In the scientific use of the term, a "theory" is ________
a. a prediction about the outcome of a given experiment or study
b. an organized system of assumptions and principles that purports to explain a set of observations and how they are related
c. a precise definition of a term in a hypothesis, which specifies how it will be observed and measured
d. a scientist's best guess about the cause of an event or phenomenon
Answer: b
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Lewis Terman's longitudinal study showed that people who have very high IQ's tend to __________
a) be deficient in social skills. b) be somewhat less adept at physical challenges. c) have poor emotional control and poor mental health. d) be well-adjusted personally and socially.
A randomized clinical trial is a study in which __________.
A. all subjects are treated the same, to see what percentage of the total gets better, what percentage stays the same, or what percentage gets worse B. people are assigned to different types of treatment in alternating alphabetical order, to see which treatment is best C. people go through different treatments in random order, to see which one works best D. people are assigned to different groups based on a flip of the coin; one half goes to a treatment group and the other to a seemingly identical placebo group