An artifact such as experimenter bias is a threat to the validity of measurement because the outcome measurements may be distorted by the artifact artifact will reduce reliability which will, in turn, reduce validity artifact is an external factor, unrelated to the experiment artifact will allow participants to identify the experimental manipulation

the article must be ratified by three-fourths (38) of states within a proscribed deadline.

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the values of the selma marchers was to bring   their ability to vote into law. mlk was not hat march, which was protesting toward lbj

the packers and the chiefs played in the first super bowl, which was held in los angeles in 1967. -is the sentence that would stand out the most when scanning a paragraph.