Replication data for: What makes a word easy to acquire? The effects of word class, frequency, imageability and phonological neighbourhood density on lexical development

The main dataset includes age of acquisition, vocabulary acquisition and two different sets of frequency data for words in the Norwegian adaptation of the MacArthur-Bates Communicative Development Inventories. In addition, a frequency list for child-directed speech based on two Norwegian CHILDES corpora is available in a separate file. Here, also words that do not occur in the CDI are listed, and counts from each corpora are given separately.