“…Both features make GAMMs particularly suited to the analysis of intraindividual variability. GAMMs have recently begun emerging in psychological studies of intraindividual variability (for an example in the field of intelligence, see Perret & Dauvier, 2018; for other examples, see Baayen, Vasishth, Kliegl, & Bates, 2017; Le Vigouroux, Pavani, Dauvier, Kop, & Congard, 2017; McKeown & Sneddon, 2014). In the present study, GAMMs were used to systematically model the timecourse of accuracy, response time, constructive matching, and response elimination use throughout Raven’s APM; as allowed by this type of analysis, the shape of these timecourses—linear or not—was directly estimated from the data.…”