Sibling Influence on Smoking Behavior: A Within-Family Look at Explanations for a Birth-Order Effect

Using a repeated-measures design, we found a significant birth-order relationship suggesting lower ages of smoking onset in later born siblings of a 1979 National Longitudinal Survey of Youth cohort. Two social learning mechanisms, modeling and opportunity, were explored to help illuminate the causes of trends in the within-family means. When empirical patterns were compared to predictions derived from our specifications of how opportunity and modeling processes should work, the results were unsuccessful in explaining the birth-order effect. As a third explanation of the birth-order effect, telescoping did show a significant influence. The effect size was small, however, and had little effect on the group means assessed. Finally, a pattern did emerge that was consistent with a reformulation of the opportunity process in which sisters play a particularly strong role. We develop future research implications of this pattern and speculate on genetic and social conservatism explanations.     

A Prospective Study of Maternal Exposure to Smoking during Pregnancy and Behavioral Development in the Child

Prenatal smoke exposure (PSE) is a risk factor for adverse outcomes in the offspring, including those affecting psychological development. However, it is uncertain whether these associations are the direct result of PSE or other confounding factors. The aim of this study was to examine the possible relationship between PSE and behavioral development in children at 7.5 years of age, considering several prenatal, neonatal and postnatal covariates. A cohort of 266 mother-child pairs was followed from the first trimester of pregnancy until the children reached 7.5 years of age. PSE was assessed using a questionnaire from prenatal clinical records and corroborated by plasma cotinine determinations in the first and second trimesters and in the cord. Mother-child pairs were classified into one of four groups: unexposed, exposed to passive smoking, first trimester active smoking only and active smoking throughout pregnancy. Child behavior was assessed using the Child Behavior Checklist for ages 6–18 and the Childhood Autism Spectrum Test. In multiple linear regression models, smoking during pregnancy was associated with higher scores in affective problems (β?=?0.298; p?=?0.004). No significant associations were found between smoking during pregnancy and externalizing problems. Findings indicate that PSE is negatively associated with behavioral development in childhood.

     

The Effects of Beliefs About Smoking and Health on Smoking Cessation

The purpose of this study was to examine whether beliefs of an American sample about smoking and health, as defined by cognitive orientation theory, would determine those smoking cessation program participants who would become abstainers and those who would not. Although the smoking cessation program was not designed to influence the specific kinds of beliefs studied, subscales measuring two of the four types of beliefs differentiated participants who would become abstainers from those who would not. Abstainers tended to have stronger goal beliefs about their desire to quit smoking, and stronger beliefs about the health-related implications of smoking. Participants' beliefs that they could resist an urge to smoke, which implied the use of coping skills, were more important in determining who would abstain from smoking than was their confidence that they could quit smoking, which implied the use of willpower.     

The Influences of Friends' and Parental Smoking on Adolescent Smoking Behavior: The Effects of Time and Prior Smoking1

This research examines the relative importance of parental and friends' influences on adolescents' smoking behavior and changes in the effects of social influences during adolescence. Data were collected at 4 times from 7th to 9th grades. Random-effects ordinal regression models were employed to predict the repeated classification of adolescent smoking status using time effects, prior smoking status, friends' smoking, and parental smoking. In general, the effects of friends' smoking are stronger than those of parental smoking, and these differences increase over time. In addition, friends' smoking has greater effects on nonsmokers than smokers. Separate models for males and females disclose some gender differences. In particular, the effects of friends' smoking are stronger for females than for males, and the increasing trend of friends' influences is more noticeable for females than for males. Models for 4 ethnic groups also suggest differential susceptibility to social influences in different cultures.     

Externalizing Outcomes of Youth with and without ADHD: Time-Varying Prediction by Parental ADHD and Mediated Effects

