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The Emergence of Autism Symptoms Prior to 18 Months of Age: A Systematic Literature Review
Amy Tanner & Katerina Dounavi Although various Autism Spectrum Disorder (ASD) signs can be detected between 6 and 18 months of age, the majority of children who later on receive an ASD diagnosis do so at the age of 4 years old or older (Centre for Disease Control, 2019). The identification of very early symptoms…