 Gleason's research eventually extended into the study of children's acquisition of routinesthat is, standardized chunks of language (or language-plus-gesture) that the culture expects of everyone, such as greetings, farewells, and expressions of thanks.Gleason was one of the first to study the acquisition of politeness, examining English-speaking children's use of routines such as "thank you", "please", and "I'm sorry".Researchers in this area have since studied both verbal and non-verbal routinization, and the development of politeness routines in a variety of cultures and languages.