PSYC23H3 Lecture Notes - Lecture 3: Johann Wolfgang Von Goethe, Twin Study, Epigenetics
Document Summary
Types of stress: positive stress: brief increase in heart rate with small, temporary elevations in stress, examples: First day of school, losing a favorite toy, meeting new caregiver: tolerable stress: more serious stress buffered by supportive relationships. Unrelieved activation of the body"s stress response can weaken the architecture of the developing brain and damage the immune, cardiovascular, and other organ systems. Stress: how to keep stress and fear good or tolerable, what regulates developmental psychobiological development, regulation of stress and fear. Rigid fear learning: pfc, amygdala, hippocampus are negatively biased. Flexible fear learning: pfc, amygdala, hippocampus integrate good and: genes and epigenetics relationship demonstrated via: bad experiences, twin studies and clones identical twins are the natural equivalent of clones. Identical twins are born with the same genes but are influenced by different environments, which allows scientists to track the influence of genetics. These studies demonstrate that physical attributes (e. g. , height, certain diseases) are largely determined genetically.
