Showing papers in "Development and Psychopathology in 1990"
TL;DR: This paper reviewed the research on resilience in order to delineate its significance and potential for understanding normal development and concluded that children who experience chronic adversity fare better or recover more successfully when they have a positive relationship with a competent adult, they are good learners and problem-solvers, engaging to other people, and they have areas of competence and perceived efficacy valued by self or society.
Abstract: This article reviews the research on resilience in order to delineate its significance and potential for understanding normal development. Resilience refers to the process of, capacity for, or outcome of successful adaptation despite challenging or threatening circumstances. Three resilience phenomena are reviewed: (a) good outcomes in high-risk children, (b) sustained competence in children under stress, and (c) recovery from trauma. It is concluded that human psychological development is highly buffered and that long-lasting consequences of adversity usually are associated with either organic damage or severe interference in the normative protective processes embedded in the caregiving system. Children who experience chronic adversity fare better or recover more successfully when they have a positive relationship with a competent adult, they are good learners and problem-solvers, they are engaging to other people, and they have areas of competence and perceived efficacy valued by self or society. Future studies of resilience will need to focus on processes that facilitate adaptation. Such studies have the potential to illuminate the range and self-righting properties of, constraints on, and linkages among different aspects of cognitive, emotional, and social development.
2,970 citations
TL;DR: It is suggested that attachment organization may be an important determinant of how individuals with serious psychopathological disorders approach attachment figures.
Abstract: Individual differences in attachment organization among adults with serious psychopathological disorders were related to strategies of treatment use. Forty young adults with serious psychopathological disorders were administered the Adult Attachment Interview (George, Kaplan, & Main, 1984), and their clinicians completed ratings of treatment use. Attachment organization was assessed using the Attachment Q-set (Kobak, 1989), yielding ratings of security/anxiety and avoidance/preoccupation. In preliminary analyses, diagnosis was found to be related to security, with greater security associated with affective rather than thought disorders. Gender was related to avoidance/preoccupation, with males having stronger avoidant tendencies than females. The effects of diagnosis and gender were partialled out of subsequent analyses. As predicted, greater security was associated with more compliance with treatment, as rated by clinicians. Stronger avoidant tendencies were associated with greater rejection of treatment providers, less self-disclosure, and poorer use of treatment. These findings suggest that attachment organization may be an important determinant of how individuals with serious psychopathological disorders approach attachment figures.
348 citations
TL;DR: Aggression observed in 2-year-old children of well and depressed mothers was examined in relation to problem behaviors at ages 5-6 by as mentioned in this paper, where both normative and maladaptive forms of toddler aggression were identified.
Abstract: Aggression observed in 2-year-old children of well and depressed mothers was examined in relation to problem behaviors at ages 5–6. Both normative (e.g., object struggles, rough play) and maladaptive (e.g., dysregulated, out-of-control behavior) forms of toddler aggression were identified. Dysregulated aggression predicted (a) externalizing problems reported by mothers when children were 5 years old, and (b) children's reports of difficulties during a structured psychiatric interview at age 6. Problems were more frequent and continuity patterns more evident in children of depressed, than well, mothers. Early maladaptive aggression was a better predictor of later externalizing, than internalizing problems. Childrearing practices of mothers of toddlers also appeared to contribute to later outcomes: negative influences were evident but protective patterns were present as well. Depressed mothers who used proactive childrearing approaches (e.g., anticipating the child's point of view; exerting modulated, respectful control; providing structure and organization during play environment) had children who showed fewer externalizing problems 3 years later.
281 citations
TL;DR: The authors investigated the interaction between affect and language through storytelling and found that the Williams syndrome subjects tell coherent and complex narratives that make extensive use of affective prosody, whereas the Down subjects are infused with lexically encoded narrative evaluative devices that enrich the referential content of the stories.
Abstract: The study of clearly identifiable patterns of atypical development can inform normal development in significant ways. Delayed or deviant development puts in high relief not only the sequence of development but also the individual components. This article presents the results of studies that compare adolescents with Williams syndrome, a rare metabolic neurodevelopmental disorder resulting in mental retardation, with cognitively matched adolescents with Down syndrome. We investigate the interaction between affect and language through storytelling. In contrast to the adolescents with Down syndrome, the Williams syndrome subjects tell coherent and complex narratives that make extensive use of affective prosody. Furthermore, stories from the Williams but not the Down subjects are infused with lexically encoded narrative evaluative devices that enrich the referential content of the stories. This contrast in expressivity between two matched atypical groups provides an unusual perspective on the underlying structure of the social cognitive domain.
