Problem-solving is creative — your baby uses tools, pulls blankets to bring objects closer, and pushes things to knock other items into reach. Imitation is sophisticated: they can replicate novel actions they've never seen before. They're developing strong preferences — a favorite cup, a specific blanket, one book they want read fifteen times in a row.
Separation anxiety may still be strong or starting to ease. According to Zero to Three, the peak is typically 8–14 months. Your baby has figured out what makes you laugh and will do it on purpose — purposeful humor that shows social awareness and timing. They understand social dynamics: who's in charge, who's a peer, who's a stranger.
First words may appear — "mama," "dada," "ball," "no." Pointing is a superpower for communication. According to the CDC, pointing to ask for something is expected by 12 months. They can follow simple commands, even if compliance is optional. Communicative frustration may increase as the gap between understanding and expression widens.