412 pre-M2 Flashcards
10 substances in SUDs
- alcohol
- cannabis
- opioids
- hallucinogens
- inhalants
- sedatives and hypnotics
- anxiolytics
- tobacco
- stimulants
- other/unknown
SUDs diathesis-stress model
- risk-seeking tendencies could act as a diathesis (strong reward neural pathway)
correlates of SUDs
- associated with 3 leading causes of death in adolescents: accidents/injuries, suicide/self-harm, interpersonal violence
- legal and educational problems
- comorbidity with other disorders
- earlier use (14 vs. 21) linked with more substance-related impairment later (risk marker, not causal)
prevalence of substance use and SUDs
- a lot of variability in adolescents, gets more common with age
- experimentation very common (normative)
- SUDs roughly 11.4% 13-18 years
- substance use rates decreased during COVID and remained low
Early brief interventions for SUD
- norm-based interventions for college students (helping people realize how much others are actually drinking - shift toward descriptive norms)
- large discrepancy between perceptions of peer substance use and what actually happens (overestimating)
- informing about how much you drink (ranked with peers), your perception of others, and how much your peers drink (shift in perceived norms = changing your behaviour according to the norm)
- help reduce frequency and quantity of drinking, but not many studies of efficacy in long-term
injunctive norms
- how much others approve/disapprove of a behaviour like drinking
descriptive norms
- how much others are actually engaging in a behaviour like drinking
outpatient treatment for SUDs
- family therapy
- alcoholics anonymous
family therapy for SUDs
- multidimensional
- working with caregivers to increase parental monitoring
- working with teens to improve coping strategies or fix risk-taking behaviour
- good efficacy (maybe better than CBT)
alcoholics anonymous
- very popular and common worldwide (easily accessible)
- acknowledge that alcohol is a problem, abstinence is the goal, supported by a peer
- 12-step program
- has other equivalents for various drugs (nicotine not as supported)
3 hypotheses in AA
(1) attendance itself leads to reduced substance use (meetings help you use less)
(2) lower alcohol use is associated with more AA attendance (less severe = more likely to use AA and more likely to recover)
(3) better prognosis (more motivated, less comorbidity, more protective and less risk factors) = lower alcohol use and benefit from AA
how does evidence support AA
- RCTs show a lack of efficacy (but studies aren’t well done, participants are coerced instead of self-selected into treatment)
- following Ps who received Tx at a hospital, then attended AA = support for efficacy (lower alcohol use at follow-up)
support for 3 hypotheses of AA
(1) AA involvement at 1-year post-treatment predicted lower alcohol use at 2-year post-treatment
(2) alcohol use at year 1 didn’t predict AA involvement at year 2 (people using less don’t attend AA more)
(3) results not explained by AUD severity, comorbidity, or motivation (not a good prognosis that mediates the results)
inpatient treatment for SUDs
- short duration (4-6 weeks)
- individual counselling, family therapy, treatment for comorbidities
- often followed by outpatient treatment
- can get very expensive, especially for teenagers who need multiple stints
- good rationale (changing the environment and losing access to substances) but very few controlled studies about efficacy
who is least/most likely to use mental health services
- people with severe and non-severe anxiety do not seek treatment (though girls and older adolescents are slightly more likely)
why are people with anxiety less likely to seek treatment
- some fear and anxiety is normal (becoming distressed when separated from parents, short-lived specific fears, must assess if it’s causing distress/disability)
- some anxiety is adaptive (stranger anxiety, test anxiety)
- may not be as upsetting to adults (no causing disruption, may be associated with favourable characteristics like less aggression)
core features of anxiety
- focus on threat or danger
- anxiety is future-oriented (anxious apprehension)
- strong negative emotion or tension (physical sensations, cognitive shifts like worry, behavioural patterns like avoidance)
different anxiety diagnoses
- vary on content of threat and balance of symptoms (cognitive like worry vs. physical)
- specific phobia
- separation anxiety
- generalized anxiety
- social anxiety
- panic disorder
- agoraphobia
- selective mutism
epidemiology of separation anxiety
- often seen in school ages
- high levels of comorbidity (with other anxiety or depressive disorders)
- small percentage of people will persist into adulthood (figure of attachment may change), while others will grow out of it or switch to another anxiety disorder
selective mutism
- failure to speak in situations when speaking is expected, even though they may speak in other settings
common obsessions and compulsions
- contamination, harm to self or others, symmetry
- counting, checking, washing
prevalence of anxiety disorders
- any anxiety disorder in childhood/adolescence = 32%
- specific phobia: 19%
- social anxiety: 9%
- separation: 8%
- GAD: 2%
- PD: 2%
- OCD: 1-2%
- mutism: 0.7%
epidemiology of anxiety disorders
- girls 2:1 boys (as age of onset increases, gender disparity increases)
- OCD has a 2:1 male to female ratio that is present throughout development
- contextual cultural experiences can shape anxiety presentation
