Developmental change in attention-deficit hyperactivity disorder in boys: A four-year longitudinal study

One hundred six clinic-referred boys meeting criteria for DSM-III-R attention-deficit hyperactivity disorder (ADHD) (mean age 9.4 years) were assessed annually for 4 years using structured interviews of multiple informants. Hyperactivity—impulsivity symptoms declined with increasing age, but inattention symptoms did not. Rather, inattention declined only from the first to the second assessment and remained stable thereafter in boys of all ages. The rate of decline in hyperactivity—impulsivity symptoms was independent of the amount and type of treatment received. Boys who still met criteria for ADHD in Years 3 and 4 were significantly younger, more hyperactive—impulsive, and more likely to exhibit conduct disorder in Year 1 than boys who no longer met criteria in Years 3 and 4.This study was supported by grant 1-R01-MH42529 from the National Insitute of Mental Health to Rolf Loeber and Benjamin B. Lahey.     

Situation Models: The Mental Leap Into Imagined Worlds

Situation models are mental representations of the state of affairs described in a text rather than of the text itself. Much of the research on situation models in narrative comprehension suggests that comprehenders behave as though they are in the narrated situation rather than outside of it. This article reviews some of this evidence and provides an outlook on future developments.     

Effects of Response Probability on Response Force in Simple RT

Response force (RF) was measured in a simple reaction time (RT) experiment varying response uncertainty by cuing the probability of the response on each trial. In all cases, RF decreased as response probability increased. The dependence of RF on response probability was insensitive to foreperiod length and to the use of loud auditory response signals, although the dependence of RT on response probability was sensitive to both of these manipulations. In combination with previous findings, these results provide evidence that RT and RF can be dissociated. We describe an extension of Naatanen's readiness model that can account for the effects of response probability on RF and RT. According to this model, the distance between motor activation and a threshold for action is relatively large when subjects are unprepared, and a large increment is needed to exceed this threshold, resulting in slow but foreceful responses. A possible neurophysiological implementation of this model is suggested.     

Child psychopathology and deviant family hierarchies

The association between child psychopathology and reversals in family hierarchies (where the child is seen as equal or higher in the hierarchy than the parental figures) were examined with the Madanes Family Hierarchy Test on a sample of 177 clinic-referred boys. Madanes' original findings of the association of substance use and deviant family hierarchy were replicated in this younger sample, (age 7 to 12). Boys diagnosed with Conduct Disorder reported significantly more deviant hierarchies while boys diagnosed with Overanxious Disorder reported significantly fewer deviant hierarchies. Follow-up results revealed some instability and lack of informant agreement, but the hierarchy measure was not confounded by age, race, SES, IQ, or parents' marital status.     

Relation of Family Problems to Patterns of Delinquent Involvement Among Urban Youth

The relation of patterns of family problems and patterns of delinquent behavior over time was evaluated among a sample of inner-city minority adolescent males. Empirically derived groups were identified and included: nonoffenders, chronic minor offenders, escalators, and serious chronic offenders. Patterns of family problems were also identified and differentially related to delinquency groups. Members of the group involved in serious chronic offending were more likely to have families characterized by multiple problems including disruption, conflict, and lack of parental involvement, sometimes so extreme as to meet the legal requirement of neglect. They were also more likely to have families characterized by deviant behavior and attitudes. The finding of specific relations between types of family problems and patterns of delinquent behavior has important implications for intervention and prevention. Rather than assuming a general relation between family functioning and delinquent involvement, specific aspects of family functioning may need to be targeted to affect different patterns of delinquent involvement.     

Social class and sex as determinants of future orientation (time perspective) in adults

This studv was designed to test hypotheses concerning the influence of sex roles and social status on future orientation (FO). The latter was measured in various categories (spheres of life),on the dimensions of density (number of hopes andfears cited by the subject), extension, and optimism-pessimism. Also included was a measure of ‘internal vs. external control’ (the subject's assessment as to whether the realization of his hopes and fears is dependent more on himself or more on external factors). Subjects were 100 employed men and women of the lower and middle class. It was found that, in comparison with women, men voiced more hopes/fears in the public sphere (economy, politics, environment) and fewer in the private sphere uamily, occupation, personal development). Men had a more extended FO in the occupational and economic spheres; women, in contrast, in the private sphere. (These results contradicted the assumption of earlier studies that FO is a general orientation, not varying across different domains of life.) Middle-class (in comparison to lowerclass) persons manifested a, wore extended FO, envisioned the distant future more optimistically, and believed more markedly that the realization of their hopes and fears depended on themselves.