Learning Objectives

After reading this chapter, you will be able to:

  • Describe how scientists have defined intelligence.
  • Critique the scientific methods for measuring intelligence.
  • Identify how the structure of the nervous system relates to intelligence.
  • Appraise the relative contributions of heredity and environment to intelligence.
  • Assess the impact of the typical aging process on cognitive functioning.
  • Compare the impacts of intellectual disability, autism, and attention-deficit/hyperactivity disorder on intelligence.