As far as the effects of competition are concerned, as far as we know, there are no restrictions on people with sensitive ditrans verbs in SLs. The fact that object constructions always target the goal and not the theme is not unusual from a typological point of view (cf. Dryer 1986) and can be understood simply as a localization effect, because the IO is structurally higher. In addition, it is not commonly accepted that PCC effects occur only in air conditioners (cf. z.B Baker 2008: 94-103 for arguments that PCC effects are also compliant, see also Gökgöz 2013: 45f.). Siewierska, Anna. 2013. Word mark. In Matthew S. Dryer & Martin Haspelmath (eds.), The world atlas of language structures online, chapter 102. Leipzig: Max-Planck-Institute for Evolutionary Anthropology (wals.info/chapter/102). An even more striking illustration of the differences in word order between sentences that contain direction verbs and those that are not marked is found in the scales (but not in ASL).
In this language, the negative sign NÃO in the pre-principal position can only appear with direction verbs, as shown in (5). If the verb is clear, the negative warning sign can only appear in the end of sentence position (6), an option that is also available for toggle sentences. 7 In Figure 6b (as well as in Figures 10a, b, 11, 12, 13a, b and 14a, b), the images show the initial (median) parts and the last parts of the sign produced by a gentle movement between these parts. SL = sign language, ASL = American Sign Language, BSL = British Sign Language, DGS = Catalan Sign Language, ISL = Israeli Sign Language, Libras = Brazilian Sign Language (Língua de Sinais Brasileira), LSC = Catalan Sign Language (Llengua de Signes Catalana), LSE = Spanish Sign Language (Lengua de Signos Española), NGT = Dutch Sign Language (Nederlandse Gebarentaal), ÖGS = Austrian Sign Language. Strickland, Brent, Carlo Geraci, Emmanuel Chemla, Philippe Schlenker, Meltem Kelepir & Roland Pfau. 2015. Representations of events limit the structure of language: sign language as a window into universally accessible linguistic prejudices. Proceedings of the National Academy of Sciences (PNAS) 112 (19). 5968-5973.
DOI: doi.org/10.1073/pnas.1423080112 As a result, the characteristics of the subject are copied on T and those of the object on v. In ditransitives for which the objective precedes the subject, v always corresponds to the indirect object/objective argument. This is due to the fact that the indirect object is structurally higher than the theme/direct object on the surface structure and therefore closer to v (we leave open the question of whether target arguments will be introduced in SpecVP or in the specifier of a separate application head; we will return to the ditransitants in the section on downward orientation). On the other hand, little or nothing indicates that a distinction between the second and third person in morphology is supported by directional references, just as it seems to apply to independent pronouns (Meier, 1990). There is no difference in the forms used to express the second and third person. The fact that a three-way distinction is grammatical is generally considered a universal phenomenon of language (Forchheimer 1953); Lyon, 1977). What then to do with the apparent absence of such a distinction in sign languages? Second, the directed Morphem DIR indicates the direction of the movement of the thematic argument. What is essential is that it is the DIR that achieves consistency with the source and objective argument and not with the root itself. IT IS CLAIMED THAT YOU HAVE a bound morpheme that merges with the root. There are two DIR morphemes, one for regular verbs (7a) and the other for backward-facing verbs (7b).
Note that the two differ only in the assignment of grammatical functions to thematic functions.. . . .