- lower SES (single parent, lower parental education) = more anxiety
- ethnicity: more common in Black youth, but White youth receive more treatment (race-based sensitivity)
- comorbidity tends to be the norm (with other anxiety disorders and depression)
- usually, anxiety disorders precede depression (internalizing symptoms are highly related)
race-based sensitivity
- worry/anxiety/physiological arousal about the idea that someone could discriminate against you in the future
- anticipating people treating you differently because of your race, which contributes to your anxiety
comorbidity anxiety and depression
- symptom overlap (GAD and MDD; fatigue, sleep disturbance, irritability, concentration)
- negative affectivity high in both anxiety and depression, but depression is low in positive affectivity and anxiety can still have high positive affectivity
clinical correlates of anxiety
- academic difficulties; high IQ but symptoms interfere with functioning (worry impacts concentration, school refusal)
- social difficulties: becoming increasingly rejected with age because of shyness, more likely to experience peer victimization, perceive their friendships to be of lower quality
developmental course of anxiety disorders
- fears, worries, rituals can be developmentally appropriate (worries get more complex as you age)
- young children may not realize that their fears/behaviours are excessive/atypical, but may get embarrassed as they age
- earlier stages of development = inability to verbalize distress, so behavioural symptoms are more common
- different anxiety disorders have different ages of onset
anxiety disorders age of onset
- separation: 7-8
- OCD: 9-12 (though some kids can present earlier 6-10)
- GAD: 10-14
- social and PD in adolescence
homotypic continuity
- stability
- a disorder predicts itself over time
- separation anxiety becomes social anxiety
heterotypic continuity
- disorder predicts onset or worsening of a different disorder over time
- social anxiety becomes depression
heritability of anxiety
- tendencies toward anxiety are inherited (diathesis)
- children of parents with anxiety disorders are 5x more likely to have anxiety disorders
- twin studies indicate 33% of variability is heritable
what could be the inherited biological predisposition for anxiety
- temperament
- behavioural inhibition: fear and distress in response to novel situations, withdrawal
- negative emotionality
two-stage model of fear acquisition
- stage 1: develops through classical conditioning (pairing US-CS so that the CS will reliably provoke the CR)
- stage 2: avoidance behaviour maintains fear through operant conditioning (avoidance = relief = negative reinforcement of avoidance & reinforces the idea that the fear is valid)
maintenance model of OCD
obsessive intrusive thought = appraised as important = anxiety and disgust = act to neutralize = reduces distress = reinforcement of important appraisals & more likely to have more intrusive thoughts (because you spent so much cognitive time and energy on them)
social information processing model of anxiety
- encoding biases: attention to threat and reading ambiguous situations as more threatening
- threat intensity, personal relevance of threat, current mood, contextual factors will moderate attentional biases (not constantly more attentive to threat)
- interpretation biases: interpreting ambiguous events negatively and catastrophizing mildly negative events which can lead to avoidance
family factors in youth anxiety
- modeling: parents demonstrating anxious responses to children (parent showing fear = child learns to also display fear)
- information transmission: kids being told that something is dangerous (parents over-emphasizing danger)
- low expectations: parents not believing that their kids have the ability to cope
- parental reinforcement of problematic behaviour
study about family factors in youth anxiety
- kids referred for anxiety, ODD, or control group presented with ambiguous situations and give a first answer, then discuss with parents and give a final answer
- parents talked their kids into giving avoidant responses (maybe they had low expectations about their ability to respond in other ways)
- direct transmission of information
- same pattern in kids with ODD: parents socializing and modeling aggressive solutions
- passive GxE (creating environments that foster anxiety) and evocative GxE (reacting to kid’s anxiety and providing avoidant solutions)
SSRIs
- stop the reuptake of serotonin into the presynaptic neuron
- some evidence of effectiveness, but not much research in youth
- reduction of symptoms, moderate effect sizes
core components of effective treatments for anxiety
- reducing cognitive biases by encouraging positive self-talk about anxious symptoms and thoughts that go with them + coping self talk, identifying and challenging automatic thoughts
- reduce bodily tension though diaphragmatic breathing, progressive muscle relaxation, guided imagery
- exposure and habituation (facing fears in a controlled way)
novel cognitive interventions for anxiety
- re-training attention threat bias
- dot-probe task to train attention away from threat (potentially promising)
- kids assigned to attention-bias modification, neutral-neutral, placebo conditions in a double-blind study
- only people in the ABM condition showed decreases in threat bias, anxiety severity and symptoms
exposure therapy
- habituating the CS so that anxiety will decrease naturally (without avoidance)
