From toddlerhood through middle childhood, the development of math skills follows a path parallel to the development of ____ and ____

Billy has just returned home from visiting his

grandparents. His grandfather always had a jar of jelly beans on the table, and his mother asked Billy about the jar. "Sure," says Billy, "it was right there where it always was." Billy's mother knew that the jar was gone. The grandfather had recently been diagnosed with diabetes and had cut down on his sugar intake. Why did Billy remember seeing the jar of jelly beans? A) He probably has a damaged hippocampus. B) He was using the representativeness heuristic. C) Too much time had passed between the visit and the conversation with his mother. D) He reconstructed his memory using new and old information.

From research on emotions in the self-concept of individuals during late adulthood, descriptors such as "cheerful", "calm and peaceful", and "in good spirits" describe _____

a. positive emotions b. negative emotions c. desirable emotions d. undesirable emotions