Although parental attention-deficit/hyperactivity disorder (ADHD) is a risk factor for multiple negative youth outcomes, it is unknown how change in parental ADHD symptoms over time affects change in child ADHD symptoms; moreover, mediators of these predictions are largely unknown. Parents of 230 5–10 year-old children (68 % male) with (n = 120) and without ADHD (n = 110) were followed prospectively for 6–7 years across three separate waves. Parents self-reported their ADHD and depression symptoms and similarly rated offspring ADHD, oppositional defiant disorder (ODD), and conduct disorder (CD) symptoms; youth self-reported their substance use. Temporally-ordered mediators consisted of parental expressed emotion (EE), derived from the Five Minute Speech Sample, and self-reported positive and negative parenting behavior. Controlling for key demographics and parental depression symptoms, increasing parental ADHD symptoms were a time-varying predictor of worsening youth ADHD and ODD, although it was unrelated to change in CD and alcohol/substance use. Next, although EE facets (i.e., criticism, emotional over-involvement) did not mediate these predictions, negative parenting behavior significantly mediated predictions of youth ADHD (and marginally in predictions of ODD) from parental ADHD symptoms. These quasi-experimental findings suggest that parental ADHD symptoms are a potential unique causal risk factor for offspring ADHD and ODD; also, preventing negative parenting behavior secondary to parental ADHD symptoms is critical to improve trajectories of youth ADHD and ODD. We consider parental ADHD symptoms and family factors underlying emergent externalizing problems utilizing a developmental psychopathology framework, including implications for intervention and prevention.     

Effects of methylphenidate on the persistence of ADHD boys following failure experiences

We examined the effects of methylphenidate on the task persistence of 21 boys with attention-deficit hyperactivity disorder (ADHD), after they had been exposed to both solvable and insolvable problems. The boys attempted to solve 10 different find-a-word puzzles on each of 4 days, involving the crossing of medication (placebo vs. 0.3 mg/kg) and prior task difficulty (solvable vs. insolvable). The results revealed that medication prevented the decrement in performance following the insolvable problems that was evident with the placebo days. In addition, on medication compared with placebo, the boys were more likely to make external attributions for failure and internal attributions for success. The results are discussed in terms of the impact of medication on ADHD boys' performance as medicated by cognitivemotivational state mechanisms.This study was undertaken in the 1989 Summer Treatment Program conducted at Western Psychiatric Institute and Clinic. We thank the staff of the program for their cooperation, particularly Mary Vodde-Hamilton, Karen Greenslade, and Gary Vallano. The authors thank Monica Harris for her helpful comments.     

Case-Mixing Effects on Spelling Recognition: The Importance of Test Format

In a multiple-choice spelling recognition test, 56 university students were more accurate on more regular than irregular words, and on lower-case than mixed-case words, with the case mixing effect greater for irregular than regular words. In Experiment 2, the same words were presented singly in correct or incorrect spellings and distortion of word shape was achieved by case mixing (32 subjects) or by alternating the size of lower-case letters within a word (32 subjects). The main effects of regularity and distortion were replicated and the effect of distortion was greater for incorrect than correct stimuli, with correctly spelled words suffering a decrement in accuracy of less than 5 percentage points. Case mixing had a greater effect than size mixing on response latencies. In Experiment 3, with comparable test procedures, case mixing interacted with regularity in the subjects analysis for the multiple choice format, but not the single presentation format. This result indicates that comparisons based on visual configuration may be an artifact of multiple-choice tests.     

Social Costs of Smoking: Effects of Tobacco Smoke on Hostile Behavior1

Male and female undergraduates interacted with a same-sex experimenter and a same-sex assistant of the experimenter. Either the experimenter or the assistant smoked. Subjects were provoked or not provoked by the experimenter and then smoked. Subjects were provoked or not provided by the experimenter and then provided with an opportunity to treat him or her in a hostile manner. Additionally, subjects were classified as smokers or nonsmokers and as supporting or opposing smoking in public places. Tobacco smoke was found to facilitate hostile behavior whether or not subjects were independently annoyed and whether or not it originated from the annoyer or a bystander. No sex differences were observed in this effect. Also, no appreciable difference was observed in the hostile behavior of smokers and nonsmokers. Persons opposed to public smoking reacted more strongly to the provocation than persons supportive of public smoking, but this effect was independent of the presence or absence of smoke.     

不同干预者在青少年吸烟行为预防干预活动中的作用

选取北京市一所普通中学初一、初二、高一各三个班与高二两个班的359名学生为被试,随机分成教师实施干预组、课题组成员实施干预组和控制组,以比较教师和课题组成员的不同干预效果。结果发现：课题组成员为干预者的效果好于教师;教师组青少年后测比前测更认同吸烟的危害,课题成员组青少年后测比前测更反对吸烟的好处、更赞同吸烟具有各种危害;课题组成员和教师都能显著地提高被试的抵制技能;干预条件可间接通过吸烟好处和抵制技能对青少年后测吸烟行为产生作用。     

Consultation-based Academic Interventions for Children with ADHD: Effects on Reading and Mathematics Achievement