228 citations
TL;DR: In this paper, the reciprocal enhancing nature of studies of normal and pathological development and the fruitfulness of weaving back and forth between studies of normality and disturbance for understanding important aspects of development are discussed.
Abstract: When psychopathology is defined as developmental deviation, its study necessarily involves a wedding of research on the normal and the pathological. In such an endeavor, understanding of normal processes is enhanced, because critical normative issues can only be defined in terms of their implications when development goes awry and because disordered behavior often brings into sharp relief the nature of basic developmental phenomena. At the same time, such work is critical to defining general principles of development, which apply to normal and abnormal alike. In this article, examples are provided of the reciprocally enhancing nature of studies of normal and pathological development and of the fruitfulness of weaving back and forth between studies of normality and disturbance for understanding important aspects of development. Examples include a discussion of attachment and dependency and the origins of Attention Deficit/Hyperactivity Disorder. It is concluded that developmental psychopathology may make its greatest contribution in the endeavor to understand development of individuals.
207 citations
TL;DR: In this article, the essential components of self-experience, the kind of psychological architecture required to construct a self, rather than on the configurations or qualities of individual “selves,” are examined.
Abstract: This article examines what it means to have a self. My focus is on the essential components of self-experience, the kind of psychological architecture required to construct a self, rather than on the configurations or qualities of individual “selves.” I adopt a developmental perspective and indicate how early childhood autism may afford unique insights into the role of perceptual-affective and interpersonal experience in determining the normal child's developing awareness of self.
176 citations
TL;DR: In this article, the authors identify environmental factors that differ for young siblings and assess associations between such nonshared factors and differences in the older siblings' outcome in two domains: internalizing and externalizing behavior problems.
Abstract: One of the most dramatic findings from quantitative genetic research is that environmental influences shared by siblings in a family do not make the siblings similar in terms of psychopathology. Sibling resemblance for psychopathology appears to be genetic rather than environmental in origin; environmental influences that affect the development of psychopathology must be nonshared and make children in the same family different rather than similar. This study sets out to identify environmental factors that differ for young siblings and to assess associations between such nonshared factors and differences in the older siblings' outcome in two domains: internalizing and externalizing behavior problems. Maternal interview and observations of differential maternal and sibling behavior were compared within 67 sibling dyads (younger and older siblings aged 4 and 7 years, respectively, on average), and differential experiences were related to the adjustment of the older sibling, as assessed by mother and teacher. Differential maternal behavior appeared to be particularly important as a predictor of adjustment problems. Older siblings showed internalizing problems in families in which mothers were less affectionate to the older than to the younger sibling. Greater maternal control toward the older than the younger sibling predicted both internalizing and externalizing problems. Differential maternal behavior explained 34% of the variance of internalizing behavior and 27% of the variance of externalizing behavior problems, independent of variance explained by family structure variables. Although the sample was unselected for psychopathology and was too small to permit analyses of the diagnosable extremes of internalizing and externalizing dimensions, these results are encouraging in relation to the goal of identifying systematic sources of nonshared environment that affect the development of psychopathology.
153 citations
TL;DR: This paper found that preschool-aged children with significant externalizing behavior problems are more likely to have insecure attachment relationships than nonproblem peers, as measured by separation/ reunion behavior at the time of clinic referral.
Abstract: This study tested the hypothesis that preschool-aged children with significant externalizing behavior problems are more likely to have insecure attachment relationships than nonproblem peers, as measured by separation/ reunion behavior at the time of clinic referral. Fifty children (ages 3–6) and their mothers participated: 25 referred to a child psychiatry clinic for one of the DSM-III-R Disruptive Behavior Disorders, and 25 matched comparison children without behavior problems. Using two new attachment coding systems for children of this age, we found that 84% of the children in the clinic group were classified as insecure, whereas only 28% of the comparison group were so classified (p <.001). Clinic children were also found more frequently to protest their mother's departure and to search for her more often during the separation. The implications of these results for the validity of separation/reunion behavior as an index of attachment at this age are discussed, as well as the methodological and conceptual problems that complicate our study of the link between attachment and behavior disorder.
149 citations
TL;DR: Among 4th-6th-grade urban children who had experienced significant life stress, convergent sources of evidence about current adjustment identified demographically matched samples of 37 stress-affected (SA) and 40 stress-resilient (SR) children as mentioned in this paper.
