Viechtbauer, W. (2023). Autocorrelation over nights in ESM data. ESM Working Group, Maastricht University, The Netherlands.
Viechtbauer, W. (2023). A brief demo of the metafor package. Symposium on 'Recent Advances in Meta-Analysis: Methods and Software', Department of Medical Statistics, University Medical Center Göttingen, Germany. slides
Viechtbauer, W. (2023). Confidence intervals for the amount of heterogeneity accounted for in meta-regression models.European Congress of Methodology, Ghent, Belgium. slidesR code
Viechtbauer, W. (2023). Some reflections on analyzing data from event-contingent designs in ESM/EMA. ESM Working Group, Open University, Heerlen, The Netherlands.
Viechtbauer, W. (2021). A general workflow for complex meta-analyses with dependent effect sizes. International Workshop on 'Exploring the limits of advanced meta-analysis', Department of Statistics, TU Dortmund University, Online. slides
Viechtbauer, W. (2021). Median-unbiased estimators for the amount of heterogeneity in meta-analysis.European Congress of Methodology, Valencia, Spain. slides
Viechtbauer, W. (2021). Selection models for publication bias in meta-analysis. Methods in Meta-Analysis Meeting, Online. slides
Viechtbauer, W. (2021). Current methods for meta-analysis with dependent estimates.Centre for Evidence-Based Intervention, Department of Social Policy and Intervention, Oxford University. slidesR code
Viechtbauer, W. (2020). Selection models for publication bias in meta-analysis. Methodology and Statistics Colloquium, Tilburg University. slides
Viechtbauer, W. (2020). Automated report generation for meta-analyses using the R package metafor. Evidence Synthesis Technology Webinar, Environmental Evidence Summit, Collaboration for Environmental Evidence. slides
Viechtbauer, W. (2020). An introduction to network meta-analysis / mixed-treatment comparisons. Maastricht ISPOR Student Chapter, Maastricht, The Netherlands.
Viechtbauer, W. (2019). Workshop on ecological momentary assessment data analysis. Symposium on longitudinal data-analysis, Experimental Psychopathology Post-Graduate School, Heeze, The Netherlands.
Viechtbauer, W. (2019). Bimodality of the likelihood function of the random-effects model in meta-analysis. Annual Meeting of the Society for Research Synthesis Methodology, Chicago, IL. slides
Viechtbauer, W. (2019). Changes in response behavior over time in ESM studies: Is there reason for concern? 6th Biennial Conference of the Society for Ambulatory Assessment, Syracuse, NY. slides
Viechtbauer, W. (2019). Research synthesis with R: From simple models to multilevel, multivariate, and network meta-analyses.ITEC Research Group, KU Leuven, Belgium. slides
Viechtbauer, W. (2019). An introduction to longitudinal meta-analysis in R with the metafor package.Lifespan Social-Personality Preconference, Society for Personality and Social Psychology (SPSP) Annual Convention, Portland, OR. slides
Viechtbauer, W. (2017). Reliability of ESM assessments of mood and mood sensitivity. 5th Biennial Conference of the Society for Ambulatory Assessment, University of Luxembourg. slides.
Viechtbauer, W. (2017). From Pearson to phylogenetic meta-analysis: An overview of 110 years of developments in research synthesis methodology. Seminar talk at the Department of Biology, University of Mississippi.
Viechtbauer, W. (2016). An introduction to meta-analysis: History, methods, misconceptions, and recent developments. Colloquium talk at the Department of Psychology, University of Basel, Switzerland. slides
Viechtbauer, W. (2016). Alternative weighting schemes in the random-effects model to reduce the impact of publication bias. Annual Meeting of the Society for Research Synthesis Methodology, Florence, Italy. slides
Viechtbauer, W. (2016). Multilevel, multivariate, and network meta-analytical models for complex evidence synthesis.Department of Methodology and Statistics, Maastricht University, The Netherlands.
Viechtbauer, W. (2015). Methods for random‐effects model meta-analyses with inclusion of small studies. Meeting of the Statistical Methods Group, Cochrane Colloquium, Vienna, Austria.
Viechtbauer, W. (2015). Meta‐analysis with correlation coefficients when one or both variables have been artificially dichotomized. Annual Meeting of the Society for Research Synthesis Methodology, Nashville, Tennessee.
Viechtbauer, W. (2014). Meta-analysis of product-moment, tetrachoric, and biserial correlations.European Congress of Methodology, Utrecht, The Netherlands.
Viechtbauer, W. (2012). The arm-based model as an alternative to the standard (contrast-based) approach when meta-analyzing treatment and intervention effects.European Congress of Methodology, Santiago de Compostela, Spain.
Viechtbauer, W. (2012). Many roads lead to Rome: The standard, the multilevel, and the bivariate meta-analysis model. Annual Meeting of the Society for Research Synthesis Methodology, Aix-en-Provence, France.
Viechtbauer, W. (2009). Outlier and influential case diagnostics for meta-analysis. Annual Meeting of the Society for Research Synthesis Methodology, Seattle, Washington.
Viechtbauer, W. (2008). A second look at fixed- and random-effects models in meta-analysis: Does the fixed-effects model really assume homogeneous effect sizes? Annual Meeting of the Society for Research Synthesis Methodology, Corfu, Greece.
Viechtbauer, W. (2008). Exact confidence intervals for measures of heterogeneity in meta-analysis. Seminar on Measuring Heterogeneity in Meta-Analysis, University of Reading, UK.
Viechtbauer, W. (2007). Outlier detection in meta-analysis via studentized deleted residuals. Annual Campbell Colloquium, London, UK.
Viechtbauer, W. (2007). Improved estimation of the sampling variances in meta-analysis via iterative model fitting. Congress on Methodology in the Health and Social Sciences, Barcelona, Spain.
Viechtbauer, W. (2006). Publication bias and meta-analysis. Annual Meeting of the Care and Public Health Research Institute, Maastricht University, The Netherlands.
Viechtbauer, W. (2005). A call for moderator analysis via the mixed-effects model in meta-analysis.Joint Statistical Meeting, Minneapolis, Minnesota.
Viechtbauer, W. (2005). Confidence intervals for the amount of heterogeneity in meta-analytic random- and mixed-effects models.Annual Meeting of the Psychometric Society, Tilburg, The Netherlands.
Viechtbauer, W. (2005). Estimating, testing, and obtaining confidence intervals for (the amount of) heterogeneity in meta-analysis. Spanish Conference on Biometrics, Oviedo, Spain.