A Signal Line Crossover is the most common signal produced by the MACD. First one must consider that the Signal Line is essentially an indicator of an indicator. The Signal Line is calculating the Moving Average of the MACD Line. Therefore the Signal Line lags behind the MACD line.
Autism, PDD-NOS & Asperger's fact sheets | A guide to classification and diagnosis of Autism and Asperger's syndrome. The classification and diagnosis of autism, Aspergers syndrome and other related disorders is constantly changing, and is increasingly the subject of much discussion and dispute.
Today, Asperger's syndrome is technically no longer a diagnosis on it's own. It is now part of a broader category called autism spectrum disorder (ASD). This group of related mental health issues shares some symptoms. Even so, lots of people still use the term Asperger's. The condition is what doctors call a high-functioning type of ASD. This means the symptoms are less severe than other kinds of autism spectrum disorders. The DSM-5 also includes a new diagnosis, called social pragmatic communication disorder, which has some symptoms that overlap with Asperger's.