Predicting ADHD Symptoms in Adolescence from Early Childhood Temperament Traits

Extreme levels of certain temperament traits can be early markers of different developmental pathways of attention-deficit/hyperactivity disorder (ADHD). However, the long-term utility of using these traits as predictors of ADHD is not fully known. This study includes 64 male adolescents (M age = 13.5), who have been followed since birth as part of a longitudinal study. The primary aim was to test effortful control (EC), activity level, and anger, measured in early childhood – both with mother’s reports and laboratory assessments –as predictors of ADHD symptoms in adolescence. Further, we investigated the specificity of this prediction to the different ADHD symptom domains. The results demonstrated that early temperament dimensions of EC and activity level were predictive of ADHD symptoms about 10 years later, when the participants reached adolescence. Moreover, activity level showed specificity only to hyperactivity-impulsivity symptoms whereas EC was a predictor of the two symptom domains. Anger had a predictive correlation with ADHD symptoms; however, it did not have a unique predictive contribution. These results emphasize the relevance of EC and activity level in the developmental course of ADHD. Identification of early risk factors can lead to more efficient design and implementation of intervention programs.     

Feeling of knowing and duration of unsuccessful memory search

Five experiments examined the impact of feeling of knowing on decisions to continue or to terminate the search of memory in question answering. First, two pairs of experiments respectively scrutinized knowledge about (1) ordinary facts and (2) national capitals. The first experiment of each pair extracted normative data: The participants indicated whether they had probably once known the answer to a question (once-knew-it scale), supplied the answer if they knew it, and either judged the likelihood of their recognizing the answer or made other pertinent metacognitive judgments. In these norming experiments, recognition ratings were highly correlated with once-knew-it responses, and both measures were highly predictive of performance. Thisindicated that both measures reflect feeling of knowing judgments. In the second experiment of each pair, different participants were timed as they indicated whether they knew the answer to the same questions. Responselatencies for responding "don't know" were strongly positively correlated with the once-knew-it judgments made by the norming participants. This relationship was corroborated by Experiment 5, which compared the crucial measures within participants. These outcomes suggest that, in this context, feeling of knowing judgments are predictive of how long people will search memory for requested information.     

Electrophysiological evidence for the time-course of verifying text ideas

We examined how verb factivity influences the ability of readers to detect and resolve the mismatch of receiving false referents in relation to true referents in discourse contexts. Factive verbs (e.g., know), but not nonfactive verbs (believe), entail the truth of their complements. Recent research by Singer [Singer, M. (2006). Verification of text ideas during reading. Journal of Memory and Language, 54, 574-591] suggests that there are pragmatic costs associated with knowing something that is clearly false and only believing something that is clearly true. However, because Singer measured reading times for full sentences, it could not be determined whether these costs were initiated upon the appearance of the critical target word (i.e., the word that validated or invalidated previous text ideas) or at a later point in the sentences. In the present research we recorded event-related brain potentials while people read the same passages for comprehension and analyzed potentials evoked to the critical target words. Our results demonstrate that the brain distinguishes between true and false target words by at least 200ms after their onset, and that the pragmatic costs identified by Singer lead to interactions between verb factivity and truth in both early (P2) and later occurring brain components (late phase of N400 and late frontal positivity). In general, the results suggest readers had greater difficulty integrating false nouns than true nouns following factive than nonfactive verbs, and that detection of this mismatch also occurred earlier following factive verbs. Our results provide insight into the time-course of the processes that underlie the verification of text ideas, and extend neurocognitive research on anaphoric resolution.     

High negative valence does not protect emotional event-related potentials from spatial inattention and perceptual load

Previous research suggests that intense, emotional pictures at fixation elicit an early posterior negativity (EPN) and a late positive potential (LPP) despite manipulations of spatial inattention and perceptual load. However, if high emotional intensity protects against such manipulations, then these manipulations should reduce emotional effects on EPN and LPP more strongly for medium than for intense emotional pictures. To test this prediction, pictures that were high negative, medium negative, or neutral were shown at fixation, and a small letter string was superimposed on the picture center. When participants attended the pictures, there were clear emotional effects on EPN and LPP. When participants attended the letter string, the emotional effects on LPP decreased; this decrease was smaller for medium than for high negative pictures. Thus, opposite of predictions, spatial inattention reduced the emotional effects more strongly for high than for medium negative pictures. As a manipulation of perceptual load, participants performed the letter task with one, three, or six relevant letters. Irrespective of load, EPN and LPP were similar for high and medium negative pictures. Our findings suggest that high negative valence does not protect EPN and LPP more strongly from effects of spatial inattention and perceptual load than does medium negative valence.     

Does the Hague Convention on Intercountry Adoption Adequately Protect Orphaned and Vulnerable Children and Their Families?

