📚 🧠 Childhood Psychopathology
Overview
Brief Overview
This walks you through developmental context, externalizing vs. internalizing disorders,
diagnostic challenges and prevalence figures, and outlines major treatment approaches.
Key Points
Understand why age‑norms, remission, and limited self‑knowledge complicate
assessment.
Learn the main externalizing (e.g., ADHD, Conduct Disorder) and internalizing
(e.g., anxiety, depression) conditions.
Review UK prevalence statistics and the link between childhood and adult
psychopathology.
Get a snapshot of etiological factors and therapeutic options for each disorder.
Difficulties in Studying Childhood Psychopathology 🚸
Developmental context: problems must be evaluated against age‑appropriate
norms.
Spontaneous remission: many issues resolve as quickly as they appear.
Limited self‑knowledge: children’s immature insight hampers self‑reporting.
Domains of Childhood Psychopathology 📂
Externalizing Disorders
Externalizing disorders: outward‑directed behavior problems such as aggressiveness,
hyperactivity, non‑compliance, or impulsiveness.
Conduct Disorder
Attention Deficit Hyperactivity Disorder (ADHD)
Internalizing Disorders
, Internalizing disorders: inward‑looking, withdrawn behaviors that may reflect
depression, anxiety, or social withdrawal.
Childhood anxiety
Childhood depression
Diagnosis & Prevalence: General Issues 📊
Identification must consider normative age‑related behavior.
Diagnosis relies on the child’s communication ability.
Cultural norms influence what is deemed problematic.
Rapid developmental change can cause swift escalation of symptoms.
Childhood Psychopathology as a Precursor to Adult
Psychopathology 🔗
Persistence of the same disorder into adulthood.
Childhood disorder leads to general adverse adult outcomes.
Acts as a cognitive precursor to later problems.
Increases vulnerability to later‑life stressors.
Some disorders are transient, disappearing after childhood.
Prevalence Statistics (UK) 🇬🇧
Disorder Approx. Prevalence
Any diagnosable psychopathology 10–20 % (Phares, 2003)
ADHD (school‑age) ~5 %
Conduct Disorder (boys) 4–16 %
Conduct Disorder (girls) 1.2–9 %
Childhood anxiety (separation) 2–5 %
Specific phobias (8‑9 yr olds) 7 % (boys), 10 % (girls)
Childhood depression (adolescents) 25–28 % lifetime
Comorbidity is common (Office of National Statistics, 2004).
Children of lone parents are twice as likely to have mental health problems.
,Disruptive Behaviour Problems
Attention Deficit Hyperactivity Disorder (ADHD) ⚡
ADHD: a persistent pattern of inattention and/or hyperactivity‑impulsivity that
exceeds developmental expectations.
Typical presentation: mixed inattention & hyperactivity; sub‑types:
predominantly inattentive, predominantly hyperactive‑impulsive.
Comorbidity: ~50 % also meet criteria for Conduct Disorder (Hinshaw, 1987).
Prevalence: ~5 % of school‑age children; similar rates in preschoolers (Egger
et al., 2006).
Course: about half retain the diagnosis into adulthood (Kessler et al., 2006).
Sex differences: recent studies find no clear sex bias (Staller & Faraone, 2006).
Consequences
Temper outbursts, frustration, impaired academic achievement.
Family resentment, peer rejection, accidental injuries, difficulty making friends.
Aetiology
Biological Factors
Genetic: twin heritability ≈ 76 % (Faraone & Mick, 2010).
Brain abnormalities: ~3.2 % smaller overall brain volume; reduced frontal,
parietal, temporal, occipital regions (Durston et al., 2004).
Prenatal: maternal smoking/drinking linked to dopaminergic disruptions (Mick
et al., 2002; Milberger et al., 1997).
Environmental toxins: lead, nicotine exposure show experimental support
(Fung & Lau, 1989).
Psychological Factors
Parent‑child interactions: ADHD‑affected parents may be less effective;
authoritarian styles can exacerbate symptoms.
Theory of Mind deficits: impair planning and inhibition (Papadopolous et al.,
2005).
Conduct Disorder 🚨
Diagnosis & Categories
, Conduct Disorder: a pattern of behavior violating societal norms and the rights of
others, including aggression, property destruction, deceit, and serious rule violations.
Category Example
Aggressive behavior Physical fights, threats
Property violation Vandalism, arson
Deceitfulness Lying, theft
Rule violation Truancy, curfew breaches
Sub‑Types
Childhood‑onset (before age 10)
Adolescent‑onset (after age 10)
Oppositional Defiant Disorder (ODD) – milder form not meeting full CD
criteria.
Main Symptoms
Initiates aggression, disregards property, lies, lacks empathy.
Displays risk‑taking, irritability, impulsivity, temper tantrums.
Associated with early sexual activity, substance use.
More common in males (Zoccolillo, 1993).
Prevalence & Course
Boys: 4–16 %; Girls: 1.2–9 % (Loeber et al., 2000).
Median onset age: 11.6 years (Nock et al., 2006).
Predicts adult antisocial personality disorder, especially in low‑SES families
(Lahey et al., 2005).
Aetiology
Biological Factors
Genetic: twin and adoption studies indicate strong hereditary influence;
GABRA2 gene implicated (Dick et al., 2006).
Neurological deficits: executive functioning, verbal IQ, memory impairments
(Lynam & Henry, 2001); deficits often co‑occur with ADHD.
Prenatal: maternal smoking/drinking, malnutrition; confounded with SES and
genetics.
