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M Zoccolillo

Publications and source records attributed to M Zoccolillo.

18 recordsLinked to original sources
PubMed2001

Predicting girls' conduct disorder in adolescence from childhood trajectories of disruptive behaviors.

OBJECTIVE: To examine girls' developmental trajectories of disruptive behaviors during the elementary school years and to predict conduct disorder symptoms and diagnosis in adolescence with trajectories of these behaviors. METHOD: The sample was 820 girls from the province of Quebec followed over 10 years (1986-1996). A semiparametric mixture model was used to describe girls' developmental trajectories of teacher-rated disruptive behaviors between the ages of 6 and 12 years. The trajectories were used to predict conduct disorder symptoms and diagnosis when the girls were on average 15.7 years. RESULTS: Four groups of girls following trajectories with distinct levels of disruptive behaviors were identified: a low, medium, medium-high, and high trajectory. Prediction with the trajectories indicated that girls on the medium, medium-high, and high trajectories reported a significantly higher number of conduct disorder symptoms in adolescence. However, only the girls on the medium-high and high trajectories were at significantly higher risk to meet DSM-III-R criteria for conduct disorder, compared with girls in the low group (odds ratio: 4.46). More than two thirds of the girls with conduct disorder were in the medium or higher-level trajectories. CONCLUSION: The results suggest that there is an early-onset type of conduct disorder in girls.

Adolescent↗
PubMed2001

Prevalence of psychiatric diagnoses and the role of perceived impairment: findings from an adolescent community sample.

The present study examined psychiatric functioning in a community sample of adolescents aged 14 to 17 years (average age of 15 years). We administered the Diagnostic Interview Schedule for Children-2.25 (DISC-2.25) to 1,201 adolescents and their mothers to obtain prevalence estimates of DSM-III-R disorders and the amount of perceived impairment associated with these disorders. While adolescent females reported a significantly higher prevalence of psychiatric disorders than males (15.5% vs. 8.5%), mothers indicated no sex difference. Compared with adolescent males, females had significantly higher rates of internalizing, anxiety. and depressive disorders. In contrast, the prevalence of externalizing disorders was significantly higher among adolescent males. The inclusion of an impairment criterion had a significant impact in reducing the prevalence rates of overall psychiatric disorders. This reduction occurred mainly through impairment's effects on internalizing disorders, specifically anxiety-based disorders (i.e., simple and social phobia). Given the limited research on the effect of impairment on the prevalence of adolescent psychiatric disorders, future work in this area seems warranted.

Adolescent↗
PubMed2001

Modeling interinformant agreement in the absence of a "gold standard".

Epidemiological surveys of child and adolescent mental disorders often rely on multiple informants to get a complete diagnostic picture. A consistent finding in the literature is that different informants often do not identify the same children as being disordered. However, because current strategies for estimating interinformant agreement often involve categorizing children using less than perfectly sensitive and/or specific symptoms, biased estimates of interinformant agreement are likely. The aim of this report was to illustrate how latent class analysis (LCA) can be used to model interinformant agreement in the absence of a "gold standard". The proposed model consists of informant-specific latent variables each made up of two or more latent classes corresponding to different levels of symptomatology. Unlike most previous applications of LCA this model allows us to model the extent to which the prevalence of the disorder is the same across informants; and, in addition, the association between informants. The data set comes from a prospective longitudinal study of 2,264 children from Quebec (1,155 boys and 1,109 girls). In grade 2, teachers and mothers independently rated each child on three physical aggression behavior symptoms. We satisfactorily accounted for the cross-classification of the behavior symptoms by postulating the existence of two latent variables--one for each informant each made up of three latent classes of children: low-, medium-, and high-aggressive. The results showed that the prevalence of low- and medium-aggressive children in the population differed from teacher to mother, but that the prevalence of high-aggressive children did not. We found that the association between teacher and mother was large and positive and did not vary according to the child's physical aggression state or gender; in contrast, the association between physical aggression and gender was not the same for mother and teacher. Limitations and other potential applications of the proposed model are discussed.

Adult↗
PubMed1999

Problem drug and alcohol use in a community sample of adolescents.

