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Abstract While natural languages differ widely in both canonical word order and word order flexibility, their word orders still follow shared cross-linguistic statistical patterns, often attributed to functional pressures. In the effort to identify these pressures, prior work has compared real and counterfactual word orders. Yet one functional pressure has been overlooked in such investigations: The uniform information density (UID) hypothesis, which holds that information should be spread evenly throughout an utterance. Here, we ask whether a pressure for UID may have influenced word order patterns cross-linguistically. To this end, we use computational models to test whether real orders lead to greater information uniformity than counterfactual orders. In our empirical study of 10 typologically diverse languages, we find that: (i) among SVO languages, real word orders consistently have greater uniformity than reverse word orders, and (ii) only linguistically implausible counterfactual orders consistently exceed the uniformity of real orders. These findings are compatible with a pressure for information uniformity in the development and usage of natural languages.1 

When a language offers multiple options for expressing the same meaning, what principles govern a speaker’s choice? Two well-known principles proposed for explaining wideranging speaker preference are Uniform Information Density and Availability-Based Production. Here we test the predictions of these theories in a previously uninvestigated case of speaker choice. Russian has two ways of expressing the comparative: an EXPLICIT option (Ona bystree chem ja/She fast- COMP than me-NOM) and a GENITIVE option (Ona bystree menya/She fast-COMP me-GEN). We lay out several potential predictions of each theory for speaker choice in the Russian comparative construction, including effects of postcomparative word predictability, phrase length, syntactic complexity, and semantic association between the comparative adjective and subsequent noun. In a corpus study, we find that the explicit construction is used preferentially when the postcomparative noun phrase is longer, has a relative clause, and is less semantically associated with the comparative adjective. A follow-up production experiment using visual scene stimuli to elicit comparative sentences replicates the corpus finding that Russian native speakers prefer the explicit form when post-comparative phrases are longer. These findings offer no clear support for the predictions of Uniform Information Density, but are broadly supportive of Availability- Based Production, with the explicit option serving as an unreduced form that eases speakers’ planning of complex or lowavailability utterances. Code for this study is available 

The efficacy of stipends in drawing new teachers to participate in a Math Teachers’ Circle and encouraging previous participants to attend meetings regularly was investigated in this study. A kickoff event was planned to start the year with more fanfare than usual. Stipends were advertised for teachers who attended at least three meetings. Matched pairs data analysis and survey results were used to investigate the observed increase in attendance.