7.2 Mood, habits, and addiction
Happiness
- Related to
- Reward prediction errors
- certain rewards
- expected values
Habits
- Fundamentals
- Learned,后天习得
- fast, efficient: 执行时无需复杂思考
- Require little cognitive resources: 习惯形成后无需占用太多大脑思考资源
- hard to change
Drug addiction
- will mess up the reward system we mentioned in happiness
- drugs of abuse
- risk factors for addiction
- Chronic stress
- history of psychological trauma
- neuropsychiatric disorders
- behavioural genetic traits
Tutorial 7
- Post-traumatic stress disorder (PTSD)
- people with a range of reactions after experiencing or witnessing a traumatic event.
- People who have PTSD may continue to feel stressed or frightened, even though they are not in danger
- Disgnosis: their symptoms last for an extended period after a traumatic event and begin to interfere with aspects of daily life,
- Anxiety:
- feel extremely worried or nervous more frequently about these and other things
- Depression
- The symptoms range from mild to severe and can disrupt a person’s ability to carry out everyday activities.
- Genetic and environment related to this disorder
- Bipolar disorder
- manic-depressive illness
- People with bipolar disorder often experience
- periods of extremely “up,” elated, irritable, or energized behavior (known as manic episodes)
- and very “down,” sad, indifferent, or hopeless periods (known as depressive episodes).
- Schizophrenia
- mental disorder, characterized by hallucinations, delusions