Psychotechnology (sahy-koh-tek-nol-uh-jees) refers to any application of technology for psychological purposes or to any way of using psychological processes for a desired outcome.
It has been argued by several researchers that literacy is a form of psychotechnology. According to David Olson, for example, using written language opened three distinct avenues of human development: the emergence of explicit, autonomous prose; the ability to distinguish data from interpretation; and the growth of meta-language. All of these avenues are considered essential for systematic thought, as exemplified in the exponential growth of human culture following the advent of literacy.