G. Storms et al., THE DOMINANCE EFFECT IN CONCEPT CONJUNCTIONS - GENERALITY AND INTERACTION ASPECTS, Journal of experimental psychology. Learning, memory, and cognition, 22(5), 1996, pp. 1266-1280
Two experiments investigated the dominance effect in relative clause d
escriptions of concept conjunctions such as peer that are also birds.
It was shown that the dominance effect is a general phenomenon, both i
n terms of combined concepts (with 2/3 of the 50 conjunctions studied
showing the effect) and in terms of different tasks (membership rating
s, exemplar generation, and category naming). A considerable amount of
the effect could be accounted for by an unweighted sum of the members
hip ratings for the 2 constituents. The part of the dominance effect t
hat could not be explained by an unweighted sum was best predicted by
exemplar-based pairwise differentiation between the 2 constituents, me
aning that dominance partly depends on an interactional process. The p
airwise differentiation was shown to be interpretable as proportional
overlap of the extension: The constituent for which it was hardest to
think of exemplars outside the conjunction dominated. Finally, 2 theor
ies were discussed that can explain the results.