OBJECTIVE: Epidemiological studies of illegal drug use in adolescents have examined frequency of drug use; a few have examined diagnoses or symptoms of drug abuse or dependence. This study examined problem use of illegal drugs, about which very little is known. METHOD: Adolescents (879 boys and 929 girls), mean age of 15.7 years, representative of the province of Québec, Canada, were asked about problem use of alcohol and illegal drugs. RESULTS: Almost one third had used illegal drugs more than 5 times. Of this group, more than 70% reported going to school high on drugs, and the majority reported playing sports while high and using drugs in the morning. In these drugs users, 94% of the boys and 85% of the girls reported at least 1 problem and two thirds of the boys and more than half of the girls reported 3 or more problems from illegal drugs. Marijuana was used by almost all subjects at the time of maximal drug use; hallucinogens were the second most commonly used drug. Alcohol was used more frequently than illegal drugs, but problem use was less common. CONCLUSIONS: Problem drug use is the norm among the large minority who use illegal drugs more than a few times, and drug use is commonly incorporated into 2 major routine activities of teenagers--school and sports.

Adolescent↗
PubMed1999

[Alcoholic father, adolescent drug abuse and protective factors].

OBJECTIVES: To compare the children of alcoholic fathers who do not develop alcohol or drug problems in adolescence (that is, resilient children) to those who do, focusing on characteristics of personality and family. Various behavioural traits are examined as resilience factors, as are certain educational practices of the parents. METHOD: Resilience factors were studied throughout childhood, from age 6 to 12 years. The presence or absence of alcohol or drug problems was assessed at the age of 15 or 16 years. RESULTS: Close to 1000 children of both sexes participated in the study. As expected, paternal alcoholism was an important risk factor in the development of substance abuse problems in adolescence. The risk, however, diminishes with personality traits such as low thrill-seeking behaviour and a propensity for inhibition. These traits cannot be considered resilience factors, however, because their effect is as present in children of nonalcoholic fathers as in children of alcoholic fathers. Parental supervision proves to be a protective influence and was found to reduce the risk of substance abuse in children of alcoholic fathers. CONCLUSION: These results indicate that, above and beyond personality variables, the presence of an alcoholic father constitutes a high risk factor for adolescent drug addiction. Nevertheless, parental supervision may attenuate this risk and is therefore an important means of intervention.

Adolescent↗
PubMed1997

Conduct disorder, substance dependence, and adolescent motherhood.

Of 26 teenage mothers in a nonclinical sample, one-third were found to have a diagnosis of conduct disorder; of these, two-thirds were also diagnosed with substance abuse or dependence. Conduct disorder as a risk factor for adolescent pregnancy and substance use is discussed, as are the implications for preventive intervention.

Adolescent↗
PubMed1997

Disruptive behavior disorders.

Disruptive behavior disorders present grave complications to normal childhood development. Their presence is frequently associated with additional psychiatric disorders. The hallmark features of the disruptive behavior disorders range from noncompliance to aggressive hostility toward authorities or peers. Oppositional defiant disorder, conduct disorder, and attention-deficit hyperactivity disorder are associated with dysfunctional parenting styles and other environmental risks. Temperament and psychobiological mechanisms also play roles in the expression of disruptive behavior. Longitudinal research is providing a means to disentangle etiologic from mediating factors. The origins of developmental pathways to adult maladjustment are apparent in preschool behavior. Unfortunately, nearly all of our assumptions about behavior problems have been based on the study of boys. While many social outcomes for disruptive girls and boys are similar, pregnancy and parenting present a distinct challenge to the adolescent mother, to her children, and to society at large.

Adolescent↗
PubMed1996

DSM-III-R and DSM-III criteria for conduct disorder in preadolescent girls: specific but insensitive.

OBJECTIVE: To determine whether DSM-III and DSM-III-R criteria for conduct disorder identify girls in the general population with early-onset, persistent, and pervasive antisocial behavior. METHOD: 2,251 girls, representative of all girls entering kindergarten in Qúebec, were assessed using parent and teacher ratings of antisocial behavior; a subsample was then rated for the next 6 years (ages 7 to 12) by parent and teacher. At age 10 years, the girls who been rated as antisocial in kindergarten, along with a random sample of those not rated as antisocial, were assessed for DSM-III and DSM-III-R diagnoses of conduct and oppositional defiant disorder using a structured psychiatric interview (Diagnostic Interview Schedule for Children) administered to the parent, teacher, and/or child (n = 381). RESULTS: Of the girls with early-onset, persistent, and pervasive antisocial behavior, 3% met DSM-III-R criteria and 22% met DSM-III criteria for conduct disorder. Conduct disorder was not diagnosed at all in girls who had not been initially rated as antisocial in kindergarten. Lowering the threshold for a DSM-III-R conduct disorder diagnosis to two symptoms and adding the criterion of violation of rules increased the rate of diagnosis to 35% in the pervasively antisocial girls but only to 1% in girls who did not have persistent antisocial behavior. CONCLUSIONS: DSM-III-R criteria for conduct disorder do not identify most preadolescent girls with early-onset, pervasive, and persistent antisocial behavior. Modifications to the DSM-III-R criteria resulted in increased sensitivity without a loss of specificity.

