A Researcher Tests a Sample of First-Grade Children for a School

question 32

Multiple Choice

A researcher tests a sample of first-grade children for a school district to help the district identify areas in which the curriculum should be changed.The measure is a valid and reliable measure of intelligence.The researcher estimates the population mean for the intelligence scores and observes a large value for the standard error of the mean.The best thing the researcher could do to improve the estimate is

• A) test children in a different, more heterogeneous school district.
• B) compute a confidence interval.
• C) change the testing procedures to increase the variability of the test scores.
• D) increase the sample size of children tested.

---

Definitions:

Problem Solving

The process of identifying a problem, developing possible solutions, and choosing and implementing the best solution.

Cognitive Development

Refers to the growth and change in a person's ability to think, reason, and understand over time.

Piaget

A reference to Jean Piaget, a Swiss psychologist known for his pioneering work in the field of cognitive development in children.

Formal Operations

The final stage in Piaget's theory of cognitive development, starting around age 12, where individuals develop the ability to think abstractly and logically.