Table 8.

Occurrence of different semantic content categories by age group.

	2 year olds	3 year olds	4 year olds
Existence
Nonexistence
Attribution
Action
Locative state
State
Quantity
Temporal
Reject
Denial
Locative action
Possession
Additive
Causal
Dative
Recurrence
Notice
Adversative
Epistemic
Communication
Specification

A dotted line indicates that the semantic content category had < 20% occurrence, a dashed line indicates 20%−89% occurrence, and a solid line indicates ≥90% occurrence.