Sumários

Mediation Analysis: From Conceptual Foundations to Statistical Implementation

21 Maio 2026, 14:00 • Susana Batel

Conducting a Mediation Analysis

• Methods for testing indirect effects 

• Comparing different approaches

• Training with real data using Jamovi

Reporting Mediation Analysis

Mediation Analysis: From Conceptual Foundations to Statistical Implementation

21 Maio 2026, 10:00 • Susana Batel

Introduction to Mediation Analysis

  • Conceptual foundations
  • Mediation vs. Moderation
  • The basic mediation model
  • Total, direct, and indirect effects

Planning a Mediation Analysis

  • Establishing temporal precedence
  • Selecting plausible mediators
  • Consider Confounding Variables
  • Plan for adequate statistical power
  • Plan for adequate statistical Power
  • Preregister analysis plans

Class 2: Modern R: The World of Tidyverse and Rmarkdown

26 Março 2026, 14:00 • Oleksandr Horchak

The 5-step data analysis workflow, from loading packages to reporting
The key tidyverse packages (readr, tibble, dplyr, magrittr, ggplot2)
A function reference table for all the dplyr commands covered (filter, select, rename, arrange, mutate, group_by/summarise)
Pipe operator, wide vs long format data, how to run common statistical tests

Modern R: The World of Tidyverse and Rmarkdown

20 Março 2026, 14:00 • Oleksandr Horchak

The object state experiment, the 4-step pre-processing pipeline, descriptive stats, ggplot2 layers, 10 chart types with guidance on when to use each, repeated-measures ANOVA with aov_ez(), and post-hoc testing with emmeans

Class1: Modern R: The World of Tidyverse and Rmarkdown

19 Março 2026, 14:00 • Oleksandr Horchak

Introduction to R and RStudio for data analysis. Topics covered: comparison of R with Excel and SPSS; the concept of reproducible analysis; R scripts vs RMarkdown; basic R operations (variables, vectors, data types, data frames). Practical session: students created their first RMarkdown document, practised variable assignment, numeric and character vectors, factors, and basic descriptive statistics.