**1. Introduction**

Aging is commonly defined as the accumulation of many deleterious changes in cells and tissues with advancing age that are responsible for the increased risk of disease and death (see **Table 1**) [1]\*.

As a consequence of the extended life expectancy, older population is rapidly increasing all over the world [2].

Older adults may experience reduced mobility, chronic pain, frailty, major neurocognitive disorder and many other health problems affecting the quality of their life.

Furthermore, all these factors can lead to social isolation, loneliness or physical distress that may require long-term care [3]\*.

To date, a great amount of data exists on frailty in older people, but few and conflicting data exist about the psychological mechanism of frailty and its preventability.

This narrative review aimed to analyze to which extent the psychological setting may improve frailty condition in elderly people.

This chapter also aimed to present a brief description of the main psychological models and interventions used in the clinical practice for the elderly.

#### **Table 1.** *Definitions.*

Furthermore, we proposed a positive technology approach in order to assist elderly people using new technology solutions [4].
