Parents are sometimes confused and fearfully ask me this question after some professionals commented their child lining up cars. To some, it may be a surprise to know that lining up toys is a common and quite normal developmental stage. However, when this developmental phase does not progress and remain stagnant, and becomes the only theme that a child frequently or only is able to interact with his toys, then, it is likely a reflection that the brain is unable to progress to the next, more sophisticated stage.

Yes, lining up objects in a child’s may could be a red flag; however, it has to be considered in the overall picture of the child’s development.