This online resource revists many of the fundamental principles of behavior change in order to deconstruct what it is we try to achieve in psychological therapies all of the conditions that impact people when seeking therapy are brought together in one cohesive framework assumptions of learning motivation approach and avoidance barriers to change personality dynamics and the way that . How and why people change foundations of psychological therapy is an ambitious book in which ian m evans attempts to present a unified account of behavior change as it pertains to psychotherapy by having a singular focus on how and why people change the book provides the space to do a thorough review and discussion. In how and why people change dr ian m evans revisits many of the fundamental principles of . How and why people change foundations of psychological therapyian m evans oxford university press 2013 isbn 9780199917273 volume 7 issue 2 kylie bailey nick higginbotham. How and why people change foundations of psychological therapy ian m evans author creator evans ian m 1944 publication new york oxford university press c2013 self influence social mediators and the therapeutic relationship culture as behavior change conclusions how and why people can change and be changed