Between 6 and 12 months, babies are more open to new foods — and new experiences — than they will be later on as toddlers, when a certain amount of “neophobia” or “new means no” is developmentally normal, Ms. Lipner said. “Normal kids transition through a normal pickiness phase,” around 18 months, she said, when “they’re also learning autonomy and control.”
Source: wiktionary