The two most important sources of systematic variation in RCTs are?

A. Counterbalancing and randomization
B. Systematic and unsystematic variation
C. Practice effects and boredom effects
D. Frequency distributions and positive skews


Answer: C

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The process called heuristics can be taught to children.?

a. True b. False

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The ability to describe what one has done, explain what resulted and why, is called _______

a. reflection c. transfer b. articulation d. holistic

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Research suggests that for students, especially those in grades three and up, the activity which leads to the greatest growth in vocabulary is:

a) conversation with peers b) conversation with adults c) reading d) writing

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There are two main sources of information today: libraries and the web.

Answer the following statement true (T) or false (F)

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