Dr. paul found that college students between the ages of 18 and 23 performed better on a cognitive task in a low-noise condition than in a high-noise condition. dr. ben wants to repeat dr. paul's study by adding age as a variable—18-23 and 65-74. he predicts an interaction between the age and noise variables. in this case, dr. ben is questioning the validity of the original study.

Which of the following selections is least useful for supporting the claim that states intentionally built unequal school systems? question 1 options: the supreme court ruling in plessy v. ferguson (1896) wrote into law that america had two separate societies: one black and one white. it was very clear by the mid-1900s that southern states had expertly built separate educational systems. these schools, however, were never equal. states with laws keeping schools segregated never gave equal amounts of money to their black and white schools. ten years after brown, fewer than 10 percent of southern public schools had integrated. some areas did not comply at all.

What has contributed to the growth of agriculture as big business in the midwest

Mark s. fleisher identified which traits as essential to effective work in corrections?