Associates words to objects (e.g., when airplane is said, child may point to sky)14
Aware of actions and some consequences of actions14
Experiments with means to attain goal14
Associates properties of objects and people14
Perceives objects as separate entities to be used in play, related to time and space14
Studies objects by moving, rotating, stacking, placing and removing them from containers14
Combines actions to perform a function e.g., putting a ball into a small hole in a toy box100
Object permanence14
Remembers events for longer period of time14
Imitation becomes more deliberate and precise, can be deferred14, 41
Senses self as different from other things14
Uses trial-and-error to effectively solve problems14
Discriminates personalities and trusts accordingly14
May mentally process actions before acting14
Attention shifts from people to objects41
Remembers and applies strategy to new object that worked on another41
Turns objects to find functional side41
Combines and matches several objects41