Final Exam Flashcards
What initiates the “fight-or-flight” response? (A stress response)
Stress Exposure
Hypothalamus activates:
Sympathetic Nervous System and Hypothalamic-Pituitary-Adrenal (HPA) axis
Increased heart rate, increased respiration, decreased digestion
Sympathetic Nervous System
Triggers release of stress hormones, e.g., cortisol
Hypothalamic-Pituitary-Adrenal (HPA) axis
Stress response (F/F) in short term
Adaptive
Overractivation/repeated activation of the stress response in long term
Maladaptive
Symptoms begin within four weeks of traumatic event; lasts for less than one month
Acute Stress Disorder (ASD)
Symptoms may begin either shortly after the exposure to traumatic event, or months or years afterward and last for at least one month
Posttraumatic Stress Disorder
The 4 symptom clusters of PTSD
Intrusion Symptoms, Avoidance Symptoms, Negative Alterations in Cognitions & Mood Symptoms, and Alterations in Arousal & Reactivity Symptoms
Intrusive memories, nightmares, flashbacks, psychological and physiological distress at reminders
Intrusion Symptoms
Avoids memories, thoughts, feelings associated with the trauma; avoids external reminders (e.g., conversations, activities, places, people) of trauma
Avoidance Symptoms
Forgets parts of the trauma, persistent, distorted cognitions about the cause or consequences of the trauma that leads individual to blame self, diminished interest and estrangement from others
Negative Alterations in Cognitions & Mood Symptoms
Irritability, reckless or self-destructive behavior, hypervigilance, exaggerated startle response, problems with concentration, sleep problems
Alterations in Arousal & Reactivity Symptoms
Lifetime prevalence of trauma exposure:
Women = 50%
Men = 60%
Lifetime prevalence of PTSD
8%, Women = 10%, Men = 5%
T/F: Most people who experience trauma do develop PTSD
False; most people who experience trauma do not develop PTSD
Who develops PTSD?
People with childhood experiences of trauma (greater risk) and people who lack social support
Through repeated exposure to fearful situations
OR
Through repeated exposure to perception of life threats
Excessive Activation of Stress Response
Features of the trauma that predicts who develops PTSD
- Direct exposure
- Life threat/injury
- Frequency of trauma (single incident event versus multiple traumas)
Severity of Trauma
Witnessing someone being badly injured or killed
Being involved in a natural disaster or a life threatening accident
Combat exposure
Frequently experienced traumas
Prolonged Exposure (Foa) - behavioral
Cognitive Processing Therapy (Resick) - CBT
Exposure-based treatments for PTSD
Teaches you to gradually approach trauma-related memories, feelings, and situations
Prolonged Exposure (PE)
Teaches you how to evaluate and change upsetting thoughts had since trauma; would usually write about the trauma
Cognitive Processing Therapy (CPT)
Other Treatments for PTSD
Eye Movement Desensitization and Reprocessing (EMDR) and Medication (SSRIs)
A. Restriction of energy intake relative to requirements, leading to a significantly low body weight in context of age & sex
B. Intense fear of gaining weight/becoming fat, or persistent behavior that interferes with weight gain, even though significantly underweight
C. Disturbance in the way one’s body weight/shape is experienced; lack of recognition of seriousness of low body weight
Anorexia Nervosa (AN)
Subtypes of AN
Restricting Type and Binge-Eating/Purging Type
Lose weight by restricting “bad” foods (e.g., dieting, fasting), eventually restricting nearly all food
Show almost no variability in diet
No recurrent episodes of bingeing/purging in last 3 mo
Restricting Type
Lose weight by vomiting after meals, abusing laxatives or diuretics, or engaging in excessive exercise over past 3 mo
- Like those with bulimia nervosa, people with this subtype may engage in eating binges
Binge-Eating/Purging Type
90-95% female
Peak onset btwn 14-18 years
2-6% die from medical complications
Prevalence of AN
.5-2% of females, and .9% of men in Western countries
Lifetime Prevalence (AN)
- Motivated by fear of becoming obese and losing control
- Preoccupation with food
- Distorted thoughts
- Comorbid depression, anxiety, substance abuse, OCD
- Can result in medical problems such as lowered heart rate and lanugo (soft hair that covers body (think newborn))
Characteristics of AN
Defining Feature of AN
Being significantly underweight
A. Recurrent episodes of binge eating
- Eating, in a discrete time period, an amount of food that is larger than most people would eat during a similar period of time
- Sense of lack of control over eating during the episode
B. Recurrent inappropriate compensatory behavior to prevent weight gain (e.g., laxatives, vomiting, fasting, excessive exercise)
C. Both A&B occur at least once a week for 3 months
D. Self-evaluation is unduly influenced by body shape and weight
E. Does not occur during episodes of AN
Bulimia Nervosa (BN)
Usually preceded by feelings of great tension and/or powerlessness; may be pleasurable, followed by extreme self-blame, guilt, depression, and fears of weight gain and “discovery”; carried out in secret (averaging 10 a week)
Binges
90-95% female
Peak onset between 15 - 21
Typically normal weight
Prevalence of BN
1.5-5% in women (higher in college students), .5% in men
Lifetime Prevalence (BN)
A. Pattern of binge eating
B. Binge-eating episodes are associated with eating much more rapidly than normal, eating until feeling uncomfortably full, eating large amounts of food when not feeling physically hungry, eating alone bc of embarrassment by how much one is eating, feeling disgusted with oneself, depressed, or guilty afterward
C. Marked distress regarding binge eating
D. Binge eating occurs, on average, at least 1x/week for 3 mo
Binge-Eating Disorder (BED)
Approx. 3.5% in women and 2% among men
Impacts a more diverse group of individuals
Prevalence of BED
T/F: African American teenagers are 50% more likely than Caucasian teenagers to show bulimic behavior (bingeing & purging)
True
Biological factors, psychological problems (cognitive and mood disturbances), sociocultural conditions (environmental stress, societal risks, family environment)
Causes of ED
Identical twins (70%) vs fraternal twins (20%)
Genetic Component to AN
Identical twins (23%) vs fraternal twins (9%)
Genetic Component to BN