When every member of the population has an equal chance of being in a sample, we call that sample ____________.

a. a lottery
b. random
c. the margin of error
d. good research


ANS: b.

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Allan learned a subtraction fact because he was able to build upon an addition fact he already knew. This is an example of learning through

a. a mnemonic device. b. drill and practice. c. positive reinforcement. d. contingency contracting. e. adding to prior knowledge.

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

Researchers may want to create hypothetical scenarios when manipulation of the independent variable is unethical or unfeasible.

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Skylar is playing with the toy truck. She pushes it into the toy garage and then goes to get a different toy truck. Skylar is demonstrating which level of symbolic representation?

a. Level 1: Functioning unitary activity b. Level 2: Inappropriate combinational activity c. Level 3: Appropriate combinational activity d. Level 4: Transitional activities

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At what age do children begin to connect maps with their knowledge and experiences?

A. 4 years B. 5 years C. 6 years D. 7 years

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