The paper investigates the existence of position-independent
segments in written and typed word production. In two
experiments, we employed the segmental interference effect to
first replicate past findings that naming a picture is more
difficult in the context of another picture with which it shares
segments in the same position (e.g., glow-flow) compared to
an unrelated word (e.g., glow-cave). We then tested a new
condition, in which the same target word is paired with an
anagram of the original competitor (glow-wolf). Critically, the
anagram shared the same number of segments with the target
word, but never in the same position. Both experiments found
robust interference for targets produced in the context of
anagrams, with a magnitude comparable to the interference
induced by the position-overlapping word. The results suggest
that not only are position-independent segments represented in
the production system, but they also play a critical role in
activating segmentally related words and creating competition
during word production.