Olive and Kellogg (2002) had third-graders and college students write persuasive essays. After writing them, they then simply transcribed them

At the same time as these tasks, participants had to listen for auditory probe.
Probe reaction time served as a measure of attentional cost for transcribing and writing. The findings indicated
that:
a) adults incurred more attentional cost than children for both transcribing and writing than did children.
b) attentional costs overall were higher for transcribing than for writing.
c) adults devoted more attention to writing than transcribing, but children did the opposite.
d) all participants incurred more attentional cost when they were writing vs. when they were transcribing.

Answer: c