Organisms seem to learn the spatial layout of their environment by ________, even if they are not reinforced for learning particular paths

Which of the following characterizes the association between gender and internalizing disorders in adolescence?

a. more common in boys b. more common in girls c. in both genders, rates decrease with age d. Equally prevalent among boys and girls

Stem-cells are _________, meaning they have "many powers," generating many types of specialist cells, from neurons to kidney cells

a. pluripotent b. unipotent c. potentiated d. omnipotent