A number of models developed in the adult psychopathology literature (i.e., L. A. Clark & D. Watson, 1991) have asserted that low levels of positive emotionality (PE) are predisposing factors or precursors for depression and represent a form of temperamental risk for depression. Further support for this claim would derive from evidence linking low PE to known indicators of risk for depression. The authors examined the association between temperamental emotionality in young children and parental mood disorders. One hundred unselected preschool-aged children completed a battery of emotion-eliciting tasks tapping aspects of PE, negative emotionality (NE), and behavioral inhibition (BI). Parental psychopathology was assessed with semistructured diagnostic interviews. Low PE in children was associated with maternal, but not paternal, mood disorder. The low PE-maternal depression link was relatively specific, as there were few associations between low PE and other forms of parental psychopathology or between NE and BI and parental mood disorders.
A key component of temperament models is the presumed temporal stability of temperament traits. Although a substantial literature using parent report measures has addressed this claim, very few investigations have examined the stability of temperament using alternative measurement strategies, particularly those that involve direct assessment of emotional expressions. This study reports on the relative stability and heterotypic continuity of temperament traits measured via laboratory tasks and maternal report in a sample of children assessed at ages 3, 5, and 7, focusing on Positive Emotionality and Negative Emotionality. Relative stability of Positive Emotionality and Negative Emotionality traits ranged from moderate to high for laboratory and maternal report measures. Measures of emotional expressions exhibited levels of stability comparable to or higher than traits defined by other behavioral patterns (e.g., sociability and engagement).
A dominant paradigm in psychopathology research proposes that individual differences in personality are centrally involved in the origins and manifestations of psychopathology, and structural models of personality and psychopathology have been extremely useful in helping to organize associations among many traits and disorders. However, these models merely describe patterns of covariation; they do not explain the processes by which these patterns emerge. We argue that the field is stagnated, as it is overly focused on the demonstration of concurrent associations and on confirming a spectrum model that proposes traits and disorders are manifestations of the same underlying constructs. We contend that if the field is to move toward an understanding of causal processes, it must integrate knowledge and principles of personality development and developmental psychopathology. To begin this integration, we review (1) normative trends in personality change, (2) age-related changes in the prevalence of disorders, and (3) the impact of onset and chronicity on the severity of disorders. We propose several developmental processes that may contribute to the co-development of personality and psychopathology. We then present novel empirical findings to illustrate how a developmental perspective on traits and disorders can inform new hypotheses, and propose principles and hypotheses that should guide future research.
Researchers and clinicians have long hypothesized that there are temperamental vulnerabilities to depressive disorders. Despite the fact that individual differences in temperament should be evident in early childhood, most studies have focused on older youth and adults. We hypothesized that if early childhood temperament is a risk factor for depressive disorders, it should be associated with better-established risk markers, such parental depression. Hence, we examined the associations of laboratory-assessed positive emotionality (PE), negative emotionality (NE), and behavioral inhibition (BI) with semi-structured interview-based diagnoses of parental depressive disorders in a community sample of 536 three-year old children. Children with higher levels of NE and BI had higher probabilities of having a depressed parent. However, both main effects were qualified by interactions with child PE. At high and moderate, but not low, levels of child PE, greater NE and BI were associated with higher rates of parental depression. Conversely, at low, but not high and moderate, levels of child NE, low PE was associated with a higher rate of parental depression. Child temperament was not associated with parental anxiety and substance use disorders. These findings indicate that laboratory-assessed temperament in young children is associated with parental depressive disorders, however the relations are complex and it is important to consider interactions between temperament dimensions rather than focusing exclusively on main effects.
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