Age of Onset of ADHD in a Sample of Elementary School Students

Examined the age of onset of ADHD symptoms and subtypes using parent ratings of a large sample of elementary school students. Results showed: (1) in children with ADHD-combined type, hyperactive-impulsive symptoms emerged at younger ages than inattention symptoms; (2) about one-fifth of children who met symptom count and impairment criteria for ADHD did not meet the age of onset criterion; (3) Children who did not meet the age of onset criterion consisted primarily of children with inattention problems; and (4) children who did not meet the age of onset criterion had more impaired parent-child relationships, self-esteem, family functioning, and higher overall impairment ratings than children who did meet the criterion. These results raise questions about the validity of the age of onset criterion for ADHD as formulated in DSM-IV.     

Neuropsychological abilities of preschool-aged children who display hyperactivity and/or oppositional-defiant behavior problems.

This study focused on gaining a better understanding of the neuropsychological abilities of preschool-aged children who show elevated levels of hyperactivity and oppositional-defiance. It examined the performance of children aged 48 to 67 months on tests of attention/executive function, language, memory, and sensorimotor abilities, as measured by the NEPSY and Conners' K-CPT. Two hundred thirty-seven children were divided into four subgroups based on mothers' report of behavior using rating scales and a diagnostic interview: hyperactive only (HYP), oppositional-defiant only (OD), hyperactive and oppositional-defiant (HYP/OD), and nonproblem. Children in the HYP/OD group scored significantly worse than nonproblem children on four of nine subtests on the NEPSY, including one test of executive function, one test of language comprehension, and both tests of short-term verbal memory. However, only the test of executive function (Statue) showed significant predictive power, and, while specificity of this subtest was good, sensitivity was poor. On the K-CPT, a continuous performance test, children in both the HYP and HYP/OD groups performed worse than children in the OD and nonproblem groups. When the NEPSY Statue subtest and the K-CPT were used together, overall predictive power was .74. Results suggest that neuropsychological deficits can be observed among preschool children with hyperactivity, particularly when comorbid oppositional-defiance is present; however, moderate predictive power suggests that these tests should be used in conjunction with other methods of assessment.     

Nonverbal arithmetic in humans: light from noise

Animal and human data suggest the existence of a cross-species system of analog number representation (e.g., Cordes, Gelman, Gallistel, & Whalen, 2001; Meeck & Church, 1983), which may mediate the computation of statistical regularities in the environment (Gallistel, Gelman, & Cordes, 2006). However, evidence of arithmetic manipulation of these nonverbal magnitude representations is sparse and lacking in depth. This study uses the analysis of variability as a tool for understanding properties of these combinatorial processes. Human subjects participated in tasks requiring responses dependent upon the addition, subtraction, or reproduction of nonverbal counts. Variance analyses revealed that the magnitude of both inputs and answer contributed to the variability in the arithmetic responses, with operand variability dominating. Other contributing factors to the observed variability and implications for logarithmic versus scalar models of magnitude representation are discussed in light of these results.     

Infants of depressed mothers show less “depressed” behavior with their nursery teachers

This study investigated whether infants' “depressed” behavior (i.e., less positive affect and lower activity levels) noted during their interactions with their depressed mothers generalized to their interactions with their nondepressed nursery teachers. Field et al. (1988) reported that infants of depressed mothers also show “depressed behavior” when interacting with nondepressed female adults, suggesting that the infants develop a generalized “depressed mood style” of interaction. However, in that study the adults were also strangers to the infants, confounding the results. In the present study, eighteen 3-month-old infants interacted with their depressed mothers and also with their nondepressed familiar teachers in 3-minute episodes. The infants' behavior ratings improved when they interacted with their familiar teachers compared to their interactions with their mothers. The infants' low activity levels and negative affect were specific to their interactions with their depressed mothers. Thus, the data suggest that the infants respond differentially to depressed and nondepressed adults who are familiar.     

