A developing body of research suggests that there are few sex differences in the rate and severity of problem behavior in early childhood, but clear sex differences emerge at about 4 years of age. The authors explore 2 hypotheses to further the understanding of emerging sex differences in problem behavior across the first 5 years of life. The first posits that the change in girls' problem behavior from infancy to school entry represents a channeling of early problem behavior into predominantly internalizing problems as a result of socialization. The second hypothesis is that the change in girls' early problem behavior during the preschool period results from the more rapid biological, cognitive, and social-emotional development of girls relative to boys. The authors review research on the influence of parents, teachers, and peers on girls' behavior from infancy to preschool regarding the first hypothesis, whereas they review studies of sex differences in developmental processes to test the second. They find moderate support for both hypotheses and present a comprehensive theory of girls' developmental psychopathology that integrates social and developmental influences.
Developmental sequences in disruptive behavior from childhood to adolescence are traced retrospectively and prospectively in two community samples of boys. Three developmental pathways are distinguished: (a) an early authority conflict pathway, consisting in sequence of stubborn behavior, defiance, and authority avoidance; (b) a covert pathway, consisting of minor covert behaviors, property damage, and moderate to serious forms of delinquency; and (c) an overt pathway, consisting of aggression, fighting, and violence. The overlap among the three disruptive pathways is examined. Those boys who escalated in the overt pathway were more likely to escalate in the covert pathway than boys escalating in the covert pathway showing an escalation in the overt pathway. Escalation in the authority conflict pathway was not associated with escalation in either the overt or the covert pathways. Boys' rate of self-reported delinquency was highest for those in triple pathways (covert-overt-authority conflict) or in certain dual pathways (covert-overt, covert-authority conflict). However, by age 16 the highest rate of offending was displayed by those in the triple pathways. The rate of violent offenses was also highest for those in the triple pathways and for those in the overt and covert pathways. Results from the rate for court petitions largely supported these findings. Lowest rates of offending were observed for boys in the overt and authority conflict pathways. Implications are discussed for clinical practice and future research.
Despite previous research indicating that early negative child behavior and the quality of the parentchild relationship are predictive of later externalizing problems, few investigators have attempted to trace these antecedents back to infancy. In a sample of 100 infants from low-income families, it was possible to identify developmental sequences leading from infant persistence and lack of maternal responsiveness to later child disruptive, aggressive child behavior at ages 2 and 3. Gender differences were found with respect to the range and type of variables that showed continuity in predicting disruptive behavior. For boys, salient predictors of age 2 and age 3 externalizing behavior were maternal unresponsiveness, infant attention-seeking, aggression, and noncompliance, whereas for girls, infant noncompliance was related to both age 3 externalizing and internalizing problems.
Background
The best-fitting model of the structure of common psychopathology often includes a general factor on which all dimensions of psychopathology load. Such a general factor would be important if it reflects etiologies and mechanisms shared by all dimensions of psychopathology. Nonetheless, a viable alternative explanation is that the general factor is partly or wholly a result of common method variance or other systematic measurement biases.
Methods
To test this alternative explanation, we extracted general, externalizing, and internalizing factor scores using mother-reported symptoms across 5–11 years of age in confirmatory factor analyses of data from a representative longitudinal study of 2,450 girls. Independent associations between the three psychopathology factor scores and teacher-reported criterion variables were estimated in multiple regression, controlling intelligence and demographic covariates.
Results
The model including the general factor fit significantly better than a correlated two-factor (internalizing/externalizing) model. The general factor was robustly and independently associated with all measures of teacher reported school functioning concurrently during childhood and prospectively during adolescence.
Conclusions
These findings weaken the hypothesis that the general factor of psychopathology in childhood is solely a measurement artifact and support further research on the substantive meaning of the general factor.
This study examined risk factors from infancy associated with the development of preschool disruptive behavior problems across child, parent, and sociodemographic domains. Risk factors that consistently were associated with the prediction of disruptive behavior at age 5 years included disorganized attachment classification at 12 months, and maternal personality risk and child-rearing disagreements during the second year. In addition, infants with disorganized attachment status at 12 months whose mothers perceived them as difficult in the second year showed significantly higher aggressive problems at age 5 years than those with only one of the two risk factors present. When pathways leading to clinically elevated aggression at age 5 were explored, infant disorganized attachment status, maternal personality risk, and child-rearing disagreements demonstrated equivalent predictive validity as child aggression assessed at age 3 years.
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