According to the Scientific American (2017) article "The Delusion of Alternative
Facts," which of the following statements best explains why we cannot rely
purely on our own perceptions for determining what is actually true? Answer -
ALL OF THESE (High confidence does not equal objective proof, Perception
depends on perspective - our neural wiring makes it impossible for humans to
think or see in absolute terms, We cannot ascertain what's true, but we can
establish what's false)
A key distinguishing factor between experimental and non-experimental
research is: Answer - In experimental research, the investigator is directly
manipulating a variable to observe the resulting outcomes; in non-
experimental research, relationships are only observed and described.
A graduate student decides to investigate whether various doses of Vitamin C
can prevent the common cold. A review of the scientific literature suggests that
Vitamin C does not in fact prevent the illness, but the graduate student thinks
that perhaps the doses of Vitamin C tested in previous studies haven't been
high enough. He recruits 100 students and breaks them into four groups, giving
each group a daily supplement containing either: a placebo, 1000mg Vitamin C,
2000mg Vitamin C, or 5000mg Vitamin C. He then exposes all participants to
the rhinovirus (common cold virus) and counts how many students in each
group get sick.
Which of the following terms best describes this type of study? Answer -
Experimental
An internet site claims that raspberry ketones help the body burn fat faster.
Which of the following features of the website would help you believe this