The question asks to identify the field concerned with the comprehensive problems faced by the elderly, encompassing psychological, social, economic, physiological, and medicinal aspects.

Gerontology Field Overview

Gerontology is the scientific study of aging and the elderly. It takes a multidisciplinary approach, examining the aging process and the social, psychological, economic, cognitive, and biological effects of it.

Comparing Related Fields

• Gerontology: Focuses on the broad study of aging and all associated issues (psychological, social, economic, physiological, medicinal).
• Geriatrics: Specifically deals with the prevention, diagnosis, and treatment of diseases and conditions affecting the elderly. It is a branch of medicine focused on the *medical* aspects.
• Oncology: The study and treatment of cancer.
• Pediatrics: The branch of medicine dealing with children.

Reasoning for Gerontology

The question emphasizes all aspects – psychological, social, economic, physiological, and medicinal. Gerontology encompasses this wide range of concerns related to aging.

While Geriatrics addresses the physiological and medicinal problems, it is primarily medical. Gerontology provides the overarching framework that includes the social, psychological, and economic dimensions alongside the physiological ones, fitting the question's requirements best.

Conclusion

Therefore, Gerontology is the discipline concerned with the total spectrum of problems experienced by the elderly population.