Self-perception of competence in Korean children: Age, sex and home influences

The self-perceived competence of 750 Korean children in kindergarten through the seventh grade was investigated using adaptations of Harter's scales for younger and older children. Measures of family characteristics and the home environment were collected to explore the determinants of variation in self-perceived competence. Adaptations of the competence scales yielded maximum similarity of content across the full age span, and also reflected the Korean emphasis on collectivist, intergenerational social skills and on early, direct training in academic cognitive skills. The results replicate two findings reported for North American and European samples; namely, increasing differentiation of domains of self-perceived competence with age, and decreasing levels of self-perceived competence in the opening years of primary school. In addition, the present study also finds two phenomena not evident in previous reports. First, a significant statistical interaction of grade and sex in the cognitive and physical domain was found, such that girls' self-perceived competence decreased more with age than did that of boys. Second, two social domains were differentiated, one reflecting peer acceptance (like the Harter scales) and the other tapping intergenerational and collectivist social skills that are valued in Korean society. Structural equation modeling revealed different patterns of influence for the four outcome measures. Both the analysis of internal variation and comparison with previous reports highlight the importance of a social and cultural perspective in understanding the development of children's self-perceived competence.     

Attitudes and Beliefs About Suicidal Behavior When Coming Out Is the Precipitant of the Suicidal Behavior

Young persons who identify as lesbian, gay, or bisexual (LGB) have higher rates of nonfatal suicidal behavior than their heterosexual peers. It has been suggested that suicidal behavior may be a painful but unavoidable rite of passage for LGB youths at the coming out stage. Could this mean that suicidal behavior is considered understandable and even permissible behavior for LGB youths at this stage? In this study we explored reactions to a suicidal decision when coming out was the precipitant of the suicidal act. Specifically, we compared attitudes toward a suicidal decision after coming out and being rejected by one's parents with attitudes toward a suicidal decision after experiencing other stressors (i.e., a physical illness, a relationship loss, or an academic failure). Contrary to expectation, the decision to engage in suicidal behavior following coming out was not viewed in relatively accepting terms. Rather, it was perceived as unsound and weak. As in previous studies, physical illness was singled out as a relatively understandable motivation for suicidal behavior. In addition, we found that androgynous persons viewed the suicidal decision as more unsound than other gender-identity types, independent of precipitant. Given similar evidence from other studies, future research might explore the role of androgyny in the protection against suicidal behavior.

     

TEAM SPORTS ACHIEVEMENT AND SELF-ESTEEM DEVELOPMENT AMONG URBAN ADOLESCENT GIRLS

In this study we investigate the contribution of achievement in team sports to adolescent girls' self-esteem development. Adolescent girls ( N = 247) from racially and ethnically diverse backgrounds were surveyed as part of a larger study investigating the development of poor urban youth. Participants responded to items tapping global self-esteem, team sports achievement, and athletic self-evaluations. The results of hierarchical regression analyses indicate that girls' team sports achievement experiences in early adolescence are positively associated with self-esteem in middle adolescence. This relationship is partially mediated by team sports self-evaluations. Applications of these findings to the development of interventions designed to enhance the self-esteem of young women and girls are discussed.     

Promise is debt, threat another matter: the effect of credibility on the interpretation of conditional promises and threats.

Evidence from reasoning tasks shows that promises and threats both tend to receive biconditional interpretations. They also both display high speaker control. On the face of it, the only difference seems to be the positive or negative signing of the consequent. In a promise, the speaker tries to persuade the hearer to do something by holding out the prospect of a particular reward; in a threat, the speaker tries to refrain the hearer from doing something by holding out the prospect of a particular punishment. This paper investigates the respects in which conditional promises and threats differ further by means of an inference task. The credibility of the consequent was manipulated in order to examine whether the acceptability ratings of inferences based on promises and on threats would be equally affected. The results of the inference task and an analysis of the reasons people give for their answers suggest that the credibility of promises is less affected by the use of excessive consequents than the credibility of threats. In other words, promise remains debt, whereas threat is another matter.