Abstract: This article describes the Rochester Child Resilience Project (RCRP) and summarizes findings based on its initial year of operation. Among 4th-6th-grade urban children who had experienced significant life stress, convergent sources of evidence about current adjustment identified demographically matched samples of 37 stress-affected (SA) and 40 stress-resilient (SR) children. These two groups were compared on 11 test measures designed to expand the nomological definitional net for the concept of childhood resilience. Additionally, separate in-depth individual interviews were conducted with children and primary caregivers. Both test and interview responses significantly differentiated the groups in the predicted directions. Children's group status (SR vs. SA) was predictable on the basis of discriminant function analysis involving five test measures, blind ratings done both for the parent and child interviews, and hierarchical regression analyses reflecting major domains of the parent interview.
131 citations
TL;DR: In this paper, the impact of environmental risk on toddlers' cognitive and linguistic development was investigated in a longitudinal study of 78 high-risk families, where the risk factors examined were family social status, mother's psychosocial functioning, and quality of dyadic involvement at 1 year of age (including measures of mother-infant interaction and infant-mother attachment security).
Abstract: The impact of environmental risk on toddlers' cognitive and linguistic development was investigated in a longitudinal study of 78 high-risk families. The risk factors examined were family social status, mother's psychosocial functioning, and quality of dyadic involvement at 1 year of age (including measures of mother-infant interaction and infant-mother attachment security). Child outcome measures included the Bayley MDI (at 24 months) and the Preschool Language Scale (at 36 months). The data indicate that dyadic involvement was an important mediator in the relation between environmental risk and subsequent child competence. Specific relations among early interactive experiences, infant attachment security, and subsequent cognitive and linguistic gain were examined within a framework of risk and protective factors. The results suggest that secure attachment may operate as a protective factor, but only among the more extreme cases in this exclusively high-risk sample.
129 citations
TL;DR: In this paper, the authors examined the phenomenological experience of depression in a normative sample of young, middle-school adolescents and found that depression is experienced as a blend of sadness and anger, where anger can be directed toward either the self or others.
Abstract: The present study sought to examine two issues related to the phenomenological experience of depression in a normative sample of young, middle-school adolescents. The first hypothesis was that self-reported depressed affect would be highly related to low global self-worth. The second hypothesis was that depression is experienced as a blend of sadness and anger, where anger can be directed toward either the self or others. The findings revealed a strong correlation (r = .81) between global self-worth and affect (along a continuum of cheerful to depressed). With regard to the second issue, depression is clearly experienced by adolescents as a blend of affects. Eighty percent reported that depression represents a mix of sadness and anger. In addition, the vast majority reported that the anger is directed toward others, either as the only target or in conjunction with anger toward the self. Findings also revealed that the primary causes of depression involve actions of others against the self, thereby making the anger component realistic. Discussion focused on the role of self-deprecatory ideation in depression and on the issue of the comorbidity of internalizing and externalizing symptoms manifest in depression.
TL;DR: The effectiveness of imitating an autistic child's actions as a means for promoting social responsiveness and creative toy play was explored in this article, where 15 autistic children and their mothers were assessed before and after a 2-week period during which they engaged in imitative play for 20 minutes per day.
Abstract: The effectiveness of imitating an autistic child's actions as a means for promoting social responsiveness and creative toy play was explored. Fifteen autistic children between the ages of 2 and 6 years and their mothers were assessed before and after a 2-week period during which they engaged in imitative play for 20 minutes per day. At the pre-intervention assessment, autistic children's gaze at mother's face was of longer duration, and their toy play was more creative during imitative play than during a free play session. At the post-intervention assessment, significant cumulative increases in duration of gaze at mother's face and creative toy play were found. Children's positive behavior changes were not found to be a function of developmental level of imitative ability, play skills, Vineland social age, IQ, or severity of autistic symptoms. Instead, the majority of children showed positive responses to this interactive strategy, regardless of these individual characteristics.
TL;DR: In this paper, a series of multivariate statistical analyses was used to integrate all the findings so far reported on in this sample into a biographical model of the developmental pathways from childhood loss of mother to current depression.
Abstract: Two previous reports on a female population sample in Outer London, UK, had identified certain environmental experiences–such as lack of adequate replacement care after parental loss in childhood, premarital pregnancy, and low social class and poor emotional support in adulthood–as key factors intervening between childhood loss of parent and depression in adulthood. A third paper introduced a measure of the cognitive set of situational helplessness-mastery which was associated, on the one hand, with current depression and, on the other, with loss of mother in childhood. This article examines the relationship between these other factors and situational helplessness both in childhood and in adulthood. Most are highly associated with the cognitive set, but the relationship between childhood helplessness and loss of mother appears to be differentially mediated according to whether the loss was by death or separation. A series of multivariate statistical analyses aims to integrate all the findings so far reported on in this sample into a biographical model of the developmental pathways from childhood loss of mother to current depression.
