TEY can be defined by its purposeful design, with experiences carefully crafted especially for babies and their adult companions; this may mean attending to practical issues such as seating layout and minimising blackouts,[24] employing knowledge from developmental psychology, neuroscience and cognitive science to tailor productions to the capabilities of a tightly-prescribed audience (such as the pre-verbal but mobile stage between 12 and 18 months),[25] or embracing political frameworks inspired by Article 31 of the United Nations Convention on the Rights of the Child.[26]