Your #1 resource for carrying out educational research as part of postgraduate study.High-quality educational research requires careful consideration of every aspect of the process. This all-encompassing textbook written by leading international experts gives you a considered overview of the principles that underpin research, and key qualitative, quantitative and mixed methods for research design, data collection and analysis.This fourth edition includes four new chapters on: Doing a literature review Measurement and validity Using R (with RStudio & Tidyverse) Data transparency, reproducibility, and replicabilityIn addition, across the book, authors touch on the emergent use of generative AI tools as part of the educational research process. Also, chapters have been reordered to better reflect the research process and to emphasise commonalities between methodological approaches and tools.This is essential reading for postgraduate students on education courses and early career researchers looking to sharpen their research practice.