Drug experiments in clinical trials describe the number of treatments and doses provided to groups of study participants as ____________.
a. control groups
b. dependent variables
c. placebos
d. treatment arms
Ans: D
Psychology
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____ was the first successful demonstration of artificial intelligence.?
a. ?Galileo's telescope b. ?Babbage's calculating machine c. ?La Mettrie's self-winding watch d. ?Descartes's automata e. ?Newton's clocks
Psychology
According to the central limit theorem, the standard error for a sample mean becomes smaller as the sample size increases
Indicate whether the statement is true or false
Psychology
When a female’s first menstruation occurs, this is called ________
Fill in the blank with correct word.
Psychology
The drug Ecstasy (also called MDMA) is classified as which of the following?
a. a stimulant b. a depressant c. a hallucinogen d. an opiate
Psychology