Because taking a drug reduces withdrawal symptoms, taking the drug is

Tyler, a 5-year-old with ASD, has a fascination with anything to do with trains and if allowed to would spend hours lining up his trains in his room. This is an example of what characteristic of ASD?

a. purposeless behaviors b. social anxiety c. genetic predisposition d. restricted and repetitive behaviors

In the developmental systems approach,

A. the timing of a particular event will not impact development. B. the timing of a particular event can influence substantially what effect that event will have on development. C. only comedians fully understand timing. D. development will not impact timing.