As someone who leans more towards the anxious attachment side of the attachment theory spectrum, I think about how I am raising my 1 y.o. baby boy as the attachment styles can start appearing in as early as 9 month old babies (referring to the strange situation experiment).
For example, I never let my baby cry it out. He doesn't sleep through the night and we co-sleep. Is this a projection of my own neediness? Is my son learning to have anxious attachment?