There were some pretty interesting facts, but I think the “very short introduction” format wasn’t right for me. I would have preferred merely “short,” or perhaps “medium.” Some of the claims included brief descriptions of studies to back up those claims, but many others were simply stated without argument. Without knowing the evidence backing up a statement, I don’t feel confident I have a precise understanding of the statement, let alone confidence the statement is well founded. This could have been mitigated by good citations. The book did include references, but without any link indicating which claims were supported by which references. Also many of the references were themselves secondary sources.
Reading this after The Nurture Assumption also gave me a good understanding of the methods The Nurture Assumption criticizes. Indeed, this book assumed without question that parenting has a huge effect on children’s outcomes, and relied heavily on correlational evidence without attempts to control for genetics. It also stated that “The environment experienced by the infant and child will have a far bigger impact on psychological development than genes.” It’s not clear in what sense this might be true or why Goswami believes it. For example, the big five personality traits are roughly 40-60% heritable.