Forty studies that changed psychology explorations into the history of psychological research is an academic textbook written by roger r hock that is currently in its eighth edition the book provides summaries critiques and updates on important research that has impacted the field of psychology the textbook is used in psychology courses at all levels of education and has been translated into six languages it is used to properly relate the present knowledge of psychology with the original. Forty studies that help shape psychology roger hocks forty studies provides a glimpse of the science of psychology unraveling the complexities of human nature this book provides a more in depth look and analyses that cannot be found by reading a textbook or research alone it has the original studies research analysis about the most famous studies in psychological history. Forty studies that changed psychology first published 25 years ago remains one of the fields most comprehensive introductory texts in exploring the most commonly cited studies forty studies guides students through both the history of psychology and the diverse disciplines that comprise the field. Forty studies that changed psychology roger r hock 2005 human development discovering love harlow hf 1958 the nature of love the nature of love american psychologist 13 673 685. Inproceedingshock1992fortyst titleforty studies that changed psychology explorations into the history of psychological research authorroger r hock year1992 roger r hock published 1992 psychology 1 biology and human behavior one brain or two gazzaniga m s 1967 the split