Is stacking objects a sign of autism?

No, stacking objects alone is not a definitive sign of autism. Autism is a complex neurodevelopmental disorder that involves a range of symptoms and behaviors, including challenges with social interaction, communication, and repetitive behaviors. Stacking objects may be a behavior seen in individuals with autism, but it is not a sole indicator of the disorder. It is important to consider a variety of factors and consult with a healthcare professional for a proper evaluation and diagnosis.