Mini-series on 'New statistical approaches and research practices for bilingualism research' in *Bilingualism: Language and Cognition* ------------------------------------------------ ---------- **0. BLC mini-series: New statistical approaches and research practices for bilingualism research** *João Veríssimo* Published online: https://doi.org/grn9 - Editorial introduction to the mini-series ---------- **1. Towards a credibility revolution in bilingualism research: Open data and materials as stepping stones to more reproducible and replicable research** *Cylcia Bolibaugh, Norbert Vanek, & Emma Marsden* Published online: https://doi.org/gmnttm - Overcoming the crisis of confidence in bilingualism research with open practices - Open data and code as minimum standards for analytic/computational reproducibility - Open materials and protocols as minimum standards for replicability - Examples from bilingualism research ---------- **2. The benefits of preregistration for hypothesis-driven bilingualism research** *Daniela Mertzen, Sol Lago, & Shravan Vasishth* Published online: https://doi.org/gkq622 OSF: https://osf.io/5ab7d/ - Practical example of the benefits of preregistration in psycholinguistics - Advantages of preregistration for bilingualism research - Preregistration is a tool to distinguish confirmatory from exploratory hypothesis testing - Preregistration prevents researcher degrees of freedom and promotes transparency in science ---------- **3. Power considerations in bilingualism research: Time to step up our game** *Marc Brysbaert* Published online: https://doi.org/ghn3f4 OSF: https://osf.io/t7f2n/ - Typical effect sizes in psychology research, including research on bilingualism - Implications of effect size and between-group designs for statistical power - Ideal number of participants and number of observations per condition ---------- **4. Applying meta-analysis to research on bilingualism: An introduction** *Luke Plonsky, Ekaterina Sudina, & Yuhang Hu* Published online: https://doi.org/ghwkx2 - Rationale for meta-analysis and its benefits over traditional literature reviews - Major stages, decision points, and challenges involved in conducting a meta-analysis - Illustration with examples from L2/bilingualism research ---------- **5. Nonlinearities in bilingual visual word recognition: An introduction to generalized additive modeling** *Koji Miwa & Harald Baayen* Published online: https://doi.org/gjhqdd OSF: https://osf.io/g5ax4/ - Modelling linear and non-linear effects with generalized additive mixed modeling (GAMM) - Nonlinear effects of trials in native speakers and L2 learners - Nonlinear interactions between continuous predictors (semantic similarity and word frequency) - The usefulness of quantile GAMMs to model the time course of lexical effects ---------- **6. Divergence point analyses of visual world data: Applications to bilingual research** *Kate Stone, Sol Lago, & Daniel Schad* Published online: https://doi.org/ghpwsb OSF: https://osf.io/exbmk/ - Importance of estimating the onset of experimental effects for evaluating accounts of L2 processing - Discussion and comparison of current approaches to timecourse analysis - A new bootstrapping procedure to estimate divergence points and their uncertainty - A practical example with L1-L2 visual world data, discussion of further applications to bilingualism ---------- **7. Analysis of rating scales: A pervasive problem in bilingualism research and a solution with Bayesian ordinal models** *João Veríssimo* Published online: https://doi.org/gtgn OSF: https://osf.io/grs8x/ - Ordinal data in bilingualism research (e.g., proficiency ratings, acceptability judgements) - The inappropriateness of linear analyses and their pervasiveness in bilingualism research - Example analyses with Bayesian ordinal models, with both categorical and continuous predictors