In an experiment, confounding occurs when
a. more than one independent variable is manipulated.
b. an uncontrolled variable covaries with an independent variable.
c. an interaction occurs between two independent variables.
d. an interaction occurs between three or more independent variables.
B
Psychology
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In 1910, what German microbiologist developed an arsenic-containing chemical that destroyed bacteria that caused syphilis and prevented paresis?
a. Sigmund Freud b. Paul Ehrlich c. John Haslam d. Jean Fournier
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Some psychologists reserve which of the following terms for people with IQs higher than 140 or those who are exceptionally creative?
a. gifted b. genius c. precocious d. savant
Psychology