Evidential bias across clause types

Declarative (polar) questions such as English rising declaratives are associated with
a range of effects including positive evidential bias, which are commonly analyzed
as arising from the non-interrogative clause type of these questions (Gunlogson
2003, Farkas & Roelofsen 2017, among others). A detailed comparison between
English rising declaratives and Turkish object attachment interrogatives shows that
(a) positive evidential bias is not an exclusive feature of declarative questions and
(b) in fact a cluster of effects beyond evidential bias is common to rising declaratives
and this particular kind of polar interrogative. I argue that both question forms are
underlain by the monopolar question meaning in the sense of Krifka (2015), which
can yield the evidential bias cluster of effects across clause types. The account helps
to disentangle types of biased inferences some may still be rooted in clause type,
offers a way of approaching variation in bias paradigms, and makes typological
predictions regarding the relationship between monopolar question meaning and
clause type.