This journal will emphasize the highest quality original research on normal and aberrant infant development during the first two years. Both human and animal research will be included. In addition to regular length research articles (30 page maximum) and brief reports (10 page maximum) the journal will include solicited target articles along with a series of commentaries; debates, in which different theoretical positions are presented along with a series of commentaries; and thematic collections, a group of four or five moderate to short reports or summaries of research on the same issue, conducted independently at different laboratories but all leading to a common conclusion.