PS1016 - Individual Differences & Mental Health Psychology Flashcards
What are the two main eating disorders in the DSM-5?
Anorexia nervosa and bulimia nervosa
What is AN?
- reduced food intake, refusal to maintain minimal weight
- fear of becoming fat despite low body weight
- often preoccupied with food and has high mortality rate
Medical complications of AN
- Low BMI, electrolyte imbalance, kidney damage
- Poor temp regulation, heart arrhythmias
- Hair thinning, brittle skin, vitamin deficiencies
Bulimia nervosa characteristics
- loss of control over food intake (binging and purging)
- Concern with body shape/weight
- normal/high BMI
Medical complications of bulimia nervosa
- throat/mouth damage, dental issues, mouth ulcers
- electrolyte imbalance, heart muscle damage, swollen glands
What is pica?
disorder involving the consumption on non-nutritive substances, e.g. dirt, soap, ice for at least a month
How do AN and bulimia affect body size perception?
Both disorders involve overestimation of body size compared to control groups, shown in body morphing studies (Tovee et al 2003)
What are some historical perspectives on EDs?
13th-14th centuries - self-starvation as an act of piety
19th century - Sir William Gull’s recognition of AN as a medical condition
Main factors in the aetiology of eating disorders
Biological
Sociocultural
Family
Individual
Aetiology of eating disorders - Biological
Genetic predisposition, serotonin imbalances, puberty-related changes
Aetiology of eating disorders - Sociocultural
Media and peer influences promoting thin ideals
Aetiology of eating disorders - Family
Parental pressure, comments on weight, abuse
Aetiology of eating disorders - Individual
Perfectionism, body dissatisfaction, dieting
What are the primary treatments for anorexia nervosa?
- Family therapy (most effective for adolescents).
- Cognitive-behavioural therapy (CBT).
- Limited success with SSRIs or medical interventions
What is the diathesis-stress model?
A framework suggesting that disorders arise when a predisposition (diathesis) interacts with an environmental stressor