Psychological Factors
Overview
Brief Overview
This walks you through developmental context, externalizing vs. internalizing disorders,
diagnostic challenges and prevalence figures, and outlines major treatment approaches.
Key Points
Understand why age‑norms, remission, and limited self‑knowledge complicate
assessment.
Learn the main externalizing (e.g., ADHD, Conduct Disorder) and internalizing
(e.g., anxiety, depression) conditions.
Review UK prevalence statistics and the link between childhood and adult
psychopathology.
Get a snapshot of etiological factors and therapeutic options for each disorder.
Difficulties in Studying Childhood Psychopathology 🚸
Developmental context: problems must be evaluated against age‑appropriate
norms.
Spontaneous remission: many issues resolve as quickly as they appear.
Limited self‑knowledge: children’s immature insight hampers self‑reporting.
Domains of Childhood Psychopathology 📂
Externalizing Disorders
Externalizing disorders: outward‑directed behavior problems such as aggressiveness,
hyperactivity, non‑compliance, or impulsiveness.
Conduct Disorder
Attention Deficit Hyperactivity Disorder (ADHD)
Internalizing Disorders
, Internalizing disorders: inward‑looking, withdrawn behaviors that may reflect
depression, anxiety, or social withdrawal.
Childhood anxiety
Childhood depression
Diagnosis & Prevalence: General Issues 📊
Identification must consider normative age‑related behavior.
Diagnosis relies on the child’s communication ability.
Cultural norms influence what is deemed problematic.
Rapid developmental change can cause swift escalation of symptoms.
Childhood Psychopathology as a Precursor to Adult
Psychopathology 🔗
Persistence of the same disorder into adulthood.
Childhood disorder leads to general adverse adult outcomes.
Acts as a cognitive precursor to later problems.
Increases vulnerability to later‑life stressors.
Some disorders are transient, disappearing after childhood.
Prevalence Statistics (UK) 🇬🇧
Disorder Approx. Prevalence
Any diagnosable psychopathology 10–20 % (Phares, 2003)
ADHD (school‑age) ~5 %
Conduct Disorder (boys) 4–16 %
Conduct Disorder (girls) 1.2–9 %
Childhood anxiety (separation) 2–5 %
Specific phobias (8‑9 yr olds) 7 % (boys), 10 % (girls)
Childhood depression (adolescents) 25–28 % lifetime
Comorbidity is common (Office of National Statistics, 2004).
Children of lone parents are twice as likely to have mental health problems.
,Disruptive Behaviour Problems
Attention Deficit Hyperactivity Disorder (ADHD) ⚡
ADHD: a persistent pattern of inattention and/or hyperactivity‑impulsivity that
exceeds developmental expectations.
Typical presentation: mixed inattention & hyperactivity; sub‑types:
predominantly inattentive, predominantly hyperactive‑impulsive.
Comorbidity: ~50 % also meet criteria for Conduct Disorder (Hinshaw, 1987).
Prevalence: ~5 % of school‑age children; similar rates in preschoolers (Egger
et al., 2006).
Course: about half retain the diagnosis into adulthood (Kessler et al., 2006).
Sex differences: recent studies find no clear sex bias (Staller & Faraone, 2006).
Consequences
Temper outbursts, frustration, impaired academic achievement.
Family resentment, peer rejection, accidental injuries, difficulty making friends.
Aetiology
Biological Factors
Genetic: twin heritability ≈ 76 % (Faraone & Mick, 2010).
Brain abnormalities: ~3.2 % smaller overall brain volume; reduced frontal,
parietal, temporal, occipital regions (Durston et al., 2004).
Prenatal: maternal smoking/drinking linked to dopaminergic disruptions (Mick
et al., 2002; Milberger et al., 1997).
Environmental toxins: lead, nicotine exposure show experimental support
(Fung & Lau, 1989).
Psychological Factors
Parent‑child interactions: ADHD‑affected parents may be less effective;
authoritarian styles can exacerbate symptoms.
Theory of Mind deficits: impair planning and inhibition (Papadopolous et al.,
2005).
Conduct Disorder 🚨
Diagnosis & Categories
, Conduct Disorder: a pattern of behavior violating societal norms and the rights of
others, including aggression, property destruction, deceit, and serious rule violations.
Category Example
Aggressive behavior Physical fights, threats
Property violation Vandalism, arson
Deceitfulness Lying, theft
Rule violation Truancy, curfew breaches
Sub‑Types
Childhood‑onset (before age 10)
Adolescent‑onset (after age 10)
Oppositional Defiant Disorder (ODD) – milder form not meeting full CD
criteria.
Main Symptoms
Initiates aggression, disregards property, lies, lacks empathy.
Displays risk‑taking, irritability, impulsivity, temper tantrums.
Associated with early sexual activity, substance use.
More common in males (Zoccolillo, 1993).
Prevalence & Course
Boys: 4–16 %; Girls: 1.2–9 % (Loeber et al., 2000).
Median onset age: 11.6 years (Nock et al., 2006).
Predicts adult antisocial personality disorder, especially in low‑SES families
(Lahey et al., 2005).
Aetiology
Biological Factors
Genetic: twin and adoption studies indicate strong hereditary influence;
GABRA2 gene implicated (Dick et al., 2006).
Neurological deficits: executive functioning, verbal IQ, memory impairments
(Lynam & Henry, 2001); deficits often co‑occur with ADHD.
Prenatal: maternal smoking/drinking, malnutrition; confounded with SES and
genetics.
Psychological Factors
