Temporally selective attention modulates early perceptual processing: event-related potential evidence

Some of the most important information we encounter changes so rapidly that our perceptual systems cannot process all of it in detail. Spatially selective attention is critical for perception when more information than can be processed in detail is presented simultaneously at distinct locations. When presented with complex, rapidly changing information, listeners may need to selectively attend to specific times rather than to locations. We present evidence that listeners can direct selective attention to time points that differ by as little as 500 msec, and that doing so improves target detection, affects baseline neural activity preceding stimulus presentation, and modulates auditory evoked potentials at a perceptually early stage. These data demonstrate that attentional modulation of early perceptual processing is temporally precise and that listeners can flexibly allocate temporally selective attention over short intervals, making it a viable mechanism for preferentially processing the most relevant segments in rapidly changing streams.     

Cross-validation of the Mood Disorders Questionnaire, the Internal State Scale, and the Hypomanic Personality Scale

Previous research indicates that the Mood Disorder Questionnaire (MDQ), the Internal State Scale (ISS), and the Hypomanic Personality Scale (HPS) have the capacity to assess symptoms of bipolar spectrum disorders. The present study cross-validates these scales in a sample of 167 undergraduate students. Individuals were divided into high, medium and low likelihood of caseness (HLC, MLC and LLC) groups based on operationalised cut-off criteria on the MDQ. Scores on the ISS Perceived Conflict subscales were positively and proportionately associated with elevated likelihood of caseness. The HLC group was distinguished from the other two groups by high levels of ISS Depression, whereas the LLC group was distinguished from the other two groups by low levels of ISS Activation and hypomanic personality traits. The majority of individuals reported a history of isolated (hypo)manic experiences, and a quarter of the sample reached screening criteria for a bipolar spectrum disorder (Isometsae et al., 2003). The results are discussed in the context of the role of activation, depression, and interpersonal conflict in bipolar spectrum disorders.     

The visual discrimination of bending

The sensitivity of observers to nonrigid bending was evaluated in two experiments. In both experiments, observers were required to discriminate on any given trial which of two bending rods was more elastic. In experiment 1, both rods bent within the same oriented plane, and bent either in a frontoparallel plane or bent in depth. In experiment 2, the two rods within any given trial bent in different, randomly chosen orientations in depth. The results of both experiments revealed that human observers are sensitive to, and can reliably detect, relatively small differences in bending (the average Weber fraction across experiments 1 and 2 was 9.0%). The performance of the human observers was compared to that of models that based their elasticity judgments upon either static projected curvature or mean and maximal projected speed. Despite the fact that all of the observers reported compelling 3-D perceptions of bending in depth, their judgments were both qualitatively and quantitatively consistent with the performance of the models. This similarity suggests that relatively straightforward information about the elasticity of simple bending objects is available in projected retinal images.     

Stepping Stones Triple P: An RCT of a Parenting Program with Parents of a Child Diagnosed with an Autism Spectrum Disorder

Whilst the Triple P Positive Parenting Program has a large evidence base (Sanders, Clinical Child and Family Psychology Review 2:71–90, 1999; Sanders, Journal of Consulting and Clinical Psychology 68:624–640, 2000) and preliminary evidence indicates that Stepping Stones Triple P is also efficacious (Roberts, Journal of Clinical Child and Adolescent Psychology, 35(2):180–193, 2006), to date Stepping Stones has not been evaluated with the ASD population. Fifty-nine families with a child with ASD aged between 2 and 9 participated in this randomized controlled trial. The results demonstrate significant improvements in parental reports of child behaviour and parenting styles with the treatment effects for child behaviour, parental over reactivity and parental verbosity being maintained at follow-up 6 months later. Further, the results suggest significant improvements in parental satisfaction and conflict about parenting as well as a sleeper effect for parental efficacy. The results indicate that Stepping Stones Triple P is a promising intervention for parents of children with ASD. Limitations and future research are also addressed.     

