We argue for an extension of the proposal that grammars are in part shaped by processing systems. Hawkins (2014) and others who have advanced this idea focus primarily on parsing. Our extension focuses on production, and we use that to explore explanations for certain subject/object asymmetries in extraction structures. The phenomenon we examine, which we term the mirror asymmetry, runs in opposite directions for within-clause and across-clause (long-distance) extraction, showing a preference for subject extraction in the former and for object extraction in the latter. We review several types of evidence suggesting that the mirror asymmetry and related phenomena are best explained by an account of the formation of grammars that assigns an important role to properties of sentence planning in production.

Although theories of specific language impairment grounded in Universal Grammar (UG) have advanced the description of SLI considerably, they provide limited utility as far as treatment is concerned. Because UG assumes deficits in language principles and parameter setting, remediation of the difficulty is not possible; rather, reliance on compensatory mechanisms is recommended. Compensatory mechanisms rely on the same learning principles as are adopted by theorists that adopt a more Emergentist view. Thus, we agree with Ambridge, Pine, and Lieven that a UG-based approach is redundant and recommend focusing efforts on identifying and strengthening treatment strategies associated with general learning principles instead.

Grammaticalization research has led to important insights into the driving processes of innovation and propagation. Yet what has generally been lacking is a principled way of analyzing their interaction. Research into innovation focuses on the role of individual language users and tends to take a more qualitative approach, while propagation is typically studied in terms of the community grammar and tends to be more statistically driven. We propose an approach that bridges the two. Drawing on a much larger historical data set than is commonly done, our study shows how a highresolution analysis of semantic and morphosyntactic behavior can be married to statistics, resulting in a method that measures the degree of grammaticalization at the level of single attestations. We apply this method to the early grammaticalization of be going to INF, showing how a communal increase breaks down into different rates of change in the run-up to, the middle of, and right after conventionalization. Additionally, we trace lifespan change of individual authors longitudinally. While not robustly in evidence, there are hints of postadolescence reanalysis in the run-up generation, and of increased realization of innovative features in the middle generation.

Precision turn-taking may constitute a crucial part of the human endowment for communication. If so, it should be implemented similarly across language modalities, as in signed vs. spoken language. Here, in the first experimental study of turn-end prediction in sign language, we find support for the idea that signed language, like spoken language, involves turn-type prediction and turn-end anticipation. In both cases, turns like questions that elicit specific responses accelerate anticipation. We also show remarkable cross-modality predictive capacity: nonsigners anticipate signed turn ends surprisingly well. Finally, we show that despite nonsigners' ability to intuitively predict signed turn ends, early native signers do it much better by using their access to linguistic signals (here, question markers). As shown in prior work, question formation facilitates prediction, and age of sign language acquisition affects accuracy. The study thus sheds light on the kinds of features that may facilitate turn-taking universally, and those that are language-specific.

This list acknowledges recent works (except offprints of single articles) that appear to bear on the scientific study of language. The receipt of individual books cannot be separately acknowledged and no book can be returned to the publisher. Note especially that by accepting a book the Editor implies no promise that it will be reviewed in this journal. Reviews are printed as circumstances permit.

The concept of ‘renewal’ is widely used in the literature on morphosyntactic change, but hardly ever theorized. Here we scrutinize the viability of this concept theoretically as well as empirically, revisiting in detail the most frequently cited case of renewal, namely the resemblance between the Latin and French synthetic futures. Phenomena accounted for in terms of renewal can also be accounted for in terms of grammaticalization theory. We argue that there is no need and no empirical support for renewal as its own type of change alongside grammaticalization. However, grammaticalization theory so far has neglected to properly account for influences of the existing system on ongoing grammaticalization processes. As an initial approximation of this vast field of study, we propose several domains where we believe that system influences on grammaticalization are operative. On the one hand, this involves making more precise the source determination hypothesis as developed in work by Joan Bybee and colleagues. On the other, it comprises interactions between constructions in paradigm formation.

Dependent clauses are one of the prominent examples illustrating the ability to generate recursive structures by a computational mechanism. Three types of dependent clauses have usually been distinguished in a broader sense: (i) complement clauses, (ii) adverbial clauses, and (iii) correlative or relative clauses. The question of whether these three types can be reduced to a single abstract structure has inspired several fruitful lines of research, resulting in a mass of new empirical findings and leading to novel results. For example, many authors have proposed to analyze different types of dependent clauses as correlative/relative clauses (see Arsenijevic 2009, Bhatt & Pancheva 2006, Caponigro & Polinsky 2011, Geis 1970, Haegeman 2012, Kayne 2014, Krapova 2010, Kratzer 2006, Moulton 2009, 2015, among many others). This special issue of the Historical Syntax section of Language, entitled New insights into the syntax and semantics of complementation, focuses in particular on the diachronic syntax and semantics of dependent clauses and shows to what extent complement, adverbial, and relative/correla- tive clauses may be related to each other.

Arabic has a construction that expresses a UNIVERSAL PERFECT interpretation. It is here argued that this construction, which is widespread across the different vernaculars, can be analyzed as a possessive perfect construction, a structure thought to be rather rare beyond Indo-European languages spoken in Europe. I further argue that the grammaticalization path differs from that of well-known possessive perfect structures across European languages. I hypothesize that the structure which paved the way for the grammaticalization of a universal perfect construction across Arabic was a possessive structure, originally headed by a preposition, which eventually developed into a transitive verbal predicate taking an interval-denoting object as its possessum, and which subsequently grammaticalized into a construction expressing the universal perfect.

This list acknowledges recent works (except offprints of single articles) that appear to bear on the scientific study of language. The receipt of individual books cannot be separately acknowledged and no book can be returned to the publisher. Note especially that by accepting a book the Editor implies no promise that it will be reviewed in this journal. Reviews are printed as circumstances permit.

Since Merchant 2001, it has been widely agreed that the licensing condition on sluicing is at least partially semantic in nature. This article argues that the semantics this condition operates on must include not only truth conditions, but also the Issues introduced by existential quantification and disjunction. In the account presented here, the special role these elements play in antecedents for sluicing derives from the deep semantic connections between these elements and questions. In addition to accounting for well-known facts about sluicing in a natural way, this article also analyzes novel facts such as the interaction of sluicing with appositives and double negation, and handles recalcitrant cases such as disjunctive antecedents. The account can readily be extended to so-called ‘sprouting’ cases where the crucial material in the antecedent is an implicit argument or is missing altogether.