Have you ever seen recommendations for the books called Your One Year Old, Your Two Year Old, and so on, by Louise Bates Ames? Every few weeks I see parents posting in online communities asking about some aspect of their child’s behavior that is confusing or annoying to them, and somebody responds: “You should read the Louise Bates Ames books!” This usually comes with the caveat that the reader will have to disregard all the 'outdated gender stuff,' but that the information on child development is still highly relevant. In this episode I dig deep into the research on which these books are based. While the books were mostly published in the 1980s, they're based on research done in the 1930s to 1950s. I argue that far from just 'stripping out the outdated gender stuff,' we need to look much deeper at the cultural context that the information in these books fits within - because it turns out that not only were the researchers not measuring 'normal,' 'average' child development, but that they were training children to respond to situations in a certain way, based on ideas about a person's role in society that may not fit with our views at all. And if this is the case, why should we use these books as a guide to our children's development?