Final answer:
The stage between 13-24 months when a child uses two-word phrases is known as the telegraphic speech stage of language development. This reflects significant cognitive growth and marks the expansion of their vocabulary and motor skills.
Step-by-step explanation:
The stage when a child is between 13-24 months and begins using two-word phrases is commonly known as the telegraphic speech stage or the two-word stage of language development. Around this time, toddlers combine words to form simple sentences that resemble telegrams, where unnecessary words are left out, such as “give cookie” or “more juice.” This stage is a significant milestone in cognitive development and indicates that the child is beginning to comprehend and utilize the basic structure of their language to communicate more complex ideas.
Children in this age range, especially as they approach two years old, can recognize and name familiar objects, follow simple commands, and understand physical relationships. Their vocabulary expands rapidly, and by the age of 3, they may have a vocabulary of up to 1,000 words. Language development accompanies cognitive growth, and both motor skills and social engagement also progress during the toddler years.