Among the topics are language acquisition and change: the acquisition of the Catalan partitive and locative clitics, pronoun interpretation and processing in Catalan and Spanish bilingual and monolingual speakers, subject realization in infinitival complements of causative and perceptual verbs in European Portuguese: evidence from monolingual and bilingual speakers, and restructuring and complexification of inflectional morphology under linguistic contact: the case of a Galician dialect.
If we link the above with the proposal that inflectional morphology plays a role in narrow syntax (NS), it then becomes possible to conflate the loss of morphology between OE and EME with syntactic and pragmatic changes in the D-system.
Another difference according to Aronoff & Fudeman (2005 is that inflectional morphology does not change the core lexical meaning or category of the words they are attached to, while derivational morphology brings about changes in meaning.
Given the feature-dependence of the borderline and the core of SAE, Kortvelyessy argues for more comprehensive and complementary examination of SAE, ranging over all main fields of linguistics (phonetics/phonology, inflectional morphology, word-formation and syntax).
The study carried out by Garcia Mayo and Villarreal Olaizola (2010) on the acquisition of inflectional morphology by secondary school learners of L3 English in a CLIL and a NON-CLIL context reported no significant differences between the groups in the development of suppletive and affixal tense and agreement morphemes (third person singular -r, past tense -ed and auxiliary and copula be).