The extent to which the intervention, and not extraneous or confounding variables, produced the observed effect in an experimental study is related to what aspect of a study?
a) Content validity
b) External validity
c) Internal validity
d) Experimental validity
c
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Insect safety is important, but not critical
a. True b. False Indicate whether the statement is true or false
?Some liquids float on water because:
A. ?water repels other liquids. B. ?they are less dense than water. C. ?they are denser than water. D. ?they weigh less.
If you wanted to depict trends in ice cream sales over the four seasons, what kind of chart would you use?
a. histogram b. line chart c. pie chart d. bar chart
In Mr. Medeiros's classroom, students are given play money each time they turn in an assignment; they receive additional amounts of money if the assignment is turned in on time and if it is done correctly
At the end of each week, students can use their "money" to purchase special privileges (free time, special privileges, etc.). Mr. Medeiros's approach can best be characterized as: a. Intermittent reinforcement b. A group contingency c. A contingency contract d. A token economy