Cross-cultural research has shown that older siblings serve as principal caregivers for infants and toddlers in _____ of the cultures studied

Lou is dying of cancer and he is very angry that his life "didn't work out the way it should have." In Erik Erikson's view, Lou's disappointment is best considered to be an example of:

a. mistrust b. guilt c. despair d. isolation

The success of the Sternberg task illustrates the usefulness of __________

a. free recall b. serial position curves c. chunking d. chronometric methods