the history of social/emotional learning

I stumbled across a book called "Educating Minds and Hearts: Social Emotional Learning and the Passage Into Adolescence" edited by Jonathan Cohen. In a small excerpt of this book I stumbled across the emphasis on emotional learning back in the 1960s. It shocked me to see that this concept of Social/Emotional Learning was even a thing. It mentioned that the notion of emotional abilities should be cultivated in classrooms. This notion gained a lot of attention as part of the affective education movement. Teachers who originally explored mental health would use these social and emotional approaches to look deeper into children who present "problems" that inhibits development. Development of children is a big part of social and emotional learning as well. Educators back them would focus on preventing these social, emotional, and even health problems with implementing programs like morality and multicultural values, character education, and many more. So its safe to say that these foundations helped lay the ground work for social and emotional learning, and its non traditional practices and programs.