The purpose of this investigation was to evaluate the relative efficacy of two consultation-based models for designing academic interventions to enhance the educational functioning of children with attention-deficit/hyperactivity disorder (ADHD). Children (N=167) meeting DSM-IV criteria for ADHD were randomly assigned to one of two consultation groups: Individualized Academic Intervention (IAI; interventions designed using a data-based decision-making model that involved ongoing feedback to teachers) and Generic Academic Intervention (GAI; interventions designed based on consultant-teacher collaboration, representing "consultation as usual"). Teachers implemented academic interventions over 15 months. Academic outcomes (e.g., standardized achievement test, and teacher ratings of academic skills) were assessed on four occasions (baseline, 3 months, 12 months, 15 months). Hierarchical linear modeling analyses indicated significant positive growth for 8 of the 14 dependent variables; however, trajectories did not differ significantly across consultation groups. Interventions in the IAI group were delivered with significantly greater integrity; however, groups did not differ with respect to teacher ratings of treatment acceptability. The results of this study provide partial support for the effectiveness of consultation-based academic interventions in enhancing educational functioning in children with ADHD; however, the relative advantages of an individualized model over "consultation as usual" have yet to be established.     

The Effects of Childhood ADHD Symptoms on Early-onset Substance Use: A Swedish Twin Study

Research has documented that children and adolescents with attention-deficit/hyperactivity disorder (ADHD) are at increased risk of substance use problems. Few studies, however, have focused on early-onset substance use. This study therefore investigated how the two symptom dimensions of ADHD (hyperactivity/impulsivity and inattention) are associated with early-onset substance use, the role of persistent ADHD for the association, and to what extent the association is influenced by genetic and environmental factors. Twins (1,480 pairs) in the Swedish Twin Study of Child and Adolescent Development were followed from childhood to adolescence. ADHD symptoms were measured at age 8–9 and age 13–14 via parent-report, whereas substance use was assessed at age 13–14 via self-report. Results revealed that hyperactive/impulsive symptoms predicted early-onset “sometimes” tobacco use (adjusted odds ratios, 1.12, for one symptom count), controlling for inattentive symptoms and conduct problem behaviors. There is no independent effect of inattentive symptoms on early-onset substance use. Children with persistent hyperactivity/impulsivity (defined as scoring above the 75th percentile at both time points) had a pronounced risk of both early-onset tobacco and alcohol use (adjusted odds ratios from 1.86 to 3.35, compared to the reference group). The associations between hyperactivity/impulsivity and early-onset substance use were primarily influenced by genetic factors. Our results indicated that hyperactivity/impulsivity, but not inattention, is an important early predictor for early-onset substance use, and a shared genetic susceptibility is suggested to explain this association.     

Effects of IQ on Executive Function Measures in Children with ADHD

The present study compared children with Attention-Deficit Hyperactivity Disorder (ADHD) and controls on a selected set of clinical measures of executive function (EF). A total of 92 children (51 ADHD, 41 control), ages 6-16, completed measures chosen from a larger neuropsychological battery to illustrate diverse components of the EF construct (planning, inhibitory control, response preparation, memory search). The selected measures were moderately correlated with one another, and moderately correlated with IQ. After controlling for age, sex, presence of learning disability (LD), ADHD, and IQ test version, Full Scale IQ was significantly related to four of the five selected EF measures. A second analysis showed group differences on the EF measures at different IQ levels. After covarying for age, there was a significant multivariate effect for IQ level (average, high average, superior) and a significant multivariate interaction between group (ADHD vs. control) and IQ level. Three of the five selected EF measures showed significant univariate group effects (controls performing better than ADHD) at the average IQ level; however, there were no significant group differences between children with ADHD and controls at high average or superior IQ levels. These results suggest that clinical measures of EF may differ among children with ADHD and controls at average IQ levels, but there is poorer discriminatory power for these measures among children with above average IQ.     

Effects of Smoking Urge on Generation of Smoking-Related Information1

Despite widespread research, the role of smoking urge in relapse remains unclear. The present study examined the effect of a smoking-urge manipulation on the generation of smoking-related information. During each of 2 experimental sessions, smokers were given 90 s to list as many positive characteristics of smoking, and then 90 s to list as many negative characteristics as they could. Results indicated that experimental manipulations designed to elicit an urge to smoke increased the number of positive but not negative aspects of smoking. This selective accessing of positive information related to cigarette use during an urge may increase the likelihood of smoking. Results are interpreted with respect to extant models of drug urge and Kunda's (1990) theory of motivated reasoning.     

