Addiction Flashcards
Define addiction
Periodic or chronic intoxication produced by repeated consumption of drugs, natural or synthetic’
Give a second definition of addiction
A disorder where the individual engages in a behaviour that was pleasurable but becomes compulsive and has harmful consequences
Which is the only 1 non drug addiction in the DSM 5
gambling
How many addictions are in the DSM 5
10`
Give 4 criteria of an addiction in the DSM 5
wanting to quit but cant
not managing to do what you should (work)
needing to do it more often than when you started
carrying on despite physical harm it may cause
Name the six characteristics of addictive behaviour
salience mood modification tolerance withdrawal symptoms conflict relapse
Explain salience
the behaviour is the most important thing in your life
Explain mood modification
it provides excitement
Explain conflict
problems with those directly around you as a result of the addiction
Explain relapse
repeating behaviour after trying to stop
What are the 4 things usdd to describe addiction in the specification
withdrawal syndrome
tolerance
physical dependance
psychological dependance
What is withdrawal syndrome
a collection of symptoms when the substance is no longer present
What is dependance
a need for substance that causes withdrawal symptoms
What is tolerance
a lowered response to a substance due to repeated use
What is cross tolerance
a tolerance to one drug that leads to a tolerance of another drug
Name a study into cross tolerance/vulnerability to addiction
Marks et al (1997)
alcoholics more likely to have a nicotine dependancy
Name a study into tolerance
Begg (2001)
normal drinkers 8g
alcoholics 16g
Name a study into withdrawal symptoms
Grabus (2005)
mice showed withdrawal symptoms from nicotine and over time their physical response decreased
What do geens create for drugs
a predisposition
What are low levels of dopamine receptors linked with
addiction as dopamine is linked with reward and pleasure
Why are Asians less likely to become addicted to alcohol
50% of asians metabolise alcohol slower than europeans so feel more sick drinking it and therefore drink it less
Name a study looking into genetic vulnerability
Kendler et al 2012
individuals with one addicted parents who were adopted away at a 9% risk, double normal
Evaluate genetic vulnerability
nativist-interactionalist arguement with evdience from twin studies
bio determinism doesnt account for free will
socially sensitive as says people dont have a choice
bio reductionist enables controlled research but oversimplifies a complex phenonemon
What does increased stress lead to
increased vulnerability
What are the different types of stressors
acute (severe short term)
chronic (long term)
Name a stress study
Tovalacci et al 2013
highly stressed uni students more likely to become nicotine, alcohol and the internet
Evaluate the importance of stress
cause and effect hard to establish, stress could be caused by the addiction
Name a study that looks at personality and addiction
Eysenck (1997)
individual develops an addictive habit because it fulfuls a purpose related to their personality traits
Which personality type is closest linked to addiction
impulsivity
Name a study to do with impulsivity
Ivanov et al 2008
impulsivity and drug use closely linked
What type of risk factor is personality
proximal risk factor
What is percieved parental approval
people thinking that their parents have a positive attude to a behaviour
Name a study into percieved parental approval
Livingston (2010) high school students who were allowed to drink at home are more likley to excessively drink as college students
Name some issues with this study
self report
difficult to separate and measure family and other influences
correlation not causation
Name another risk factor in addiction
peers
What are the 3 ways O’Connell (2009) suggests peers increase addiction risk to alcohol
peers behaviour
peers provide opportunity and access
an individual overestimates how much their peers drink
What are some issues with peer studies
influence of peers changes with age
difficult to separate cause and effect
doesnt account for social factors
What are some practical applications of looking at risk factors
when we understand the risks can lead to treatment and preventation
What are the two key brain neurochemistry explanations for nicotine addiction
desensitisation model
nicotine regulation model
Who came up with the desensitisation hypothesis
Dani and Heinemann 1996
Name the two branches of the desensitisation hypothesis
ACh receptors
Dopamine transmission
Explain ACh receptors
nicotine molecules bind with a receptor, and initially causes dopamine to be released
but then immediately after, the nicotine receptor shuts down and can temporarily not respond to neurotransmitters
leads to desensitisation and downregulation, a reduction in number of active neurons
Explain dopamine transmission
When receptors are stimulated by nicotine, dopamine is released into the mesolimbic pathway which is part of the brains reward and pleasure centre
How does ACh become nACh
by nicotine binding with the receptor
Explain the nicotine regulation model in terms of withdrawal
overnight, the receptors become resensitised and more active, so the cravings come back
this is why many say the first cig of the day is the best as it reactivates the dopamine reward system
Explain the nicotine regulation model in terms of dependance and tolerance
smoker is motivated to keep smoking to avoid the unpleasurable withdrawal symptoms
daytime downregulation and nighttime upregulation creates chronic desensitisation to nAChs
Explain the supporting research evidence for the role of neurochemistry in nicotine addiction
McEvoy et al (1995)
haloperidol increased smoking in sz patients as it produces a nicotine hit by increasing dopamine release
importance of dopamine in the reward system of the mesolimbic pathway seen through brain imaging studies (Ray et al 2008)
Explain the real life applications of neurochemistry explanations
new treatments such as nicotine replacement therapy in the form of patches and inhalers
smoking has high co-morbidity with other mental diseases, so can help us with preventation and treatment of those also
Explain why neurochemistry is a limited explanation
role of dopamine over-emphasised as more research showing there are other mechanisms involved such as GABA and serotonin
reductionist view at a low level as it ignores hugher level factors such as social and psychological as only 50% become nicotine addicts
How does operant conditioning help with addiction to smoking
positive - early days, pleasurable consequences from nicotine
negative - taking away withdrawal symptoms
Explain Levin et al study (2010) with operant conditioning
trained rats to self administer nicotine from waterspout
rates increased dose every time
issues of exploration as rats differ significantly from humans
also humans enjoy experience of smoking tobacco
How does classical conditioning affect smoking addiction
pleasurable reward from smoking is primary reinforcer
secondary reinforcers can be friends, pubs, drinkings
What are secondary reinforcers also known as
cue reactivitiy
Explain two cue reactivity studies
Carter and Tiffany (1999)
dependant smokers reacted more strongly to cues than non dependant smokers
Calvert (2009)
strong activation in nucleus accumbens when pack of cigs shown
How does social learning theory explain initiation of smoking
vicarious reinforcement, seeing role model to it and imitating
Explain a study looking at SLT and smoking
Mayeux et al (2008)
longitudinal study
correlation between smoking at 16 and populatiy 2 years later in boys but not girls
How does SLT have practical applications
young people taught necessary skills to resist social influence (Botvin 2000)
What does SLT not explain
why people smoke and not come addicted
why women have more problem quitting and relapsing
What is addiction due to
distorted/dysfunctional thinking