- CS presented without the US to extinguish the relationship between CS-CR
graded exposure
- start small and work up to higher levels of anxiety
- develop a hierarchy of fears ranked from easiest to hardest (subjective anxiety)
- start toward the bottom of the ladder, rate anxiety during each exposure, and keep practicing until habituation to move up the ladder
- first exposure = strong reaction, then anxiety will decrease so that the next reaction will be lower (peak anxiety will be lower and will decrease faster)
flooding
- can be very effective
- start with an intense confrontation with the most feared stimulus
- not very tolerated, so clinicians opt for graded (less likelihood of dropout)
- if the person cannot tolerate it, so they avoid or fail, they’re unlikely to benefit
CBT for OCD
- normalize OCD and intrusive thoughts (1: psychoeducation)
- create a hierarchy of obsessions (can get very granular)
- exposure response prevention
- teaching to place less importance of intrusive thoughts, limiting compulsions
Child/Adolescent Anxiety Multimodal Study (CAMS)
- testing efficacy of SSRIs, CBT, combined in youth with GAD, separation, social anxiety (treated for 12 weeks, clinician blind ratings of severity)
- all treatments were better than placebo group
- combined was better than SSRIs or CBT alone
- CBT was equal to SSRIs
- these patterns were maintained at follow-up
- moderator: anxiety diagnosis (combined was best for all 3, SSRIs were better for social anxiety - maybe taking the edge off, CBT was better for GAD - skills learned might generalize)
- CBT for SOC didn’t include exposure to peers which could influence the results
CAMELS (Extended Long-term Study)
- 3-11 years post-Tx
- improvements in functioning (family functioning especially) during CAMS led to long-term improvement in anxiety
- improvements in anxiety during CAMS led to improvements in functioning
- patterns were true across all conditions
Pediatric OCD Treatment Study (POTS)
- youth with OCD assigned to SSRIs, placebo, CBT, CBT+SSRI
- severity rated blindly
- combined was better than other conditions
- CBT equivalent to meds
- effect sizes were different based on the site
- Duke: combined was better than meds, which was better than CBT
- Penn: combined and just CBT were equivalent and both better than meds
- clinicians were better at giving CBT at Penn, and there was no added benefit of giving meds
core features of depression
- dysphoria (prolonged sadness)
- irritability (excessive sensitivity, hostility, moodiness)
- anhedonia (loss of pleasure or interest in previously enjoyable activities)
symptom vs. syndrome vs. disorder
- symptom: feeling of emotion or sadness (common)
- syndrome: cluster of common symptoms (extreme on dimension of negative mood/affect)
- disorder: syndrome that has been occurring for a certain amount of time and occurring with impairment in functioning
DMDD differential diagnosis
- cannot be diagnosed concurrently with ODD or Bipolar
- DMDD was created for kids who were being diagnosed with BP but only presenting with irritability
- DMDD is more chronic irritability, while BP is more phasic
- more intense irritability than you might see in MDD/PDD
evidence for DMDD
- applying new criteria to existing data = hazy boundaries, not good at identifying those with the disorder
- DMDD not well differentiated from CD or ODD
- not much difference in symptom severity or functional impairment with or without the disorder
- DMDD diagnosis showed poor stability
- very high comorbidity (also meeting criteria for ODD, which can’t be diagnosed concurrently)
- validity is questionable, high risk of over-diagnosis (irritability is very common in child development)
epidemiology of DMDD
- limited studies before DSM-5 inclusion showed highest rates of symptoms in preschoolers
- highest co-occurrence with depressive disorders and ODD, which can’t be diagnosed concurrently (higher rates of social impairment, school suspension, service use, poverty)
categorical vs. dimensional depression
- many kids and teens have subclinical depression
- still show significant impairment
- at greater risk for developing depression and other disorders/difficulties
epidemiology of MDD
- 1% or preschool-age kids
- 2% of elementary-school kids
- 11% of adolescents
- racial ethnic differences: Latinx youth and Black youth more likely to experience mood disorders, but white youth more likely to receive Tx (lower SES, discrimination)
- lack of gender differences in childhood, and divergence increases after 15
possible explanations for the gender gap
(1) girls more likely to seek help (gender difference found in community samples, but there isn’t necessarily a difference)
(2) biological factors (onset of gender disaprity emerges during puberty, earlier puberty = depression but only in girls, puberty may sensitize girls to stress)
(3) puberty may create stress for girls (changes in physical appearance, sex-role identification), especially interpersonal stress (peer rejection, conflict, generating stress) because girls are invested in their relationships
(4) cognition: negative attributions (but this appears to be equal for boys and girls)
(5) coping: girls tend to ruminate or co-ruminate
preschool depression
- earlier onset associated with more severe and chronic depression later (and higher rates of ADHD and anxiety at school age)
- 2-week duration criteria not as relevant for preschoolers (even if not met, still associated with MDD 2 years later)