Relationship between psychopathy and indirect aggression use in a noncriminal population

Psychopathy has long been associated with increased use of direct aggression and violence, especially among male inmates. Little research has, of yet, considered the relation between psychopathy and indirect forms of aggression. The current research sought to investigate the relationship between psychopathy and indirect aggression in a noncriminal sample. The results indicated that there was a strong relationship between psychopathic traits and indirect aggression, with strong correlations between indirect aggression and both factor 1 (coldheartedness) and factor 3 (impulsive antisociality). This association remained significant even after the effects of direct aggression had been controlled for. Path analysis indicated that both direct and indirect aggression was underpinned by the same psychopathy factors. This suggests that high psychopathy scorers will utilize direct and indirect aggression equally and, as such, the choice of one type of aggression over the other may be dependant on either situational factors or external moderators. Aggr. Behav. 35:408–421, 2009. © 2009 Wiley‐Liss, Inc.     

Identifying Youth at Risk for Treatment Failure in Outpatient Community Mental Health Services

We developed predicted change trajectories and a warning system designed to identify psychotherapy cases at risk for treatment failure as observed in archival Youth Outcome Questionnaire data (parent/guardian-report) from 363 children and adolescents (ages 4–17) served in an outpatient community mental health system. We used multilevel modeling procedures to develop models of predicted change based on demographic information. Controlling for the effects of age on intercept, no other variables were significant in the model. The warning system we created from half of the sample (n = 181) correctly identified 71% of treatment failures in the other half of the sample (n = 182), defined as cases whose symptoms were significantly higher at the end of treatment compared to symptoms at intake. As over half of youth cases in this usual care setting did not demonstrate reliable improvement in symptoms, these results further emphasize the value of patient-focused research in monitoring patient progress and prompting changes in the treatment approach if suitable progress is not observed.     

Student interracial interactions and perceptions of school as a community

Communally organized, as opposed to bureaucratically organized, schools are expected to provide significant advantages to students in terms of their cognitive and social growth. However, for students to avail themselves of these benefits, they need to experience school as a community. One factor that may influence whether students view their school as a functional community is the kind of teacher–student and peer interactions they observe or personally experience. This study examines the effects of positive and negative interracial interactions on whether students sense that their school is a community. Analysis of a large sample of elementary and secondary schools in a major urban school district show that positive interracial interactions contribute to students’ sense of school community while negative actions inhibit that sense.

Maintenance of Treatment Gains: A Comparison of Enhanced,Standard, and Self-directed Triple P-Positive Parenting Program

This report describes the 3 year outcomes of three different variants of the Triple P-Positive Parenting Program, a behavioural family intervention. Families were randomly assigned to one of three intervention conditions or to a waitlist condition. At 1 year follow-up there were similar improvements on observational and self-report measures of preschooler disruptive behaviour for Enhanced, Standard and Self Directed variants of Triple P. At 3 year follow-up (completed by 139 families), each condition showed a similar level of maintenance of intervention effects. Approximately 2/3 of preschoolers who were clinically elevated on measures of disruptive behaviour at pre-intervention moved from the clinical to the non-clinical range. Across conditions, there was a comparable preventive effect for each intervention for these high risk children. The implications of the findings for the development of brief, cost effective parenting interventions within a public health framework are discussed.     

The Eight Trigrams of the Chinese I Ching and the Eight Primary Emotions

Durkheim and Mauss, in Primitive Classification , concluded that the emotions play a causal role in the history of dual symbolic classification systems, but could not test this intuitive speculation because they saw a classification of the emotions as impossible. In this paper a portion of Plutchik's psychoevolutionary model of the primary emotions are assumed to be valid and are then investigated through analysis of one of their three case studies of primitive classification, that of classification in ancient China, where their emphasis was on the eight "trigrams" or "powers" that they saw arranged in a "divinatory compass." The trigrams are three-line components of the "hexagrams," the six-line figures that are interpreted as master signs in I Ching divination rituals. Using Plutchik's psychoevolutionary classification of the emotions as a basis of comparison, especially his model of the primary emotions as adaptive reactions to the positive and negative experiences of four existential problems – identity, temporality/reproduction, hierarchy, and territoriality – it is found that both trigrams and primary emotions exist as four pairs of opposites. The eight trigrams and eight primary emotions similarly can be seen as adaptive reactions to the four basic problems of life. Through structural analysis, correspondences between the trigrams and the primary emotions are developed, the result being that the primary emotions are structurally isomorphic and very close in first meanings to the primary attributes of the trigrams. Implications of this isomorphism of structure for the development of a social psychology of the emotions are discussed.