Ultimately, approximately ____ of very-low-birthweight infants die despite massive medical intervention
a) 80%
b) 75%
c) 50%
d) 25%
c
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Experiments involving deception
a. should never be done on ethical grounds. b. should be carefully considered, since aftercare of the participant would be impossible to obtain. c. obligates the researcher to explain the true nature of the experiment after the participant has been tested. d. should only be conducted with experiments involving pain and/or suffering.
Karolina can see only a part of a stack of books because a box is partially obstructing the view. Karolina, therefore, knows the box is in front of the stack of books. This cue to depth is known as ________.
A. interposition B. convergence C. linear perspective D. texture gradient
What has happened to family incomes around the world over the last three decades?
What will be an ideal response?
You are running a simple study to determine if time of day affects student test performance. One
group takes a test at 9 AM, the other group takes the same test at 6 PM. During the afternoon session, the group seems distracted by the school band, which is practicing nearby, but the students finish the test on-time with no apparent problems. When you analyze the results, you find the morning group performed significantly better than the evening group. What should you conclude? A) The results are valid because researchers cannot always control factors like noise. B) The results are valid because the difference was significant. C) The results may be invalid because time of day affects mental performance. D) The results may be invalid because the band's noise was an extraneous variable.