However, there is disagreement on whether there is indeed a sequence of play stages that children go through for example, whether toddlers are really unable to play cooperatively, and whether solitary play in older children is less common or a sign of immaturity.
12.
A prospective study found average differences across a range of developmental domains, including reaching milestones of motor development at a later age, having more speech problems, lower educational test results, solitary play preferences at ages four and six, and being more socially anxious at age 13.
