Xiao is gathering research on the number of daily calories people typically consume at various ages. He gathers data about the number of calories eaten by 25 people at each of the following ages: 10, 20, 30, 40, 50, 60, and 70 years
What type of research design is Xiao using?
A) continuous
B) cross-sectional
C) sequential
D) longitudinal
Answer: B
Rationale: Cross-sectional designs are used to measure and compare samples of people at different ages at a given point in time. In contrast, longitudinal design follows the development of the same set of individuals through time.
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Garfield is having great difficulty controlling his appetite. All he wants to do is eat and no matter how much he eats he is still hungry
His weight is approaching 400 pounds and he still constantly wants to eat. His physician says the problem is due to a disorder in a specific center of the brain. The brain center is most likely the a. medulla b. cerebral cortex c. thalamus d. hypothalamus
Which of the following statements would your textbook authors be likely to find the most worrisome?
a) Being open-minded about topics associated with pseudoscience is no big deal. b) The majority of Americans do not believe in the existence of ghosts or witches. c) Pseudoscience seems to be so much more interesting and engaging than science. d) Science cannot answer all of the questions I am interested in, such as "Why am I here?" or "What is my life's purpose?"