I would like to know if there is any scientific literature on the detailed developmental milestones in different domains(cognitive, language etc.,) that a child of a given age is supposed to reach.
A couple of e.g.,
The child does not feel the need to resist/communicate when a unknown person takes his belongings before him. I would like to understand the reason behind this, it could be that he does not have a sense of ownership over his belongings, or he is not paying enough attention to what is happening around him or it could be that he does not know how to react to that situation.
The child does not give correct answers to questions on what happened in the past e.g., what did you eat for breakfast? The reason could be that he does not understand the question, or he is not able to recollect what he was eating may be because he was not paying enough attention or his abstract thinking ability is not mature enough.
The reasons that I discussed for the above observations are purely based on my understanding of his condition(and therefore could be wrong) and not based on any scientific evidence. I would like to know if there is literature which could throw light on each such small milestone(for lack of a better word) that a child of a given age is supposed to reach and the prerequisites understanding he should have for reaching there. These subtle behaviors are usually not mentioned in milestone charts available with a pediatrician.