Dr. chiu, a reading specialist, wants to know if third-graders who learned to read predominantly by phonics are better at comprehending text than children who learned to read predominantly by whole language. to find out she decides to randomly assign two groups of first-graders to either a phonics-based reading program or a whole language-based reading program. she will then give each group a reading comprehension test when they reach third grade. this study provides an example of a(n)

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a researcher conducts a comparison of the comments made in a publicly available blog and the blogger's comments on a similar topic in a weekly magazine. undergraduate students in a field methods class are assigned a research question and asked to interview another classmate, to be followed by a class discussion on interview techniques. a cognitive psychologist enrolls undergraduate students for a computer-based study about the effect of mood on problem-solving behaviors. a researcher sets up a meeting with the superintendent of a large and diverse public school system to get data about the ethnic composition of the school system and the number of students receiving free lunches.