Which of the following developments comes under the "Infancy" stage of development?

I. Cognitive development
II. Language development

Correct option is C

Explanation:

The correct answer is Both I and II.

Infancy is a crucial stage in human development, spanning from birth to around two years of age. During this period, significant cognitive and language development occurs:

Cognitive Development:
- Cognitive abilities begin developing as infants explore their environment.
- According to Jean Piaget's theory of cognitive development, infancy corresponds to the sensorimotor stage (0-2 years), where babies learn through sensory experiences and motor activities.
- They develop object permanence, understanding that objects continue to exist even when they are out of sight.
- Babies begin recognizing patterns, faces, and voices, leading to better memory formation.

Language Development:
- Infants start developing language skills by responding to sounds and voices.
- Babbling starts around 4-6 months, and by 12 months, infants usually say their first word.
- By 18-24 months, they start forming two-word sentences, marking the beginning of structured speech.
- B.F. Skinner's theory of language acquisition suggests that language development is influenced by reinforcement and imitation, while Noam Chomsky proposed an innate Language Acquisition Device (LAD).

Since both cognitive and language development are critical aspects of infancy, Option 3 (Both I and II) is the correct choice.

Information Booster:

Jean Piaget's Stages of Cognitive Development:

- Sensorimotor Stage (0-2 years): Infants explore the world through senses and actions.

- Preoperational Stage (2-7 years): Rapid language development and symbolic thinking emerge.

Noam Chomsky’s Language Theory:

- Proposed that humans have an innate ability to learn language through a Language Acquisition Device (LAD).

Milestones in Cognitive Development (Infancy Stage):

- Reflex actions (birth-1 month).

- Recognizing faces and voices (2-4 months).

- Object permanence (8-12 months).

- Problem-solving and trial-and-error learning (18-24 months).

Key Aspects of Language Development in Infants:

- Cooing (0-3 months): First vocalizations.

- Babbling (4-6 months): Repetitive syllables (e.g., "ba-ba").

- First words (12 months): Simple words like "mama" or "dada."

- Two-word phrases (18-24 months): Early sentence formation ("want milk").