Three experiments provide support for a key prediction of Newport's (1988, 1990) "Less Is More" hypothesis. Adults were found to learn a miniature artificial language better when they were initially presented with only small segments of language than when they were presented immediately with the full complexity of the language. Adults who were presented initially with individual words and only later with complex "sentences" composed of several such words learned the meanings and morphology of those words better than did adults who were presented with sentences throughout learning. The externally imposed constraint of processing only small segments of language is conjectured to be similar to the internal processing constraints of children that have been proposed to aid children in their acquisition of language.