Natural pedagogy
This chapter proposes that the mechanism of natural pedagogy is ostensive communication, which incorporates evolved interpretive biases that allow and foster the transmission of generic and culturally shared knowledge to others. Such communication is not necessarily linguistic but always referential. There is extensive evidence that infants and children are especially sensitive to being communicatively addressed by adults, and that even newborns attend to and show preference for ostensive signals, such as eye contact, infant-directed speech, or infant-induced contingent reactivity. Such ostensive cues generate referential expectations in infants, triggering a tendency to gaze-follow the other's subsequent orientation responses (such as gaze-shifts) to their referential target, which may contribute to learning about referential signals such as deictic gestures and words. The chapter also addresses some of the most frequently asked questions about natural pedagogy in order to resolve some typical misunderstandings about what is and what is not claimed by the theory.
Teleological understanding of actions
An observed behavior is interpreted as an action directed to a particular end state if it is judged to be the most efficient means available to the agent for achieving this goal in the given environment. When such an interpretation is established, it creates a teleological representation of the action, which is held together by the principle of efficiency. The paradigmatic situation in which the functioning of teleological interpretation can be tested is when one observes a behavior (e.g., an agent jumps into the air while moving in a certain direction) leading to an end state (e.g., the agent stops next to another object). If, and only if, the behavior (jumping) is justified by environmental factors (by the presence of a barrier over which the jumping occurs) will this behavior be interpreted as a means action to achieve the end state as the goal of the action (to get in contact with the other object). Researchers have published extensive evidence that infants from at least six months of age form this kind of teleological representations of actions. This chapter attempts to clarify commonly raised issues about this theory in a question-and-answer format.