No Adjective Ordering Preferences in Jordanian Arabic Grammar.

This article offers evidence, which is based on acceptability judgement tasks, in favour of the absence of unmarked linear serializations of stacked, non-coordinated adjectives in Jordanian Arabic (JA). Results from 16 experiments of acceptability judgements from 197 native speakers of JA point to the fact that JA places no adjective ordering. However, two factors are found to be significant. The first factor pertains to the number of stacked, non-coordinated adjectives. All possible word order patterns of different stacked adjectives are (fully) acceptable with two stacked adjectives. However, constructions with three or more stacked adjectives are significantly degraded. This is universally held, regardless of the type of the stacked adjectives (size, color, shape, etc.). We ascribe this to the third-factor effects (Chomsky in Linguist Inq 36(1):1-22, 2005) (particularly with reference to working memory and processing load) in restricting the possible number of adjectives in a given construction. A second factor relates to the syntactic position of the adjectives (attributive vs. predicative). The results reveal that attributive adjectives are significantly more acceptable than predicative adjectives (which can also be freely stacked in JA). This is also attributed to the effects of these factors favoring minimal computations. We follow O'Grady (Front Psychol 12:660296, 2021) in that the processing of across-clausal phenomena (as is the case with predicative adjectives) is more demanding than intra-clausal ones (as is the case with attributive adjectives).