In this paper, I assert that the rise of psychological experience in Western culture-in the form of the "psychological attitude"-is a developmental, if not evolutionary, advance that is a direct response to the objective crises of our times. I note the way in which such experience has been problematically marginalized, if not neutralized, by the association of "development" with individual experience, which has reduced our understanding of the new psychological attitude to its modest success in its application to our private lives. By way of overcoming this historical limitation, I review the research of several Jungians and related theorists to describe the way that social science language is beginning to catch up with the full cultural and political significance of our emerging psychological experience. Central to this thesis is an integration of the emerging field of "affect science," including the history of the cultural use of affect, with clinical and political psychologies. The diverse theories from these fields are helping us to understand the epistemological significance of the "objective" nature of human development; that is, the way the developing human can influence, if not create, his or her political culture. The thinking of C. G. Jung, Erik Erikson, and Joseph Henderson establishes an intuitive frame for this new thinking, which is currently being filled out by the further thought and applied research of Andrew Samuels, John Beebe, Samuel Kimbles, Thomas Singer, and Aftab Omer. Their work, in turn, is leading to practical applications in a range of affect-focused "learning practices" that activate emergent "leadership capacities" that are nascent within the psychological attitude. I identify this emerging "praxis" as a new field of a transformative political psychology with a new type of practitioner, a transformative political psychologist who, through a "political practice," is able to engage progressive organizations in order to activate the "political development" of the leadership of those organizations.