The psychologist James J. Gibson (1904Gibson ( -1979) developed a theory of perception according to which the properties of animals' perceptual experience can be explained by the animal's active sampling of information in structured energy (Gibson 1979). Since these patterns in energy-patterns in light, in sound waves, etc.-are caused by objective features of the world, then it would seem reasonable to conclude, as Gibson did, that by picking up these patterns, our perceptual systems give us direct epistemic access to the structure of the world itself. It is an appealing story. However, if Gibson's theory is true-if, that is, we are all in direct epistemic contact with the same world-then some perplexing questions follow. For one: how can we account for individual differences in subjective experience? How can we account for the fact that different individual people, when looking at the same environmental situation, can have very different emotional experiences from one another? This is the question that Rob Withagen aims to address in this concise book.In Withagen's estimation, individual differences in emotional experience pose a severe challenge to Gibson's account of direct perception. Withagen writes, "The fact that a certain incident (e.g., a critical audience or an angry yelling man) can make one person scared or angry but leaves another person relatively untouched seems to imply that at least one of them was misperceiving the environment" (Withagen 2022, 5). In another example Withagen asks us to imagine "a person with a spider phobia living in the Netherlands, a country that is safe, at least when it comes to spiders. Yet each and every encounter prompts an intense fear reaction in this person" (Withagen 2022, 93).Withagen proposes that, given the existence of such individual differences in emotional experience, it will be necessary to rethink Gibson's theory in some fundamental ways in order to rescue it. The first two chapters of the book are historical, covering the Cartesian perceptual theory and introducing Gibson's ecological approach as a response to it. In chapter 3, Withagen turns to the alleged shortcomings of Gibson's theory. Gibson is accused of having a "severe tendency to objectify the environment" (Withagen 2022, 46), which causes him to overlook the emotional aspects of perception. In the remaining chapters, Withagen proposes that a revised, affective Gibsonian psychology will pay greater attention to developmental processes (chapter 4) as well as to psychotherapeutic practices (chapter 5), and that ultimately Gibson's program can best be rescued by embedding it within the developmental systems program in biology (chapter 6).At the center of Withagen's argument is the aforementioned issue of individual differences in emotional experience. To account for why individual differences might exist, in our emotional engagement with the world, Withagen appeals, in chapter 4, to the work of the Freudian psychoanalyst Alice Miller . Miller's work focused on how traumatic events experienced in childh...