Balancing readability with intellectual rigor, this is an essential guide to understanding the complex relationship between psychology, science, and pseudoscience. At a time when unempirical data and evidence is increasingly purported as justification for scientific claims in the public consciousness, Hughes considers its impact upon the very philosophy behind the scientific principles behind the methods that produce research findings. Further, he examines the controversial research practices and biases in the psychological field that threaten the integrity of its claims. This book undertakes a fascinating contemplation and sagacious analysis of the historical and contemporary debates regarding psychological methods and research. Written to suit 3rd year undergraduate students and MA/MSc students in psychology as well as academics and the more general reader interested in these subject issues.