ISBN-13: 9782881243172 / Angielski / Twarda / 1989 / 355 str.
In this book, J.P.Scott combines genetic theories of evolution, systems theory, and theories of behavioural evolution to explain the evolution of social behaviour and organization. He proposes that caregiving has evolved from self care, to care of fertilized eggs, to developing embryos, to hatchings. Care may then be extended to adult offspring, collateral relatives and to unrelated others.