Individual differences in components of slow cortical potentials: implications for models of information processing

Individual differences in the effects of pharmacological and behavioural manipulations on slow cortical potentials (SCP), may reflect personality differences in type of informational control under attentional stress. Two experiments were conducted to examine SCP component differences in extraverts and introverts under different attentional tasks and with and without nicotine smoking ‘stressor’ conditions. In an initial experiment a decrease in late negativity for introverts and an increase in late negativity for extraverts suggested that smoking enhanced introverts' stimulus set and extraverts' motor set. In a second experiment, personality differences in SCP were examined again, but within a signal-detection paradigm, which allows separate assessment of the contribution of sensory sensitivity and response bias factors to performance. Smoking increased sensitivity in both personality groups, but response bias (caution) increased in introverts only. Extraverts showed an increase in central negativity during smoking whilst introverts showed a decrease in negativity and a decrease in positive wave components. The results are explained in terms of a motor model of attentional control whereby smoking regulates inhibitory controlled actions in introverts, but activates general motor processes for extraverts.     

Modality-specific spatial coordinates

The development of spatial coordinates may depend on the integration of information from different modalities, or may be based on modality-specific coding. On the first assumption, the blind would be handicapped in deriving adequate spatial concepts, and on the other, no such handicap need exist. When spatial orientation is the salient feature of the task, subjects appear to profit from the integration of information from two or more modalities. When shape is salient, subjects adopt modality-specific coding strategies.     

Seeing and hearing and space and space and time

A previous experiment had shown spatial location to be judged in terms of the framework provided by the modality in which stimuli were presented. In the present study, digits were either auditorally or visually presented, and in either form the three digits appeared successivly to the left, in the center, and to the right of the S. The digit which occurred temporally in the middle of the sequence was never central from the spatial viewpoint. The S was asked to indicate which digit was the middle one. Ss were blind, deaf, or normal. The deaf and two control groups saw visual displays, and the blind and their controls heard auditory displays. The former groups predominantly chose the spatially middle digit and the latter groups the temporally middle. It was concluded that modality of presentation was the trigger which switched in the coding dimension of time or space.     

Detecting random responders with infrequency scales using an error-balancing threshold

Infrequency scales are becoming a popular mode of data screening, due to their availability and ease of implementation. Recent research has indicated that the interpretation and functioning of infrequency items may not be as straightforward as had previously been thought (Curran & Hauser, 2015), yet there are no empirically based guidelines for implementing cutoffs using these items. In the present study, we compared two methods of detecting random responding with infrequency items: a zero-tolerance threshold versus a threshold that balances classification error rates. The results showed that a traditional zero-tolerance approach, on average, screens data that are less indicative of careless responding than those screened by the error-balancing approach. Thus, the de facto standard of applying a “zero-tolerance” approach when screening participants with infrequency scales may be too stringent, so that meaningful responses may also be removed from analyses. Recommendations and future directions are discussed.     

Does Positive Mental Health in Adolescence Longitudinally Predict Healthy Transitions in Young Adulthood?

The present study examined the longer-term implications of adolescent positive mental health for successful young adult transitions. Positive mental health in adolescence was defined by indicators roughly corresponding to Seligman’s positive psychology PERMA framework (positive emotional experiences, engagement, relationships, purpose, and accomplishment), with the addition of health. Data were drawn from one of Australia’s longest running studies of social and emotional development (Australian Temperament Project, est. 1983, N = 2443), which has followed a large representative community sample from infancy to 27–28 years of age. In the analyzed sample of n = 999, positive mental health at 15–16 years was associated with indicators of career progression (educational attainment and perceived competence) and taking on citizenship responsibilities (volunteering and civic activities) over a decade later at 27–28 years. Mental health problems in adolescence were more relevant to establishing romantic partnerships in young adulthood: adolescent antisocial behaviors predicted higher likelihood of being in a relationship, while depressive symptoms predicted lower quality partnerships. The results suggest that successful transitions into young adult roles and responsibilities may be facilitated by targeted mental health promotion interventions designed to both foster positive mental health and address mental health difficulties in adolescence.     

ANTISTRUCTURE AND THE ROOTS OF RELIGIOUS EXPERIENCE

The cognitive and evolutionary sciences of religion offer a standard model of religious representations, but no equivalent paradigm for investigating religiously interpreted altered states of consciousness (religious ASCs). Here, I describe a neo-Durkheimian framework for studying religious ASCs that centralizes social predictive cognition. Within a processual model of ritual, ritual behaviors toggle between reinforcing normative social structures and downplaying them. Specifically, antistructural ritual shifts cognitive focus away from conventional affordances, collective intentionality, and social prediction, and toward physical affordances and behavioral motivations that make few references to others’ intentional states. Using synchrony and dance as paradigmatic examples of antistructural ritual that stimulate religious ASCs, I assemble literature from anthropology, cognitive neuroscience, and philosophy of language to offer fruitful empirical predictions and opportunities for testing based on this framework. Among the empirical predictions is that antistructural ritual may provide for cultural change in religions when religions are construed as complex adaptive systems.     

Characteristics of Children and Adolescents Admitted to a Residential Treatment Center

Studies of youths in residential treatment that utilize systematic assessments and validated measures are rare. We examined psychopathology, family characteristics, occurrence of physical or sexual abuse, types of aggressive behavior, hyperactive/impulsive behavior, medical and neurological problems, and self-reported drug and alcohol use in 397 youth who were assessed using reliable measures and consecutively treated in a residential treatment center. Results indicate high rates of internalizing and externalizing psychopathology, aggressive behavior, and consistent gender differences, with girls having higher levels of internalizing and externalizing psychopathology and aggressive behavior. The sample was characterized by high rates of medical problems including asthma, seizures, and obesity, as well as evidence of extensive family dysfunction, including high rates of parental alcohol use, violence, and physical or sexual abuse. Residential treatment needs to progress beyond the one size fits all approach and develop more specific and empirically proven treatments for the specific needs of this population.     

Use them or lose them: Are manipulatives needed to assess numeracy and geometry performance in preschool?

In two studies, we investigated whether using three-dimensional (3D) manipulatives during assessment aided performance on a variety of preschool mathematics tasks compared to pictorial representations. On measures of children's understanding of counting and cardinality (n = 103), there was no difference in performance between manipulatives and pictures, with Bayes factors suggesting moderate evidence in favor of the null hypothesis. On a measure of children's shape identification (n = 93), there was no difference in performance between objects and pictures, with Bayes factors suggesting moderate evidence in favor of the null hypothesis. These results suggest flexibility in the materials that can be used during assessment. Pictures, or 2D renderings of 3D objects, which can be easily printed and reproduced, may be sufficient for assessing counting and shape knowledge without the need for more cumbersome concrete manipulatives.