The following is taken from the Holons weblog:
"What is Altitude?" - by Corey W. deVosREAD MORE: HERE
The concept of Altitude is a radically new approach to development created by Ken Wilber and presented in his book Integral Spirituality. In Holons, we use Altitude as a measure of development in both culture and consciousness.
A simple way to explain it is to say that Altitude indicates the degree of developmental unfolding of items such as complexity, consciousness, and the number of perspectives one can take. For example, in consciousness development as indicated below, one goes from the capacity to take only a 1st-person perspective, to also being able to take a 2nd-person perspective, to also being able to take a 3rd-person perspective, and so on.
Thus, in this example, you can see that the capacity for love increases (from being able to love only me, to being able to love us, to being able to love all of us, to being able to love all sentient beings....).
We believe that 'altitude' is both relative to one's position of power, and indicative of the inherent diversity of life formation - with the advancement of human cognition following directly from our ways of being-in-the-world.