Sumários

Modern R: The World of Tydiverse and R Markdown

27 Março 2025, 14:00 • Oleksandr Horchak

Preparation

To get the most out of this seminar it is recommended to:
· Bring a personal laptop to the class.
· Install R and RStudio prior to the seminar. - Instructions to install R and R Studio: https://rstudio-education.github.io/hopr/starting.html#how-to-download-and-install-r - Download link: https://posit.co/download/rstudio-desktop/
· Have access to the internet during the class (e.g., eduroam wifi at Iscte).

Contents

Class 3: Tidyverse: A modern way of doing R
1. Plotting with ggplot2: histograms, box plots, scatter plots, bar graphs
2. Data analysis 1: correlation, t-test, ANOVA
3. Data analysis 2 (if time is left): a very basic introduction to linear mixed modeling

Modern R: The World of Tydiverse and R Markdown

21 Março 2025, 14:00 • Oleksandr Horchak

Preparation

To get the most out of this seminar it is recommended to:
· Bring a personal laptop to the class.
· Install R and RStudio prior to the seminar. - Instructions to install R and R Studio: https://rstudio-education.github.io/hopr/starting.html#how-to-download-and-install-r - Download link: https://posit.co/download/rstudio-desktop/
· Have access to the internet during the class (e.g., eduroam wifi at Iscte).

Contents

Class 2: Tidyverse: A modern way of doing R
1. Base R vs Tidyverse
2. Installing and loading R packages
3. Tidyverse packages: tibble, readr, dplyr, magritt, ggplot2
4. Loading and inspecting data
5. Transforming variables
6. Pre-processing data: select, rename, filter, arrange, pipe, and mutate functions.
7. Data in long vs wide format
8. Descriptive statistics

Modern R: The World of Tidyverse and Rmarkdown

20 Março 2025, 14:00 • Oleksandr Horchak

Preparation

To get the most out of this seminar it is recommended to:
· Bring a personal laptop to the class.
· Install R and RStudio prior to the seminar. - Instructions to install R and R Studio: https://rstudio-education.github.io/hopr/starting.html#how-to-download-and-install-r - Download link: https://posit.co/download/rstudio-desktop/
· Have access to the internet during the class (e.g., eduroam wifi at Iscte).

Contents

Class 1: Introduction to R
1. Baby steps with R: Simple calculations
2. R Markdown vs R Scripts
3. Assigning variables
4. Vector types: numeric, logical, character, and factor
5. Data frames
6. Useful keyboard shortcuts
7. Reproducible research: sharing HTML reports of your analyses

Mediation Analysis: From Conceptual Foundations to Statistical Implementation

21 Fevereiro 2025, 10:00 • Tomás Alexandre Campaniço Palma

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

Mediation Analysis: From Conceptual Foundations to Statistical Implementation

20 Fevereiro 2025, 10:00 • Tomás Alexandre Campaniço Palma

Conducting a Mediation Analysis

• Methods for testing indirect effects 

• Comparing different approaches

• Training with real data using Jamovi

Reporting Mediation Analysis