An inactive substance, such as a sugar pill or a saline injection, that is given to subjects to make them think they've taken a drug is called a(n)
a. placebo.
b. extraneous variable.
c. dependent variable.
d. control drug.
A
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A correlation is a numerical measure indicating the cause-and-effect relationship between two variables
Indicate whether this statement is true or false.
From past experience, you know that commercial jets typically fly around 500 miles per hour at a height of 30,000 feet. However, as you watch one fly high overhead, it seems to slowly pass by. What monocular depth cue best explains this?
a. motion parallax b. linear perspective c. overlap d. texture gradient
The typical newborn sleeps ______ a day.
Fill in the blank(s) with the appropriate word(s).
Which of the following is NOT associated with marital conflict?
A) ?Alcoholism. B) ?Role compromises. C) ?Physical health problems. D) ?Domestic violence.