{"product_id":"the-development-of-behavioral-states-the-expression-of-emotions-in-early-infancy-new-proposals-for-investigation-9780226905204","title":"The Development of Behavioral States  the","description":"\u003cb\u003eBook Synopsis\u003c\/b\u003e\u003cbr\u003ePeter H. Wolff, a world-renowned authority on infant behavior, helped lay the foundation for the field in the 1960s with his innovative studies of behavioral studies, motor coordination, smiling, and crying in infancy. Some twenty years later, as infancy studies have become increasingly specialized and fragmented, he calls for new theoretical perspectives and methods of investigation. Applying ethological methods used in field studies of animal behavior, Wolff first observes how babies behave in the natural ecology of their homes to catalog their species-typical behavioral repertory and then manipulates their behavior through informal experiments designed to examine functional significance. Wolff argues that a coherent psychobiological theory of early human development must begin with knowledge about the infant's behavioral repertory under free field conditions. Many current theories of human development begin instead with assumptions about the organization of behavior derived from stu","brand":"The University of Chicago Press","offers":[{"title":"Default Title","offer_id":51036767617367,"sku":"9780226905204","price":999.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0817\/1739\/5799\/files\/9780226905204.jpg?v=1750932510","url":"https:\/\/bookcurl.com\/products\/the-development-of-behavioral-states-the-expression-of-emotions-in-early-infancy-new-proposals-for-investigation-9780226905204","provider":"Book Curl","version":"1.0","type":"link"}