The Pearson product-moment correlation coefficient is
a. a statistic used to assess the direction and the size of the relationship between two variables.
b. a statistic used to indicate the central tendency of descriptive data.
c. a procedure used to create experimental manipulations.
d. a statistic used to compare groups of individuals in experimental research.
a
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Which of the following is true of knockout mice?
A. They have a gene from another species spliced into their DNA. B. They have a functioning mutation. C. They have a gene that has been disabled or altered. D. They have blocked messenger RNA.
If Country A bases its current policy toward Country B on Country B's past behavior, Country A is using
a. common sense. c. a subgoal analysis. b. an algorithm. d. an analogy.
In the context of Kohlberg's postconventional level of moral development, which of the following statements is true of Stage 5?
A) It relies on universal ethical principles, such as individual dignity, justice, and reciprocity. B) If a law is seen as unjust or contradicts the right of the individual, it is wrong to obey it. C) Moral judgments are derived from conventional standards, not from personal values. D) It is recognized that many rights have great value and should not be violated.
According to Vygotsky, sociodramatic play may have benefits for ______
a. physical development b. development of the imagination c. development of conscience d. executive functioning