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Part of
Instructed Second Language Acquisition Research Methods
Edited by Laura Gurzynski-Weiss and YouJin Kim
[Research Methods in Applied Linguistics 3] 2022
► pp. 329–352

Chapter 14
Speaking

Complexity, accuracy, fluency, and functional adequacy (CAFFA)

 | University of Amsterdam
 | University of Amsterdam
This chapter focuses on the assessment of oral performance in a second language (L2), viewed from the perspective of task-based language assessment and instructed second language acquisition. The notion of L2 proficiency, as presented in the Common European Framework of References (Council of Europe, 2001), rests on two pillars that have to be taken into account when measuring L2 speaking: (1) the linguistic dimension, referring to the complexity, accuracy, and fluency (CAF) of the speaker’s utterances; and (2) the communicative dimension, concerning the appropriateness and effectiveness of the message to be conveyed, labeled functional adequacy (FA). Whereas the majority of studies on the assessment of learner performance have focused on CAF, little attention has been devoted to the functional aspects of L2 performance. The rationale underlying the present chapter is that assessing L2 speaking is impossible without considering both CAF and FA (henceforth, CAFFA) and the mutual relationship between the two constructs. It is argued that L2 speaking should not only be assessed by measures along the CAF-triad but also in terms of FA. The chapter discusses the theoretical underpinnings and applicability of a rating scale for FA (Kuiken & Vedder, 2017, 2018).
Keywords: L2 speaking, CAF (complexity, accuracy, fluency), FA (functional adequacy), CAFFA, rating scale
Article outline
  • 1.What is CAFFA and why is it important?
    • 1.1Levelt’s model of speech production
  • 2.What we know and what we need to know about CAFFA in ISLA
    • 2.1CAFFA: Definition of constructs and operationalizations
    • 2.2CAFFA: Studies on the assessment of oral performance
  • 3.Data elicitation and interpretation
    • 3.1Guidelines for conducting CAFFA research
    • 3.2The WISP project
    • 3.3Development of a rating scale for FA
  • 4.Advice to future CAFFA researchers
    • 4.1Type of research
    • 4.2Target and source languages
    • 4.3Measures
    • 4.4Task type
    • 4.5Rater training
  • 5.Troubleshooting CAFFA research in ISLA
    • 5.1L1 and L2 speakers in one and the same study
    • 5.2Rater variables
    • 5.3Scale adaptations
  • 6.Conclusions
  • 7.Further reading and additional resources
    • 7.1Books and journal articles
    • 7.2Journals, professional organizations, and websites
  • References
Published online: 8 December 2022
DOI logo
https://doi.org/10.1075/rmal.3.14kui
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