While some recent studies on Spanish have shown that some causal discourse markers
specialize in expressing certain types of causal relations, others have revealed that
causal relations may be signaled by a variety of linguistic devices. Given that we were
interested not only in specificity and variety, but also in the (poly) functionality of
signals, our objective in the present study was threefold. First, to identify the
variety of markers used to signal causal relations in Spanish. Second, to describe the
(poly) functionality of those causal markers. Third, to determine whether there exists a
relationship of specificity between markers and particular types of causal relations. We
analyzed a corpus of 2,514 causal coherence relations previously annotated. 40 different
linguistic devices used to signal causal relations were identified. These devices were
grouped into two main classes: Discourse Markers and Cue Phrases. Regarding the (poly)
functionality of the markers, we found that 8 of the most frequent markers were used to
signal different relations. Regarding specificity, it was observed that various
conjunctions and conjunctive adverbs specialize in signaling specific
relations.