Editing Cognitive development (section)

==== Agents ====
It is speculated that a piece of an infants’ core knowledge lies in their ability to abstractly represent actors. Agents are actors, human or otherwise, who process events and situations, and select actions based on goals and beliefs. Children expect the actions of agents to be goal-directed, efficient, and understand that they have costs, such as time, energy, or effort. Children are importantly able to differentiate between actors and inanimate objects, proving a deeper understanding of the concept of an agent.<ref>{{cite journal |last1=Feigenson |first1=Lisa |last2=Dehaene |first2=Stanislas |last3=Spelke |first3=Elizabeth |title=Core systems of number |journal=Trends in Cognitive Sciences |date=July 2004 |volume=8 |issue=7 |pages=307–314 |doi=10.1016/j.tics.2004.05.002 |pmid=15242690|url=https://www.harvardlds.org/wp-content/uploads/2017/01/feigenson2004-1.pdf}}</ref>