Evidence for specificity of ERP abnormalities during response inhibition in ADHD children: A comparison with reading disorder children without ADHD

Executive function and working memory deficits are not only present in ADHD, but also in reading disorder (RD). Here, high-density ERPs were recorded during the Stop Signal Task in 53 children and adolescents: An ADHD-combined type group, a group with RD, and a healthy control group. The ADHD-C group displayed unique abnormalities of the frontal N200. Both healthy controls and RD groups showed a success-related right frontal N200 modulation, which was absent in the ADHD group. Second, for Success Inhibition trials, the ADHD-C had smaller right frontal N200 waves relative to healthy controls, while the RD group did not. In contrast, NoGo-P3 abnormalities were present both in the ADHD-C and RD groups. Impaired early response inhibition mechanisms, indexed by the frontal N200, appear to be limited to ADHD-C. In contrast, deficits in later cognitive control and error monitoring mechanisms, indexed by the NoGo-P3, appear to be present in both conditions.     

Effects of Enforcement of Youth Access Laws on Smoking Prevalence

Smoking is the primary preventable cause of death, and yet 3,000 adolescents become smokers each day. Most adult smokers begin this deadly habit when they are under the age of 18, which is the minimum legal age for the purchase of cigarettes. The majority of adolescent smokers are able to purchase cigarettes even though laws prohibit the sale of cigarettes to minors. In the late 1980s, Woodridge, IL, became one of the first towns in the nation to demonstrate a significant reduction in the ability of youth to purchase cigarettes. Almost 2 years after passage of this legislation, the percentage of regular smokers among 7th- and 8th-grade students had been reduced from 16 to 5%. Seven-year follow-up data in a sample of high school youths indicate that youths living in communities with regular enforcement had significantly less smoking than those living in communities without regular enforcement. In particular, rates of regular smoking were 8.1% in communities with regular enforcement versus 15.5% in communities without regular enforcement. It is possible that adolescents who had restricted access to tobacco products were less likely to become regular smokers. These findings have important public health implications, particularly in light of recent federal legislation mandating that all states develop programs to reduce access of youth to tobacco products.     

Halo Effects in Ratings of ADHD and ODD: Identification of Susceptible Symptoms

Halo effects in the assessment of ADHD and ODD were examined. Participants were 159 undergraduate college students who rated children described as showing disruptive behaviors. Bidirectional halo effects were found. Specifically, the presence of oppositionality artificially inflated ratings of inattention and hyperactivity, and the combined presence of inattention and hyperactivity artificially inflated ratings of oppositionality. Several specific items were found to be particularly susceptible to halo effects. Due to these halo effects caution should be exercised when diagnosing multiple behavior disorders, especially with items found to be particularly susceptible. Clinical interviews conducted by mental health professionals may help distinguish between the true presence of multiple disorders and halo effects based on ratings. Future research should determine whether structured interviews conducted by mental health professionals are less susceptible to halo effects than rating scales.     

Activity in children with ADHD during waiting situations in the classroom: A pilot study

Background. According to the optimal stimulation theory and the delay aversion hypothesis, children with attention deficit hyperactivity disorder (ADHD) experience difficulties when they are confronted with low levels of stimulation and delay, respectively. Aim. This study investigated the activity level of children with ADHD during waiting situations in the classroom. Three series of hypothesis were made: (1) with respect to the comparison between waiting and non‐waiting intervals, (2) with respect to the effects of non‐temporal stimulation, and (3) with respect to the effects of temporal stimulation on behaviour during waiting. Sample and method. The activity level of 14 children with ADHD and 14 control children between the ages of 6 and 11 years was observed during two non‐waiting class situations and three waiting situations: without any stimulation, in the presence of non‐temporal stimulation and in the presence of temporal stimulation. Results. Both groups of children obtained higher activity scores for all behavioural dimensions during waiting compared with non‐waiting situations. The results further revealed additive effects of waiting and diagnostic group on behaviour. Additional non‐temporal stimulation during waiting affected the behaviour of all children for most behavioural characteristics. For noisiness, additive effects were also found for diagnostic group and either non‐temporal stimulation or temporal stimulation. For restlessness, a trend for an interaction effect between diagnostic group and non‐temporal stimulation was found. Conclusion. The findings have clear implications for school observations within an assessment protocol.