Infantile amnesia best explains why a. Justina, age 25, cannot remember hearing Japanese when she was 10. b. Ella, age 10, has no memories of her third birthday party c. Karla, age 3, can't understand why her new brother is crying d. Becka, age 2, is unable to remember where she left her doll. e. Hannah, age 6, can't remember the gymnastics routine she just learned.

As the infant's brain develops, some neural pathways will decay if not used. This use-it-or-lose-It process is known as a. motor development. b. pruning. c. heredity. d. amnesia. e. maturation.

As the infant’s brain develops, some neural pathways will decay if not used. This use-it-or-lose-it process is known as a. motor development. b. pruning. c. spacing. d. accommodation. e. maturation.

Studies done by Harry and Margaret Harlow found that a. nutrition was the most important factor in attachment. b. contact comfort was the most important factor in attachment. c. the surrogate mother's appearance was the most important attachment factor. d. monkeys were equally likely to become attached to either surrogate mother. e. the monkeys didn't form attachments to the surrogate mothers.

In an experiment to test the effects of room temperature on test performance the independent variable is a. the scores on the test be fore the experiment begins. b. the scores on the test at the end of the experiment. c. whether the teacher was male or female. d. the temperature of the room. e. the style of test (multiple choice versus essay).

Explain how the nature-nurture debate could be used to support each element of the biopsychosocial approach to explaining human behavior.

Which developmental issue best represents how our genes and environment interact? a. Habituation and maturation. b. Stability and change. c. Continuity and stability. d. Continuity and stages. e. Nature and nurture.

Three types of development are listed below. Give a specific example of each. • Brain development • Motor development • Infant memory

How could you tell if a patient suffering from anterograde amnesia was having failures of encoding, storage, or retrieval?

Airplanes and trains move through the earth’s magnetic field at rather high speeds, so it is reasonable to wonder whether this field can have a substantial effect on them. We shall use a typical value of 0.50 G for the earth’s field.

The French TGV train and the Japanese “bullet train” reach speeds of up to 180 mph moving on tracks about 1.5 m apart. At top speed moving perpendicular to the earth’s magnetic field, what potential difference is induced across the tracks as the wheels roll? Does this seem large enough to produce noticeable effects?

A Japanese strain of mice has a peculiar, uncoordinated gait called waltzing, which is due to a recessive allele, v. The dominant allele V causes mice to move in a coordinated fashion. A mouse geneticist has recently isolated another recessive mutation that causes uncoordinated movement. This mutation, called tango, could be an allele of the waltzing gene, or it could be a mutation in an entirely different gene. Propose a test to determine whether the waltzing and tango mutations are alleles, and if they are, propose symbols to denote them.

Assume that American rice sells for $\$ 100$ per bushel, Japanese rice sells for $16,000$ yen per bushel, and the nominal exchange rate is $80$ yen per dollar.

a. Explain how you could make a profit from this situation. What would be your profit per bushel of rice? If other people exploit the same opportunity, what would happen to the price of rice in Japan and the price of rice in the United States?

b. Suppose that rice is the only commodity in the world. What would happen to the real exchange rate between the United States and Japan?

A teacher has received false information that one of your friends is a cheater. Explain how each of the following can lead the teacher to continue in this false belief: • Overconfidence • Mental set • Confirmation bias

Which of the following would indicate that a child understands conservation? a. She would continue to seek a toy hidden under a blanket. b. She would "hide" in a game of hide-and-seek by covering her eyes with her hands. c. She would believe that a clay snake would have the same amount of clay as the clay ball that was used to make it. d. She would recognize that 7+3 involves the same mathematical relationship as 10-7. e. She would be able to comprehend the logic of if then statements.