Which of the following has the greatest impact on most children's and teenagers' sexual attitudes and behaviors?

What has research on the effectiveness of Head Start revealed?

a. long-term increases in IQ levels b. no reduction in cultural-familial intellectual disability c. short-term increases in IQ and academic achievement d. improved health but no differences in academic performance

One difficulty of the current system of education in the United States of America is that some students are put into advanced placement (AP) classes, while some students are put into basic classes

Not surprisingly, students who are told that they are expected to excel tend to show better learning and results in their classes, while students who are not told that they are expected to excel tend not to. This result is one example of the __________ confirmation. a. behavioral expectation b. self-serving c. population bias d. dispositional