object permanence → object constancy
children and adults → people [if replacing "children and adults", but perhaps more accurately young and adults – but the user might want to keep the age groups. Maybe leave as is, but if replacing "children and adults", perhaps young but that would change the term. Hmm, perhaps the user wants each term in the original text to be replaced if possible. If "children and adults" is a term, maybe replace with people] object permanence → object constancy children and adults
Alternatively, the user may want the entire term replaced. But "Sensorimotor Development" is a specific term, so synonyms might be limited. Maybe "Perceptual-Motor Advancement" or "Early Sensory-Motor Progress," but I'm not sure. Since the user wants three synonyms, but "Sensorimotor Development" is a fixed term, perhaps "Sensorimotor Development" can't be replaced. Therefore, maybe only parts of it can be changed if they are not fixed. This might be tricky. Let me check the example provided. If "children and adults" is a term, maybe
Wait, looking back at the user's instructions: they said to switch each term with 3 synonyms as spintax w1, no changes to proper nouns. So "Cognitive Development" is a section title and should stay. The same for book titles like "Developmental Psychology." Since the user wants three synonyms, but "Sensorimotor
Cognitive Development One of the key areas of focus in “Developmental Psychology” is cognitive development, which refers to the process by which children and adults acquire, process, and utilize information. Hurlock discusses the major milestones in cognitive development, including:
process → methodology