This textbook is great overall. It has a wide range of subjects from cognition across cultures to how cultures systematize psychopathologies and their associated treatments. It is well written and balances the naturalist and social constructionist approaches fairly well throughout the text however, the lean of the author does come into play at some points with some chapters omitting sections pertaining to the naturalists entirely.
However, there is one section in this book that irks me most particularly. There is a section on Sexual Identity where the main, and possibly the only, scientific reference used when claiming sex is a spectrum, a non-dichotomous variable, is the United Nations sector for LGBTQ rights and equality. Which as far as I am concerned is not an objective and scientific organization being used as a reference for a scientific textbook. A claim such as this, with the references used, is nothing but a political appeal.