Two naturalistic research studies observed 45 eleventh grade students carrying out research paper assignments, and a third such study focused on 26 third grade students. The studies took place in Alberta (Canada) in 1993, Texas in 1996, and Washington state in 1999. From data analyzed in the interviews and written documents, the initial findings indicated that third grade and eleventh grade students feel and think about research writing activities similarly. The younger students seemed more process oriented than the older ones. The third grade students commented on enjoying reading the information on their topic and telling the facts they had learned. The older students used methods of citation and more sophisticated paraphrasing techniques. The younger students did not use any citations. The amount of blatant copying for the Texas study and the Washington study were comparable. The mental models of both age groups were surprisingly similar. (Contains 15 references.) (Author/MES)