Even within the same study, people responded quite differently to acupuncture, some showing increased flexibility, while others did not. (A) some showing increased flexibility, while others did not
(B) with some showing increased flexibility, while others did not
(C) with some showing an increase in flexibility and others did not
(D) some showing an increase in flexibility, while others not
(E) with some showing increased flexibility and others not

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a study of twenty 4th grade classrooms in which researchers ask the schools to systematically vary the time of day reading is taught, and collect weekly assessments of reading comprehension for each child over a three-month period. the collection of data, by a playground designer hired by the superintendent of schools, about the physical dimensions of school playgrounds, presence of fencing, and the kinds of equipment currently provided. a feasibility study for implementing a year-round school program, focusing on economic issues such a facilities utilization and transportation costs. an analysis of aggregate data comparing statewide high school graduation rates provided by the state department of public instruction, using county tax information.

Intelligence tests are often used to predict a person's future ability to perform in a school setting. alfred binet's initial purpose for developing intelligence testing was to aid students in getting the remedial they may have needed in elementary school. which of the following measures is the best criterion for evaluating the predictive validity of intelligence testing? act school attendance school grades sat job placement

The 13th amendment ended slavery in the united states. what would be the best reason congress decided to amend the constitution to make this practice illegal? a) congress felt all women deserved the right to vote. b) congress felt slavery was ethically and morally wrong. 'c) congress believed everyone should have us citizenship. d) congress believed abraham lincoln should have amended the constitution.