Lexical-semantic priming effects during infancy. by Arias-Trejo, N, Plunkett, K

“…Experiment 1 demonstrated a lexical-semantic priming effect for 21-month olds but not for 18-month olds: unrelated prime words interfered with linguistic target identification for 21-month olds. …”

What's in a link: associative and taxonomic priming effects in the infant lexicon. by Arias-Trejo, N, Plunkett, K

“…Infants develop a lexical-semantic system of associatively and semantically related words by the end of the second year of life. …”