Which measure of variability is most general and, hence, least useful?
a. median
b. range
c. standard deviation
d. mean deviation
Ans: b
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An essential condition for external self-reinforcement to be effective is ________
a. the teacher must administer the reward b. the teacher must control access to the reward c. the student rather than the teacher must determine the evaluative criteria d. both the teacher must administer the reward and the student rather than the teacher must determine the evaluative criteria e. all of these choices
An observable sign of physical abuse could include:
A) Bruises in varying stages of healing. B) A scab and scrape on a skinned knee. C) A rash on the cheek. D) A pink and weeping eye.
Children typically have some characteristics not seen in either of their biological parents. Which one of the following is the most common source of these unique characteristics?
a. Some segments of genetic material at the equivalent locations in paired chromosomes cross over, essentially swapping places. b. Grandparents or great-grandparents may chemically "shield" certain genes, with these shields eroding only gradually over several decades. c. When certain aspects of the meiosis process are delayed by several weeks, new genetic patterns inevitably emerge. d. Certain segments of genetic material erratically and unpredictably "leap" from their initial chromosome to a very different one, typically as a result of high hormone levels in the mother.
A strategy where some students take the part of characters in material that has been read, and others take the part of reporters interviewing the characters, is known as a(n)_______ _______.
Fill in the blank(s) with the appropriate word(s).