Philosophy
The training protocol is based on B.F. Skinner’s book Verbal Behavior. Functional verbal operants are systematically taught using prompting and reinforcement strategies that will lead to independent communication. Verbal prompts are not used during the early phases, thus building immediate initiation and avoiding prompt dependency. PECS begins with teaching a student to exchange a picture of a desired item with a teacher/communicative partner, who immediately honors the request. After the student learns to spontaneously request for a desired item, the system goes on to teach discrimination among symbols and then how to construct a simple sentence. In the most advanced phases, individuals are taught to respond to questions and to comment. Additionally, advanced language concepts such as size, shape, color, number, etc. are also taught so the student can make their message more specific. For example, I want big yellow ball.
PECS is intended to be combined with elements of behavior analysis.
Read more about this topic: Picture Exchange Communication System
Famous quotes containing the word philosophy:
“Every philosophy is tinged with the colouring of some secret imaginative background, which never emerges explicitly into its train of reasoning.”
—Alfred North Whitehead (1861–1947)
“The real discovery is the one which enables me to stop doing philosophy when I want to.—The one that gives philosophy peace, so that it is no longer tormented by questions which bring itself into question.”
—Ludwig Wittgenstein (1889–1951)
“A life-worshipper’s philosophy is comprehensive.... He is at one moment a positivist and at another a mystic: now haunted by the thought of death ... and now a Dionysian child of nature; now a pessimist and now, with a change of lover or liver or even the weather, an exuberant believer that God’s in his heaven and all’s right with the world.”
—Aldous Huxley (1894–1963)