How many hours of sleep do medical authorities recommend getting each night?

People tend to recall the events in a script more accurately if

a. they have not personally experienced the events described in the script. b. the script is first generalized into a schema. c. the script is identified at the beginning of the description. d. the script is not a prototype.

Which of the following would define the highest point in a child's zone of proximal development, according to Vygotsky?

a. The problem is too hard for the child to solve, even with help. b. The child can solve the problem with no help from anyone. c. The child can solve the problem, but only if someone helps with the solution. d. The child can solve the problem without help 50% of the time.