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…

This complex article has six subsections. Following a brief introduction, one team of three co-authors and three single authors present compact statements of their distinctive individual research perspectives on second language acquisition and teaching (SLA/T): Atkinson, Mejía-Laguna, and Ribeiro offer a sociocognitive perspective; Cappellini…

Research into second language acquisition (SLA) has shown that individual difference (ID) variables can be strong predictors of language achievement (e.g., Dornyei, 2003; Skehan, 2003). Traditionally, this research conceptualized ID variables as static and monolithic variables (e.g., Dornyei, 2010). More recently scholars have questioned this…

Complex Dynamic Systems Theory (CDST) has significantly reshaped our understanding of second language learning and teaching across the micro, meso, and macro levels for several decades since its systematic introduction by Larsen-Freeman and Cameron (2008). This study conducts a comprehensive review of empirical research on second language learning…

Humanizing complexity research is already strongly advocated by much of the literature on complexity (Kramsch, 2011; Larsen-Freeman, 2011; Sampson, 2016) and yet there is a recent trend towards a potentially alienating approach, which could confound readers, utilising a dense vocabulary and overly technical methods. We advocate a more practical…

"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…

Network analysis is a method used to explore the structural relationships between people or organizations, and more recently between psychological constructs. Network analysis is a novel technique that can be used to model psychological constructs that influence language learning as complex systems, with longitudinal data, or cross-sectional data.…

The number of immigrant students in Finland is increasing; thus, this qualitative case study investigates ways of providing targeted support measures for recently arrived Finnish language learners (RAFLLs) in Finnish lower secondary education. Focusing on linguistic responsiveness, the teaching arrangements and support measures are examined not…

The purpose of this mixed methods study was to understand how context may shape multiple goal negotiation. Prior research has focused on identifying variables that influence goal pursuit in general, but little attention has been given to how these principles operate in different circumstances. This study adopted the Dynamic Systems Model of…

Learner motivation is an essential ingredient for successful language learning. This article investigates the motivating and demotivating factors affecting the motivation of fifty-eight EAP learners' L2 learning. Guided by complex dynamic systems theory, with a dual focus on both what factors are important and what role these play in the L2…

Background/purpose: Although studies on teacher research are becoming more common in English language teaching (ELT), there is still a lack of understanding regarding how university lecturers shape their research identities. Using Ecological systems theory and Self-determination theory, this study examines the construction of research identities…