Reliability Analysis with Jamovi: Scale Testing Fundamentals

Evaluating whether survey scales and test questionnaires measure constructs consistently is a critical step in modern research and data analysis. This text-based guide teaches you how to conduct thorough reliability analysis using Jamovi, an intuitive open-source statistical tool. You will understand the statistical principles behind internal consistency and gain practical experience checking scale quality, interpreting key metrics, and refining measurement instruments for academic or industry research. What you'll learn: - Understand core psychometric definitions, internal consistency concepts, and measurement error fundamentals - Compute and evaluate classical metrics like Cronbach's alpha alongside modern robust alternatives like McDonald's omega - Analyze item-rest correlations and identify reverse-scored items that affect scale stability - Interpret item-dropped statistics to determine which survey questions strengthen or weaken scale reliability - Format and document statistical findings clearly for reports and research publications The course begins with foundational statistical definitions before walking you through data preparation, metric calculation, and practical interpretation workflows. This guide is designed for beginners, students, and researchers with no prior background in statistical software. Start reading today to master reliable scale evaluation in Jamovi.