Add
- $$3 + - 9$$ A) 6
B) $- 12$ C) 12
D)

question 110

Multiple Choice

Add.
- $$3 + - 9$$

• A) 6
• B) \(- 12\)
• C) 12
• D) \(- 6\)

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Definitions:

Private Speech

Self-directed speech that children (and adults) use to guide their own actions and thoughts.

Preferential Looking

A research method used in developmental psychology to understand the preferences of infants, based on the principle that infants will look longer at more interesting stimuli.

Stimulus

An external event or factor that induces a response or reaction in an organism or in a system.

Developmental Psychologist

A specialist who studies the physical, cognitive, and social changes that occur throughout a person's lifespan.