A behavioral psychologist is most likely to fall on the "nature" side of the nature vs. nurture debate

In class, Dr. Heyman showed a video in which:

a. a monkey could learn to hand an experimenter grapes or a carrot based on the English verbal instructions of the experimenter b. an experimenter broke a graham cracker in half and a girl agreed that it was fair for one person to have two halves of a single graham cracker and for another person to have two whole graham crackers c. an experimenter showed children a box with different numbers of white and red marbles and asked children to guess whether the next marble picked from the box was more likely to be red or white d. a boy was asked to guess the age of several different people and guessed that a young adult was 100 years old

Proactive interference of long-term memory means ___________

a. new material interferes with memory of old material b. new material has suppressed short-term memories c. old material interferes with memory of new material d. old material has eliminated memories of new material