6. Studies of Cohort and Period Differences
9. The Relationship Between Cognitive Styles and Intellectual Functioning
10. Health and Maintenance of Intellectual Functioning
11. Health Behaviors and Intellectual Functioning
12. Lifestyle Variables That Affect Intellectual Functioning
13. The Sequential Study of Personality Traits and Attitudes
14. Influences of Personality on Cognition
15. Family Studies of Intellectual Abilities in Adulthood
16. Subjective Perceptions of Cognitive Change
17. Influences of Family Environment on Cognition
18. Biological Influences on Cognitive Change
19. The Prediction of Individual Cognitive Decline
20. The Role of Longitudinal Studies in the Early Detection of Dementia