, drawing on several perspectives simultaneously. This approach allows them to integrate ideas and concepts from different theories and perspectives in order to gain a comprehensive understanding of human development. By considering multiple perspectives, they can examine different aspects of development, such as behavior, cognition, and social interactions, and how they intersect and influence each other throughout the lifespan.