I am looking for a particular kind of parenting book.
The focus should be on newborn to pre-school. The book would offer parenting advice grounded in scientific studies.
For example, there is a study called the Marshmallow test citing how kids that are able to defer gratification achieve higher SAT scores. Granted the study is only tangentially related to parenting as I could not find a better study, but my goal is to find a book that ties long-term behavior, personality, or cognitive development to parenting strategies or childhood behavior.
To get specific, off the top of my head studies that help to answer: where the child sleeps and impact on personality, breast-milk or formula, how to improve language acquisition, discipline strategies and personality development, music exposure, etc. would be very interesting. (For what it's worth, I'm trying to find a book as a gift for a friend of mine that is scientifically minded and about to have her first child.)
This question may be better suited as a community wiki since there may not be a single right answer.