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What is reactivity: Explain how reactivity impacts measurement.


What is reactivity: Explain how reactivity impacts measurement.

What is reactivity: Explain how reactivity impacts measurement.

Week Three Homework ExercisePSYCH/610 Version 21

University of Phoenix Material

Week Three Homework Exercise

Answer the following questions covering material from Ch. 6 & 7 of Methods in Behavioral Research:

1. What is reactivity? Explain how reactivity impacts measurement.

2. What are the key features of an experimental design, or ‘true experiment’? How does this compare to case studies?


3. What is survey research and when is it most useful?

4. What issues should be considered when constructing surveys? What are the implications of double-barreled, loaded, and negative questions?

5. What are some survey administration methods? When are each of these methods most appropriate?

6. Define interview bias and provide an example.

7. What is the difference between probability and non-probability sampling techniques?

8. A researcher attends an art reception in a major metropolitan city. She decides to approach people over the age of 50 and ask them to fill out a brief survey about purchasing artwork. Is this a probability or a non-probability sampling technique? What type of sampling procedure is this—simple random, stratified random, cluster, haphazard, purposive, or quota?

9. What is the relationship between sample size and survey results? What are some techniques to evaluate potential sampling bias?

You must proofread your paper. But do not strictly rely on your computer’s spell-checker and grammar-checker; failure to do so indicates a lack of effort on your part and you can expect your grade to suffer accordingly. Papers with numerous misspelled words and grammatical mistakes will be penalized. Read over your paper – in silence and then aloud – before handing it in and make corrections as necessary. Often it is advantageous to have a friend proofread your paper for obvious errors. Handwritten corrections are preferable to uncorrected mistakes.

Use a standard 10 to 12 point (10 to 12 characters per inch) typeface. Smaller or compressed type and papers with small margins or single-spacing are hard to read. It is better to let your essay run over the recommended number of pages than to try to compress it into fewer pages.

Likewise, large type, large margins, large indentations, triple-spacing, increased leading (space between lines), increased kerning (space between letters), and any other such attempts at “padding” to increase the length of a paper are unacceptable, wasteful of trees, and will not fool your professor.

The paper must be neatly formatted, double-spaced with a one-inch margin on the top, bottom, and sides of each page. When submitting hard copy, be sure to use white paper and print out using dark ink. If it is hard to read your essay, it will also be hard to follow your argument.

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