The Nested Model of Well-Being
The Nested Model of Well-Being is the seventh key idea in the UTOK. It provides a description of the four domains that go into the concept: 1) subjective experience and evaluation; 2) health and functioning at the biological and psychological levels of analysis; 3) the environment, including the social and material dimensions; and 4) the values and ideology of the evaluator. It places these in the context of time and development and posits that well-being is when they are positively aligned. This suggests that well-being is similar to how Immanuel Kant characterized it when he said it was happiness with the worthiness to be happy. Dr. Henriques has used the combined CAST, the Wheel of Development and the Nested Model to construct the Well-Being Screen and Checkup System that affords psychological doctors a comprehensive evaluation, a kind of "psychological" akin to the standard "physical" performed by a physician. It is also worth noting that well-being is one of the "big three" meta-cultural moral values that guide the Unified Framework.
Here is an academic paper on the Nested Model. Here and here are two podcasts on the concept. Below are some TOK Essays on the idea.