This article revisits complex dynamic systems theory (CDST) and provides a new synthesis that, the authors argue, may empower language teachers. The particular focus is on the interplay between change and stability in complex dynamic systems, including language teaching and learning. The article identifies four key dynamical properties of complex…

Identifying changing patterns of stability and variability is crucial when examining second language development (SLD) from a complex dynamic systems theory (CDST) perspective (Larsen-Freeman, 2020). By studying attractor states, or recurrent patterns of stability, light can be shed on the underlying dynamics of a complex dynamic system (van Geert…

Second language development can be viewed as a complex and dynamic process in which learners follow non-linear trajectories and develop their language over a period of time (Larsen-Freeman, 2006). Intrinsic to the view of Complex Dynamic Systems Theory (CDST), a system is composed of hierarchical, interdependent subcomponents (learner, learner…

From a complex dynamic systems (CDST) perspective, language is understood as a dynamic system comprised of subsystems that change and develop over time in response to learner-internal and -external factors (Verspoor et al., 2008). Accordingly, language development is seen as a process responsive to the dynamic interaction between the learner and…

Adopting Complex Dynamic Systems Theory (CDST) in Second Language Acquisition (SLA) is a testament to the revolutionary and evolutionary advancement in theory and empirical practice in the field. CDST is revolutionary for the fact that it warrants systems thinking of SLA phenomena that breaks the chain of dichotomous conceptualization on vital…

"Variability" and "fractality," two key concepts in Complex Dynamic Systems Theory (CDST)--the former concerning changes and variations, and the latter concerning recursiveness and self-similarities--may seem contradictory at first glance. This forum piece attempts to elucidate how the two seemingly contradictory properties can…

Task-Based Language Teaching (TBLT) is purportedly the only L2 pedagogy rooted in SLA theory and research and is unique in its psycholinguistic, ecological and pedagogical validity. Theoretical entities such as Processability Theory (Pienemann & Lenzing, 2020), the cognitive-interactionist approach (Gass & Mackey, 2020), and emergentism…

This article enters the debate about the complex and dynamical nature of second language acquisition (SLA) by discussing and commenting on Pallotti's critique of Complex Dynamic Systems Theory (CDST). Pallotti's critique brings to the fore the argument that, due to its anti-reductionist stance, CDST research fails to observe three fundamental…

Willingness to communicate in a second language (L2 WTC) is a speaker's voluntary engagement in communication using a target language. WTC has undergone several conceptualisations over the past twenty years or so. The aim of the current article is to present a narrative review of the major conceptual developments in research on L2 WTC. First, the…

This book takes a fresh look at both context and the language learner in an attempt to shed light on the holistic and ever-changing system of the contemporary L2 speaker's language development. Drawing on complex dynamic systems theory as a means to more fully understand the holistic nature of contemporary language learning, the author attempts to…

This paper responds to "Exploring the dynamism between propositional complexity and error rate: a case study" (EJ1176705) by Jordan Van Horn (this issue). In her study, Jordan Van Horn analyzes asynchronous email exchanges between a native and nonnative speaker of English utilizing three methods of analysis: error analysis, complexity…

There is much research in the scholarly literature about using technology to support language learning, and particularly English as a Foreign Language, but the technology is rarely integrated into the curriculum, largely because the research is the product of the pressure on faculty to publish. The author explores curriculum integration, based on…

This article explores the potential offered by complexity theories for understanding language learners' sense of self and attempts to show how the self might usefully be conceived of as a complex dynamic system. Rather than presenting empirical findings, the article discusses existent research on the self and aims at outlining a conceptual…

Language teacher cognition research is a growing field. In recent years several features of language teacher cognitions have been noted: they can be complex, ranging over a number of different subjects; they can be dynamic, changing over time and under different influences; and they can be systems, forming unified and cohesive personal or…

An approach that uses diagrams to illustrate systems of influence is described and proposed as a medium for cross-cultural communication. The approach, entitled System Dynamics, facilitates representation of complex interactions, and has been used in a variety of scientific and professional fields since its inception in the 1950's. Influence…