TL;DR: In this article, a time-sample technique was used to collect frequency of gaze directed at staff, at task, and elsewhere (at other) as subjects interacted with familiar staff and engaged in familiar educational activities.
Abstract: Gaze behavior was assessed in 20 autistic individuels and in an age- and mental-age-matched mentally retarded control group. A time-sample technique was used to collect frequency of gaze directed at staff, at task, and elsewhere (at other) in familiar educational settings as subjects interacted with familiar staff and engaged in familiar educational activities. Gaze behaviors were sampled in each of three interactional conditions defined by staff-subject ratio. Significant effects of the intensity of the interactional condition were observed for both groups. Overall autistic subjects were more likely to look elsewhere than the matched control cases and looked less at staff during one-to-one interaction. Relationships to age, developmental level, and other measures are discussed.
TL;DR: In this paper, a study of 60 male adjudicated juvenile delinquents between the ages 14-17, and 20 non-delinquent controls were administered measures of moral reasoning, social convention understanding, interpersonal awareness, socialization, empathy, autonomy, and psychopathy.
Abstract: Sixty male adjudicated juvenile delinquents between the ages 14–17, and 20 nondelinquent controls were administered measures of moral reasoning, social convention understanding, interpersonal awareness, socialization, empathy, autonomy, and psychopathy in an effort to explore the relations between moral reasoning, moral sentiment, and antisocial behavior. Not only did the delinquent group evidence developmental delays on all of these direct and indirect tests of morality functioning, but their performance on certain of these measures also differentiated those offenders who were more or less psychopathic. By demonstrating the special contribution of measures of moral will or sentiment to the study of antisocial behavior, these findings serve to underscore the multidimensional character of moral development, and the complexity of the relations between thought and action.
TL;DR: In this paper, a multidimensional study examined individual differences in observed behavior of 59 depressed mothers interacting with their 3-13-month-old infants in relation to selected demographic and psychosocial variables.
Abstract: A multidimensional study examined individual differences in observed behavior of 59 depressed mothers interacting with their 3–13-month-old infants in relation to selected demographic and psychosocial variables. Maternal competence–defined as sensitive, affectively appropriate maternal behavior, was positively related to maternal education, family income, and the number of hours mothers worked outside the home. Maternal competence was inversely related to life stress, marital discord, poor social support, and infant difficulty; all of these relations appeared to be mediated by the women's feelings of self-efficacy in the maternal role. A “risk index,” composed of noncorrelated variables (family income, hours per week mother worked outside the home, and maternal self-efficacy), was strongly related to maternal parenting competence. These results suggest that the quality of depressed mothers' behavior with their babies is related to self-evaluations and contextual risk or protective factors. The findings also highlight the heterogeneity in life circumstances and functioning of depressed women and the probable resulting variability in the level of functioning of their children.
TL;DR: Longitudinal follow-up data for 69 very low birthweight preterm infants were used to assess the influence of four factors on mother and teacher reports of behavior problems at 4 years, and neither neonatal medical data nor infant-mother attachment were good predictors ofbehavior problems at age 4.
Abstract: Longitudinal follow-up data for 69 very low birthweight preterm infants were used to assess the influence of four factors (neonatal medical complications, infant temperament, mother-child relationships, and family environment) on mother and teacher reports of behavior problems at 4 years. The proposed model of such influences being tested assumed that (1) the effects of neonatal medical factors would be indirect, and (2) each of the other three factors would show high stability from 1 to 4 years and would have a direct influence on behavior problem outcomes. Neither neonatal medical data nor infant-mother attachment were good predictors of behavior problems at age 4. With these exceptions, teacher report of behavior problems was predicted in a fashion consistent with the preliminary model. However, mother reports of behavior problems was predicted only by prior mother reports of child temperament. Discussion focuses on reasons for discrepancies in these pathways of influence.
TL;DR: This paper examined adolescents' expectations and values about how competent behaviors would work for them in difficult social situations and explored the relation of these appraisals to adolescents' delinquency, drug use, and sexual intercourse without use of adequate birth control.
