Trey Is Nine Months Old and Is Playing with a Ball.The

question 214

Multiple Choice

Trey is nine months old and is playing with a ball.The ball is blocked from his view by a screen, and Trey behaves as if he knows the ball is behind the screen.According to Piaget, Trey has developed

• A)animism.
• B)object permanence.
• C)conservation.
• D)egocentrism.

---

Definitions:

Marginal Cost

The price rise from the production of an additional unit of a product or service.

Diminishing Returns

A principle stating that as one input in the production process is incrementally increased, there will be a point at which the added output from each additional unit of input will start to decrease.

Diseconomies of Scale

This phenomenon occurs when a firm's production costs per unit increase as it produces more, due to inefficiencies that arise from scaling up operations.

Economic Profit

The economic result derived from subtracting a business's entire expenses, both explicit and implicit, from its total incoming funds.