A) a range of physical, behavioral, motor, and cognitive abnormalities. B) abnormal functioning and the loss of previously acquired skills. C) significant cognitive or language delays associated with autism. D) social deficits and stereotyped behavior.
Cassandra and her mother have been playing patty-cake,but her mother is now trying to engage Cassandra in a picture book.Cassandra wants to play patty-cake again,so she grabs her mother's hands and puts them together as if in a clap.Cassandra is clearly in stage ____ of sensorimotor development.
Research on the results of laboratory and field experiments that examine the same variables suggests that:
A) the effect size of the independent variable on the dependent variable is very similar. B) the impact of the independent variable on the dependent variable is marked by dissimilarity. C) independent variables in field experiments must be manipulated differently from laboratory experiments. D) these experiments must be conducted in similar settings for the results to be complementary.