anxiety Flashcards
Why do we have anxiety
Adaptive, fight or flight, better to be safe than sorry.
Common characteristics
Panic
Biases towards negative/ threatening situations
Specific thinking styles
Trauma
Prevalence Kessler et al 2005
28% lifetime prevalence
Kroenke et al 2007 comorbid with depression =
A worse prognosis
Simon et al., 1995
high costs
Risk factors
Class:
- less income = higher risk. may suffer more traumatic events (Buka et al 2001)
Gender:
- Women 2 times as likely to have GAD, panic, PTSD and phobias. could be social roles, or social cultural factors (70% of rape victims have PTSD).
Phobias
Social phobia = prevalence 3.2%
Advantages of diagnoses
reliability validity labelling offers explanation access to care insurance
Disadvantages of diagnoses
High comorbidity element of many other symptoms labelling might confirm stigma disempowering
Learning theories- Behavioural approach
Classical conditioning Little albert and the fear conditioning (Watson and Rayner, 1920).
- Classical conditioning causes association of panic or fear with place. (Cue paired with trauma)
- Operant conditioning causes reinforcement of avoidance of place. (negative reinforcement)
limitations of behavioural approach
Many people with phobias cannot recall a specific traumatic event in the history of their phobia.
Not all people who have a traumatic conditioning develop a phobia.
Phobias only appear to develop in relation to certain stimuli and events.
A conditioning model cannot account for the phenomenon of incubation
Evolutionary approach
Biological preparedness (Seligman, 1971). These predispositions enable us to learn to quickly fear a certain stimuli that was hazardous to our ancestors. Human classical conditioning studies using fear- relevant stimuli (Ohman 1975), fear conditioned in rhesus monkeys (Cook and Mineka, 1990). Evolutionary accoutns o selection of the cognitive processes involved in anxiety.. The moth effect- ancient adaptation drives attentional biases- modern life creates unhelpful triggers.
limitations with the evolutionary approach
- Cant verify whether phobias were an important selection pressure in the past
- Constructed in a post hoc manner, adaptive stories (McNally, 1995)
- Evolutionary accounts are easy to propose and difficult to substantiate.
Developmental model
Sensitive periods.
Familial transmission plays important role genetic factors (burt, 2009)
What are the 4(6) anxiety disorders
Specific phobias Social phobia Panic disorder generalised anxiety disorder (OCD and PTSD)