Age of Onset↗
PubMed1996

Psychopathology in adolescent mothers and its effects on mother-infant interactions: a pilot study.

OBJECTIVE: This study assessed adolescent maternal psychopathology and its relation to the quality of mother-infant interactions. METHOD: Twenty-one mother-infant pairs recruited from an adolescent medicine clinic were assessed for socio-demographic background, psychosocial adversity, conduct disorder, alcohol or substance dependence, and depression. Dyads were videotaped during free play and their interactions rated using the Crittenden Child-Adult Relational Experimental (CARE) Index. RESULTS: A large proportion of mothers exhibited psychopathology. Severity of maternal depression correlated positively with maternal controllingness and infant difficulty. Severity of maternal antisocial history correlated positively with maternal unresponsiveness and infant passivity. CONCLUSION: Though preliminary, this work suggests that adolescent maternal depression and antisocial history have different effects on the quality of mother-infant interactions. Researchers and clinicians interested in adolescent parenting should consider psychopathology as a contributing variable to the quality of mother-infant interactions.

Adolescent↗
PubMed1992

The outcome of childhood conduct disorder: implications for defining adult personality disorder and conduct disorder.

The effect of conduct disorder on adult social functioning in the areas of work, sexual/love relationships, social relationships and criminality was studied in a sample of young adults who spent much of their childhoods in group-cottage children's homes and an inner-city comparison group. Most subjects with conduct disorder had pervasive (but not necessarily severe) social difficulties compared to peers without conduct disorder. Less than half of this group met DSM-III adult criteria for antisocial personality disorder and just over half were given a diagnosis of personality disorder on interviewer clinical ratings. A latent class model that used both the retrospective and contemporaneous indicators of conduct disorder confirmed the very high continuity with adult social difficulties. Current diagnoses did not adequately describe this group and conduct disorder appeared to be an almost necessary condition for multiple social disability in adults in these samples.

Adolescent↗
PubMed1992

Co-occurrence of conduct disorder and its adult outcomes with depressive and anxiety disorders: a review.

Child and adult general population studies of psychiatric disorder were systematically reviewed for data on the co-occurrence of conduct disorder and its adult outcomes with depressive and anxiety disorders. For both sexes, both depressive and anxiety disorders co-occurred with conduct disorder (and its adult outcomes) far more than expected by chance in childhood, adolescence, and adulthood. Most women with conduct disorder and an antisocial adult outcome also developed a depressive or anxiety disorder by early adulthood. For both sexes, increasing severity of antisocial behavior was associated with an increasing risk of an emotional disorder. Age and sex affected the rates of co-occurrence. Possible reasons for this co-occurrence and implications for classification and the nature of conduct disorder are discussed.

Adolescent↗
PubMed1991

Characteristics and outcome of hospitalized adolescent girls with conduct disorder.

Fifty-five adolescent girls with conduct disorder from a psychiatric hospital were examined with a structured interview schedule and then reevaluated 2 to 4 years later. The majority also had depressive or anxiety disorders. The criteria used for conduct disorder were less weighted toward violent crime and differed from the criteria in DSM-III-R. Their outcome was poor; 6% had died a violent death, the majority had dropped out of school, one-third were pregnant before the age of 17, half were rearrested, and many suffered traumatic injuries. Diagnoses of depression or anxiety disorders at the index admission were not associated with a better outcome.

Adolescent↗
PubMed1988

The assessment of lifetime psychopathology: a comparison of two interviewing styles.

A structured respondent-based version of the SADS-L interview was compared with a semi-structured investigator-based version of the same interview in terms of efficiency in assessing lifetime psychopathology. There was substantial agreement across most Research Diagnostic Criteria (RDC) categories, but there was less agreement on the rating of symptoms. The implications of these similarities and differences between the techniques are discussed.

Adult↗
PubMedDate not supplied

Depression among medical students.

304 first- and second-year medical students were prospectively assessed for depression with a monthly Beck Depression Inventory (BDI). Students scoring above nine on the BDI and a control group were then interviewed with the NIMH Diagnostic Interview Schedule. The incidence of major depression or probable major depression by DSM-III criteria during the first two years of medical school was 12%. The lifetime prevalence was 15%, three times greater than the rate in the general population. An episode of depression prior to medical school was much more common among the depressed students (69 vs. 8%, P less than 0.001) as was a family history of treated depression (46 vs. 21%, P less than 0.025). The elevated rate of depression during medical school does not appear to be a result of the medical school experience alone. Rather, it suggests a positive bias of unknown nature in the selection of students predisposed to depression.

Adult↗