biological transitions
hdfs 239
  • Announcements:
    • Practice On-line Quiz
    • To make the class material larger, click on NO FRAMES

  • Pubertal development
    • Step 1: The setup
      • Activational v. organizational effects of hormones
    • Step 2: The change
      • "Puberty begins, not with a rise in hormones, but with decreasing sensitivity of hypothalmus to hormones"
      • Endocrine system feedback loop
    • Step 3: Completion
      • 5 key somatic changes:
        • rapid somatic growth
        • further development of the gonads
        • development of secondary sexual characteristics and sex organs
        • changes in body composition
        • growth of circumulatory and respiratory system

    biological transitions
    hdfs 239
    Individual differences in pubertal development: Genetic, somatic, and social influences
    • Genetics:
      • What do we mean when we say 'genetic'?
      • Correlations reflect RANK ORDER, not means
    • Somatic:
      • Secular trend
      • Diet
    • Social:
      • Stress