Abstract: This study examined adolescents' expectations and values about how competent behaviors would work for them in difficult social situations and explored the relation of these appraisals to adolescents' delinquency, drug use, and sexual intercourse without use of adequate birth control. Several lines of research on the determinants of adolescent achievement motivation, social competence, and various problem behaviors are integrated within a unified framework based on both motivational and cognitive-social learning theories. One hundred adolescents at-risk for problematic behaviors, aged 15½–18, received structured interviews measuring their expectations of self-efficacy in performing socially competent behaviors, their expectations about the outcomes of these behaviors, their values toward these behaviors, their perceptions of the values of peers, and their identification with the values of important adults. Adolescents also reported their recent levels of delinquency, hard drug use, and unprotected sexual activity. Adolescents' expectations and values were significantly related to all three problem behaviors; males' low efficacy expectations and females' lack of identification with an adult's values were the strongest correlates of problem behaviors. Adolescents' expectations and values are considered as potentially important aspects of adolescents' models of themselves in social interactions, which may mediate the link between problematic family relationships in childhood and deviant behavior in adolescence.
TL;DR: Cicchetti as discussed by the authors pointed out that many of the ideas that are central to our current organismic models of development had their roots in the very beginnings of Western philosophy and in embryology, and argued that principles of behavior should be viewed in terms of the organization among parts and wholes.
Abstract: In a recent article, it was noted that many of the ideas that are central to our current organismic models of development had their roots in the very beginnings of Western philosophy and in embryology (see Cicchetti, 1990a). For example, one can see that the contemporary notion of the role of the integration of multiple domains of behavior for the harmonious functioning of the individual (cf. Cicchetti, 1990b; Sroufe & Fleeson, 1986) was anticipated by the Platonic conception of the triune character of the soul. Moreover, Plato's conceptualization of the dominance of reason (a higher function in his view) over passion (a lower function) is an early illustration of the idea of hierarchically integrated domains of functioning. Likewise, Aristotle was one of the first authors to contend that individuation, differentiation, and self-actualization were the characteristic aspects of developmental transformations (cf. Kaplan, 1967). Additionally, Aristotle believed in the dynamic relationship between the individual and the environment, stressed that behavior was multiply determined and that different levels of behavioral organization existed within humans, and argued that principles of behavior should be viewed in terms of the organization among parts and wholes. Despite the fact that these early philosophers did not relate their ideas to psychopathological conditions, their work had a
TL;DR: In this article, an integrative, multipathway model of mother-child aggression is presented in which the affective-cognitive biases of mothers and children and measures of their coerciveness help explain and predict subsequent coercive interactions.
Abstract: This article reviews literature that explains the development and maintenance of aggressive mother-child interactions using operant learning theory, highlighting limitations in its explanatory power. We also review research on the association between perceptions and the maintenance of aggressive interactions. An integrative, multipathway model of mother-child aggression is presented in which the affective-cognitive biases of mothers and children and measures of their coerciveness help explain and predict subsequent coercive interactions. We conclude with implications for intervention.
TL;DR: The developmental approach toward mental retardation historically has examined whether retarded individuals behave as do non-retarded individuals as mentioned in this paper, but in other cases mentally retarded children help illustrate the extremes to which certain individual styles of development can be taken.
Abstract: The developmental approach toward mental retardation historically has examined whether retarded individuals behave as do nonretarded individuals. An alternative approach involves using data from handicapped populations as “experiments of nature” to provide information about typical developmental processes. Three examples of this use of mental retardation findings include examinations of sequences, rates, and cross-domain relations. Certain instances of universal sequences appear to have been replicated by findings from children with mental retardation, but in other cases mentally retarded children help illustrate the extremes to which certain individual styles of development can be taken. Changing rates of development in different types of retarded children sometimes appear due to changes in the developmental tasks facing the child, sometimes to changes in neurobiologic factors related to chronological age. Cross-domain findings from children of diverse etiologies suggest the necessity of certain, specific connections among seemingly disparate behaviors in development. The article concludes with a discussion of mental retardation research as an experiment of nature that serves to replicate and amplify existing findings as well as to spur new extensions of developmental theory.
TL;DR: In this article, the adequacy of the data base for investigating the course of development, representing the socialization process, and identifying individualities and universals in development is discussed.
