The final step (within the inner ear) that is required to convert vibrations into sound sensations involves the movement of the
a. hair cells.
b. tympanic membrane.
c. pinna.
d. ossicles.
ANSWER: a
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Callie has gathered extensive data regarding the working conditions and stress levels of domestic workers in five U.S. cities, including their annual income. She arranges the data from low to high and notes how many workers are in each category using a bar chart. This is called a ____
a. standard deviation b. frequency distribution c. normal distribution d. median
The subjects who do NOT receive the treatment or independent variable in an experimental study are called the
A. control group. B. dependent group. C. independent group. D. experimental group.
Studies have shown that prepared childbirth classes
a. do not produce healthier mothers and babies than regular medical practice. b. lengthen labor. c. produce healthier mothers and babies than regular medical practice. d. increase the use of pain medications during labor.
In a study that had eye-witnesses recall a car accident, what influenced the subjects with regard to the speed they reported the cars were going at the time?
A-How soon after witnessing the accident they were asked about it. B-The time of day the accident took place. C-The number of different questions the subjects were asked about the accident. D-Whether or not the subjects had just been startled by the researchers or not. E-The precise verb used (e.g. "smashed" vs. "bumped") when asking the subjects about the accident.