The wavelength of a light wave refers to:
a. the distance between the crests of a wave.
b. the amplitude of a wave.
c. the maximum height of a wave.
d. the variations in saturation.
Answer: a
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If the differences in IQ scores among people were entirely a result of genetic factors, you would expect to find that the correlation in IQ scores would be
a. higher for fraternal twins reared together than for identical twins reared apart. b. higher for identical twins reared together than for identical twins reared apart. c. the same for identical twins reared together and for identical twins reared apart. d. lower for identical twins reared together than for identical twins reared apart.
The BEST evidence supporting the role of genetic factors in intelligence is provided by studies that compare
a. children to both their biological and adoptive parents. b. identical and fraternal twins. c. people born in different generations since the 1930s. d. children raised in poverty and middle-class children.
Penelope has been drinking coffee for the past ten years. She says she needs the caffeine to stay awake in her classes and simply get through the day. If she does not drink coffee on a particular day, she experiences severe headaches, fatigue, and shakiness. Penelope is most likely ____ dependent on caffeine and is experiencing ____
a. ?physically; drug withdrawal b. ?physically; learned expectations c. ?psychologically; drug withdrawal d. ?psychologically; learned expectations
John has been saying he wishes he could just die, saying things like, "It doesn't matter if I pay my bill," and he just gave away his favorite CD collection saying he wouldn't need it anymore. These behaviors should be considered
a. methods of getting attention. b. signs of a break with reality. c. warning signs of a potential suicide attempt. d. symptoms of cyclothymic disorder.