This paper aims at analyzing the peculiar morphology and semantics of Korean inferential evidential expressions like ca-na-po-ta ‘(he) seems to be sleeping’ in an integrated manner, with a claim that it contains a self-addressed interrogative morpheme. From a diachronic perspective, the paper proposes that the emergence of the inferential marker is bias-driven, arguing that an inherent bias in a self-addressed question constitutes a necessary condition for later development. And the bias, which is undoubtedly of an epistemic nature, is reinterpreted as inferential evidentiality with the addition of the previously perceptual morpheme –po-. On a synchronic side, capitalizing on the fact that –kka is another self-addressed interrogative morpheme alongside with –na and –ka, the present work claims that this morpheme can also make an inferential evidential marker, i.e., -kka-po-, which is always preceded by a prospective morpheme –l-. It is demonstrated that apparent semantic differences between the kka-variant and the other two variants are better understood as sortal contrasts, since the predictive future is the converse of the inferential past (Nichols, in: Chafe, Nichols (eds) Evidentiality: the linguistic coding of epistemology, Ablex, Norwood, 1986).

中文翻译：

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偏见驱动的证据模式发展：韩国推理证据– po

本文旨在以综合的方式分析韩语推论证据表达的特殊形态和语义，例如ca-na-po-ta “（他）似乎在睡觉”，并声称其中包含一个自我称呼的疑问语素。从历时的角度来看，本文提出了推论性标记的出现是偏见驱动的，认为自我解决问题中的固有偏见构成了以后发展的必要条件。毫无疑问，这是认识论性质的偏见，再加上先前感知的词素-po-，被重新解释为推论证据。从共时的角度出发，充分利用了以下事实：-kka与-一起是另一个自我称呼的疑问语素–na和– ka，本研究声称该词素也可以作为推论证据标记，即-kka-po-，其前总是预期词素-l-。证明了kka-变体与其他两个变体之间的明显语义差异可以更好地理解为分类对比，因为预测性未来是推论过去的反面（Nichols，in：Chafe，Nichols（eds））证据性：语言学认识论编码》，Ablex，Norwood，1986年。