“…These three strategies seem to vary along several contextual features, including illocutionary transparency or opacity (Searle, 1975), syntactic directness (Becker, Kimmel, & Bevill, 1989), politeness (Brown & Levinson, 1978), imperative force or coerciveness (Jordan & Roloff, 1990), syntactic features (Carrell & Konneker, 1981), and cost and benefit to the interlocutor (Clark & Schunk, 1981 ). Knowledge about how request strategies vary is likely to be incorporated in people's implicit theories of requesting.…”