When Does Object Permanence Develop Jakob Leffler 16 Aug 2023 Object permanence (1 of 3) Object Permanence (1 of 3) - Stock Image - C028/0212 - Science Photo Object Permanence (1 of 3) - Stock Image - C028/0212 - Science Photo Check Details ← When Is A Slope 0 The Av Valves Close When →