In his 1776 book, "an inquiry into the nature and causes of the wealth of nations," adam smith notes that specialization increases productivity. which of the following was the cause of this phenomenon?

answer; decipher the motives for why people behave the way they do;

answer; sutherland-differential association;

it might look like that the ideal way to research the health effects of trans fats is through a controlled experimental feeding trial. but these kinds of trial have several important limitations that the researcher must look into:

short in duration (this factor usually checks up on the intermediary risk factors rather than the actual outcomes of the disease)

limited dietary changes

only makes use of healthy participants