- depressed 4-6 year-olds show altered brain activity (more amygdala activity when viewing emotional faces, like you see in adults) - dirupted amygdala functioning could be a biomarker or a consequence of depression throughout lifetime
biological factors for depression
- high (but lots of variability) heritability estimates (35-75%)
- early exposure to stress can sensitize to later stress (stress reactivity)
stress reactivity in depression
- depression in moms associated with higher cortisol levels which can affect fetus
- number of months a woman is depressed is associated with child’s elevated cortisol levels at 6-7 years
- epigenetic transmission of biological processes
- transmission of altered stress physiology postnatal through breastmilk
- early experiences (sensitive period) with caregivers important for attachment (maternal depression may be associated with problematic parenting which alters child’s stress reactivity)
social-cognitive processing in depression
- negative encoding biases (attentional, toward sadness/negative affect)
- interpretation (negative attributional biases, unconscious pattern of response)
- response search not as important, but still tend to identify fewer assertive responses
- response decision: report themselves as less able to carry out assertive strategies (and as less effective) and think avoidant strategies are better
interpretation biases study depression
- looking at high-risk population (cognition as a risk factor)
- blending two words acoustically (neutral-negative, neutral-positive) to make the result a 50-50 chance of hearing either word
- at-risk girls showed a preference for depression-related negative words (but not threat words), control group showed a preference for positive words
interpersonal theories of depression
- less prosocial, less assertive, more avoidant and withdrawn, kids may be more hostile and aggressive
- responding to interpersonal challenges in problematic ways
- difficult to maintain healthy and close friendships with depression (less support, less social skill training)
stress exposure models of depression
- depression caused by exposure to stress
- peer rejection leads to depression
stress generation models of depression
- higher depression leads to higher stress exposure
- symptoms impact your interactions, and those difficulties cause interpersonal problems which exacerbate symptoms
- depressed kids get rejected more
evidence for stress generation models
- clinical interview to place participants into 4 groups: depressed only, externalizing only, both, control
- assessed life stress experiences and rated them in terms of severity, extent to which child contributed to the event (independent or dependent), interpersonal/non-interpersonal
- depression associated with dependent and interpersonal stress
- externalizing associated with dependent and non-interpersonal
- neither was associated with independent
- comorbid had highest levels of interpersonal and non-interpersonal
co-rumination
- dwelling on problems without solving them with a friend
- associated with better friendships, but also with more negative mood
- dwelling on negative affect with a friend = negative mood, but not friendship quality
- rehashing the problem and speculating about what might happen = better friendship, but not negative mood
reassurance seeking
- initially, friends are happy to provide reassurance, but people keep seeking because they think they don’t mean it
- over time, this becomes irritating and invalidating
- which leads to friendship withdrawal and peer rejection
- associated with unstable friendships
contagion
- your own depressive symptoms predict your friend’s depressive symptoms
- co-rumination is the mediating mechanism
CBT model of depression
- based on diathesis-stress model
- depression maintained through negative cognitive and behavioural processes
- target depressogenic thinking, low reinforcement and negative life events, skill deficits
- automatic thoughts and behavioural inhibition
emotional spirals in depression (CBT)
- negative events breed negative moods = negative behaviours = negative thoughts and low expectations for the future
- spirals can also be positive, so you have to disrupt the negative downward spiral and facilitate positive triggers
cognitive techniques in CBT
- identify automatic thoughts and challenge them
- bring thoughts in line with the event instead of solely negative or reframing them positively
- observe thoughts, feelings & behaviour, consider alternative explanations, solve problems rationally
- orientation toward therapy as an experiment (try something to see if it works)
- match developmental level (insight and abstract thinking)
behavioural techniques in CBT
- keep track of mood and activity, develop a list of rewarding activities (that produce pride and pleasure)
- change habits (addressing environmental obstacles and skill deficits)
- monitor how mood is being affected by these changes
predictors of positive outcomes for CBT
- combined behavioural activation and thought challenging
- involving parents in the intervention
- efficacy goes down as severity increases
cultural CBT study
- comparing interventions for depression in non-WEIRD samples
- CBT, economic, integrated all led to reduced symptoms in low/middle income countries
- interpersonal trending toward effectiveness, but not reliable yet
antidepressant medications
- much more widely documented in adults, some don’t work at all/less in children (brain development/metabolism differences)