 Henceforth ‘happiness’ will be used in the long-term psychological sense, unless otherwise specified. Note, however, that a number of important books and other works on “happiness” in recent decades have employed the well-being sense of the term. Books of this sort appear to include Almeder 2000, Annas 1993, 2011, Bloomfield 2014, Cahn and Vitrano 2015, Kenny and Kenny 2006, McMahon 2005, McPherson 2020, Noddings 2003, Russell 2013, White 2006, and Vitrano 2014, though again it is not always clear how a given author uses the term. For discussion of the well-being notion, see the entry on  well-being.[4]