The Hague Convention on Intercountry Adoption, designed to protect the best interests of the child in intercountry adoption, has been signed by 83 nations. We evaluate both the strengths and the weaknesses of the Convention in achieving this purpose and also in protecting a second vulnerable population, birth families. A case study example of the United States’ implementation of the Hague requirements reveals several weaknesses with respect to non-Convention countries as sending nations, financial oversight, and oversight of foreign collaborators. International birth families, especially birth mothers giving consent to an adoption, are often vulnerable because of a lack of power and resources, as well as different cultural understandings of the nature of family and adoption. We conclude that in order to protect vulnerable children and birth families, individual sending and receiving countries need to supplement the Hague Convention with specific, contextually appropriate laws and regulations.     

Profiles of Racial Socialization Among African American Parents: Correlates,Context, and Outcome

Self report and observational data on racial socialization practices in a sample of 218 African American parents of young children were used to determine whether or not parents could be characterized in terms of their pattern of racial socialization practices. Parents fell into four groups: silence about race, emphasis on cultural socialization, emphasis on cultural socialization and coping strategies, or a balanced approach. Silence about race was more common among parents of boys, whereas an emphasis on cultural socialization was more common among parents of girls. Silence about race was less common in neighborhoods with high levels of negative social climate, and a combination of cultural socialization with coping strategies for discrimination was more common in neighborhoods with high neighborhood potential for community involvement with children. The coping emphasis/cultural socialization approach was associated with significantly lower child problem behavior, although some gender differences were evident. A cultural socialization emphasis was associated with higher cognitive scores among girls, and a combination of cultural socialization, coping with discrimination, and promotion of mistrust was associated with higher cognitive scores among boys. Implications of this profile approach for the study of racial socialization practices in ethnic minority families are discussed.     

Measuring Competence and Dysfunction in Preschool Children: Source Agreement and Component Structure

Agreement between parents and teachers on ratings of three domains of behaviors exhibited by preschool children and the structural relations between these domains were measured. Parents and teachers rated the behaviors of a socioeconomically diverse sample of 610 children; ratings were obtained from parents at three time points and from teachers at two time points. The results indicated little agreement between sources on the ratings of individual child behaviors; however, ratings within a source were stable over time. Principal components analyses of source ratings combined and separately indicated virtually identical and independent three-component solutions comprised of a coping competence, externalizing behavior, and internalizing behavior component. These data suggest that competence and dysfunction develop in response to different contextual demands and underscore the importance of measuring each domain of behavior in clinical and research settings.     

Doll Play Narratives About Starting School in Children of Socially Anxious Mothers, and Their Relation to Subsequent Child School-Based Anxiety

Child social anxiety is common, and predicts later emotional and academic impairment. Offspring of socially anxious mothers are at increased risk. It is important to establish whether individual vulnerability to disorder can be identified in young children. The responses of 4.5?year-old children of mothers with social phobia (N?=?62) and non-anxious mothers (N?=?60) were compared, two months before school entry, using a Doll Play (DP) procedure focused on the social challenge of starting school. DP responses were examined in relation to teacher reports of anxious-depressed symptoms and social worries at the end of the child’s first school term. The role of earlier child behavioral inhibition and attachment, assessed at 14?months, was also considered. Compared to children of non-anxious mothers, children of mothers with social phobia were significantly more likely to give anxiously negative responses in their school DP (OR?=?2.57). In turn, negative DP predicted teacher reported anxious-depressed and social worry problems. There were no effects of infant behavioral inhibition or attachment. Vulnerability in young children at risk of anxiety can be identified using Doll Play narratives.     

Biological-mereological coincidence

This paper presents and defends an account of the coincidence of biological organisms with mereological sums of their material components. That is, an organism and the sum of its material components are distinct material objects existing in the same place at the same time. Instead of relying on historical or modal differences to show how such coincident entities are distinct, this paper argues that there is a class of physiological properties of biological organisms that their coincident mereological sums do not have. The account answers some of the most pressing objections to coincidence, for example the so-called ??grounding problem??, that material coincidence seems to require that coinciding objects have modal differences that do not supervene on any other properties.     

Suicide schema in schizophrenia: the effect of emotional reactivity, negative symptoms and schema elaboration

Suicide risk is thought to increase with a greater potential for activation of suicide-related schemas. Suicide schemas are less likely to be activated with reductions of emotional range associated with certain negative symptoms of schizophrenia. The study tested whether suicide risk would increase in patients with recent onset schizophrenia with increased potential for suicide schema activation as indicated by lower levels of specific negative symptoms that reflected emotional reactivity, namely emotional withdrawal and blunted affect. A logistic regression analysis of baseline data of 278 recent onset schizophrenic patients with a measure of suicide behaviour as the dependent variable and negative symptoms, delusions, hallucinations, depression, gender, episode, ethnicity, education, age, duration of untreated psychosis and substance use as independent variables was carried out. Emotional withdrawal, but not blunted affect was significant and negatively associated, and depression positively associated with suicide behaviour. There was evidence to indicate that restricted emotions are associated with reduced suicide risk as predicted.