In the United States, the second leading cause of neonatal mortality is __________, which is largely preventable

Rovee-Collier and her colleagues (1993) tied one end of a ribbon to a brightly colored mobile and tied the other end ties to an infant's ankle. What did these studies measure?

a. Object permanence b. Habituation c. Memory d. The age of onset of primary circular reactions

Expectations by the experimenter that might influence the results of an experiment or their interpretation are called __________.

A. experimental blinds B. experimenter bias C. sample bias D. treatment bias