2) why do you think jacob riis included this image in how the other half lives? what did he want people to be aware of? what was he concerned about?

When Riis published her book in 1890. The census bureau ranked America has highest population in the globe. During this century, the insurance companies were limited and only found in single cities. Most underwriters, therefore, were required to ensure properties before acquiring them.

However, the insurance companies increased with time, expanded covering broad areas, grew the industries, and helped many people in diverse ways.

The public health was also not in a good state because there were constant concerns about sanitation and other diseases that had engulfed the countries. However, Jacob Riis was at the forefront of protecting the public.

answer; /// i believe that the correct answer is(cognitive revolution);

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.