Allen Goodwin & Paul Richardson 
Research Methods and Design in Psychology [PDF ebook] 

This accessible introductory text addresses the core knowledge domain of research methods. It provides concise coverage of the central concepts, techniques, problems and debates in this key area, while encouraging a critical approach and developing students’ higher level skills. Activities help readers build the underpinning generic critical thinking and transferable skills they need in order to become independent learners, and to meet the relevant requirements of their programme of study. The text provides core information on designing psychology research studies with key chapters on both quantitative and qualitative designs. Other chapters look at ethics, common problems, and advances and innovations.