Known for its coverage of both classic and current studies of animal and human research, Principles and Applications shows students the relevance of basic learning processes through real-world examples, vignettes, applications, and critical thinking questions. This new Sixth Edition represents a thorough update and reorganization of content to reflect changes in the field, as well as a strengthening of key pedagogical features to help students’ understanding of the material.
A very good survey analysis of learning theories in human and non-human animals. LP&A is deceptively short at 400 pages of material in the 7th edition, but was probably one of the densest textbooks I've worked with and this is more a reflection of Klein than the material. There's a lot of graphs, references to hundreds of experiments and lots and lots of jargon (which you get used to).
It's certainly very comprehensive, more so than any other textbook I've seen – Klein earns 3 stars for that. I do hope there's more of an effort to make working through it less dry in the next edition (though with the pitch of "An easy-to-read overview of basic learning processes." on the cover, I somehow doubt it).