What did Lev Vygotsky call the level at which a child can almost, but not quite, understand or perform a task?

One of the advantages of the longitudinal design is that

a. the results can be generalized widely to various cohorts. b. data are not likely to be lost due to participant attrition. c. all participants have lived through the same socioeconomic period. d. researchers do not need to keep track of participants over extended time periods.

The branch of the autonomic nervous system that prepares the body for quick action in an emergency is the __________ division

a. central b. secondary c. sympathetic d. parasympathetic