Abstract: Research in developmental psychopathology is used to examine and propose questions, concepts, and methods in the investigation of child development in the contexts of dysfunctional and well families. The adequacy of the data base for investigating the course of development, representing the socialization process, and identifying individualities and universals in development is discussed. A number of research issues that have been studied primarily in developmental psychopathology are recommended as relevant to normal child development. Multidomain and multisource longitudinal data are proposed as the means for better delineating development and for testing alternative models of developmental processes. Examples of data and experience are drawn from longitudinal studies of affectively ill parents and their children. Differences in the perspectives and approaches of normal child development research and developmental child psychopathology are discussed. The usefulness of thinking of two disciplines, normal child development and child development psychopathology, is questioned.
TL;DR: Family interaction patterns were compared for children with depressive disorders and children with schizophrenia spectrum disorders (SSD), results indicated that compared to SSD children, depressed children were less positive and more negative when interacting with their mothers.
Abstract: Family interaction patterns were compared for children with depressive disorders and children with schizophrenia spectrum disorders (SSD). Results indicated that compared to SSD children, depressed children were less positive and more negative when interacting with their mothers. Additionally, depressed children did not significantly reciprocate positive or negative statements initiated by their mothers, whereas reciprocity of both positiveness and negativeness was a significant characteristic of the SSD children. While no between group differences were found in the base rates of mothers' positive and negative responses, mothers of SSD children were more likely than mothers of depressed children to reciprocate child negativeness. Maternal reciprocity of positive statements, while not discriminating diagnostic groups, was a significant characteristic only of mothers of depressed children. The implications of these results for theories of developmental psychopathology are discussed.
TL;DR: In this article, the relationship of various personality and behavior describing characteristics of the mother in early childhood and in later childhood to the child's registered criminality up to the age of 30 was investigated for a sample of 122 males.
Abstract: The relationship of various personality and behavior describing characteristics of the mother in earliest childhood (ages 1–3) and in later childhood (ages 6–8) to the child's registered criminality up to the age of 30 was investigated for a sample of 122 males. Maternal attributes were rated by psychologists and nurses. Canonical correlations, measuring the relationship between the set of maternal attributes in young age of the child and the future registered criminality of the subjects, were in the magnitudes of .40 to .50. Both in early and in later childhood, mother's mood and her perceived maturity were attributes that, controlled for socioeconomic status of the home and mother's age, were significantly related to the child's future criminal behavior. In addition, mother's affective attitude in later childhood was significantly related to registered crime among the subjects. The change in prognostic power of maternal attributes from early to later childhood was discussed.
TL;DR: Viewing schizophrenia in developmental terms may have implications for the understanding of changes in cognition and behavior during normal adolescence, and work into the normal development of brain regions implicated in the illness, such as the frontal cortex.
Abstract: Schizophrenia is being increasingly viewed as a neurodevelopmental disorder, that is, one in which early, fixed pathology becomes manifest clinically during the normal course of maturation of the brain. Evidence for this position comes first from neuroimaging research, such as (1) studies that demonstrate morphologic brain changes (such as ventriculomegaly on CT scans) even in first break patients; and (2) a lack of correlation between these morphologic changes and duration of illness. Another source of evidence is studies of normal brain development in rodents and primates, including research that shows (1) the prefrontal cortex is a late maturing part of the brain, and (2) lesions of the prefrontal cortex may be initially silent and show delayed onset of dysfunction as the brain matures. A neurodevelopmental approach to schizophrenia, in turn, has stimulated further work into the normal development of brain regions implicated in the illness, such as the frontal cortex. Thus, the fields of neuropsychiatry and neurodevelopment have been mutually stimulated during the course of this work. In addition, viewing schizophrenia in developmental terms may have implications for the understanding of changes in cognition and behavior during normal adolescence.
TL;DR: The developmental approach employed in this study enabled further clarification of the cognitive parameters of formal thought disorder in middle childhood.
Abstract: We studied the conservation scores of 21 schizophrenic and schizotypal children (aged 6;7–12;5 years) and 21 yoked normal mental age matches and their relationship to the Kiddie Formal Thought Disorder Scale measures. Like the normal children, the schizophrenic/schizotypal subjects were able to recognize the invariance of two dimensional space, number, and substance, but not of weight. Unlike the normal children, the schizophrenic/schizotypal children were poor conservers of continuous and discontinuous matter, and this was related to their illogical thinking scores. Age and IQ accounted for the conservation competence of the normal children. The conservation skills of the patients, however, were associated with the severity of their formal thought disorder scores, not with their age or IQ. The developmental approach employed in this study enabled further clarification of the cognitive parameters of formal thought disorder in middle childhood. We discuss the developmental, clinical, and possible information processing implications of these findings.