Which of the following would not be considered a primary source for a history term paper on lincoln's gettysburg address 1. a documentary film about the impact of the speech on the public opinion. 2. a telegram sent by a reporter who witnessed the speech to his editor. 3. a photograph showing lincoln on the podium delivering his marks 4. a copy of lincoln's speech from the library of congress's website.

A documentary film about the impact of the speech on the public opinion would not be considered a primary source, but a secondary source. However, it may still be a valid source of information, if the main sources used to do the documentary film are accurate.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.

answer; deviation iq; //(a)