Leibniz-linked Pairs of Deductive Systems

A pair of deductive systems (S,S??) is Leibniz-linked when S?? is an extension of S and on every algebra there is a map sending each filter of S to a filter of S?? with the same Leibniz congruence. We study this generalization to arbitrary deductive systems of the notion of the strong version of a protoalgebraic deductive system, studied in earlier papers, and of some results recently found for particular non-protoalgebraic deductive systems. The necessary examples and counterexamples found in the literature are described.     

Heterotopias of Homelessness: Citizenship on the Margins

The concept of heterotopia challenges political theory, which has often focused on utopic thinking. Foucault describes a heterotopia as a heterogenous space that juxtaposes in a single real place several spaces, several sites that are in themselves incompatible. Streets, squares and parks form heterotopias when their utopic purity as public space is juxtaposed with the private spaces created by the cardboard boxes and other temporary shelters of homeless people. Since citizenship has traditionally been thought of as participation in a democratic public sphere, how do heterotopias of homelessness challenge the ideas about citizenship? Based on narrative research with homeless people in Poland, I show how the homeless conceive of their marginality. Their participation or non-participation in democracy is not hidden but, on the contrary, very visible in public spaces where they are included as excluded.     

Comparison of pausing behavior in children who stutter and children who have Asperger syndrome

Purpose

The objective of this research was to compare the number and types of grammatical and non-grammatical silent pauses presented by stutterers and subjects with Asperger syndrome in their narratives.

Method

Ten children who stutter and four participants with Asperger syndrome (mean ages of both groups 10 years) were assessed at the Speech and Language Disorders Department of the Universidade Federal de São Paulo/Brasil. They narrated a story based on a pre-selected sequence of pictures. They were filmed and their productions were analyzed using version 5.0.47 of Praat (http://www.fon.hum.uva.nl/praat/download_win.html). Silent intervals in the speech that ranged from 0.25 to 4 s were considered pauses. The pauses were classified as grammatical and non-grammatical, depending on the words that preceded and followed them.

Results

Both groups presented grammatical and non-grammatical pauses and the former predominated. The children with Asperger syndrome produced a greater number of pauses than the stutterers.Educational objectives: The reader will be able to: (1) characterize the use of pauses in the oral narrative; (2) distinguish a grammatical pause from a non-grammatical pause regarding the use and function; (3) recognize the pattern of pause found in the two populations.     

Female intimate partner violence perpetration: stability and predictors of mutual and nonmutual aggression across the first year of college

Cross-sectional and longitudinal predictors of mutual and nonmutual intimate partner violence (IPV) perpetration were identified in a sample of female college freshmen (N = 499). Using female reports, couples were classified as to whether the relationship included no IPV, female-only IPV, or mutual IPV (male-only IPV was too rare to analyze). Mutual IPV was more common than asymmetrical IPV, and women in mutually violent relationships perpetrated more frequent acts of physical aggression than those in female-only violent relationships. In cross-sectional analyses of IPV in the first semester of college, only partner antisocial behavior and psychological aggression distinguished female-only IPV from no IPV; witnessing mother-to-father aggression, higher psychological aggression, more frequent partner marijuana use, partner antisocial behavior, and, surprisingly, higher relationship satisfaction, discriminated mutual IPV from no IPV. Contrary to hypothesis, first semester (T1) IPV did not predict having a new partner in the second semester (T2); however, women who reported more frequent heavy episodic drinking and lower relationship satisfaction at T1 were more likely to be in a different relationship at T2. Prospective prediction of T2 IPV category failed to support the hypothesis that female-only IPV would escalate to mutual IPV. The majority of couples with female-only IPV reported no IPV at T2. After accounting for T1 IPV, the only significant predictor of T2 IPV category was T1 psychological aggression, suggesting that this may be an appropriate target for IPV prevention efforts among college dating couples.     

Attachment patterns and emotion regulation strategies in the second year

With the aim of studying the relationship between methods of emotion regulation and quality of attachment we examined 39 infants with different patterns of attachment, of whom 20 were classified as secure (B), 12 as avoidant (A) and 7 as resistant (C), assessing the regulatory strategies adopted by them during the Strange Situation at 13 months. Secure infants used strategies of positive social engagement more than insecure avoidant infants, while resistant infants displayed greater negative social engagement and less object orientation than the other two groups. Avoidant infants adopted positive and negative hetero-regulatory strategies less than the other groups, also differing from resistant infants in their greater use of object regulatory strategies. There were no significant differences as regards self-comforting regulation. Thus, the findings showed how the most significant differences to emerge between the groups concerned hetero-regulatory strategies, developed by the infant in interaction with attachment figures, and regulatory strategies oriented towards objects. Further analysis showed how the use by part of each attachment group of the emotion regulation strategies varies, differentiating the episodes of the SSP according to their level of stress.     

Auditory and visual information do not affect self-paced bilateral finger tapping in children with DCD

Children with Developmental Coordination Disorder (DCD) are more variable in timing their fingers to an external cue. In this study, we investigated the intrinsic coordination properties of self-selected anti-phase finger tapping with and without vision and audition in children with and without DCD and compared their performance to that of adults. Ten children with DCD (Mean age = 7.12 ± 0.3 years), 10 age- and sex-matched typically developing (TD) children, and 10 adults participated in this study. Participants tapped their fingers in anti-phase at a self-selected speed under four different sensory conditions: (1) with vision and audition, (2) with vision but no audition, (3) with audition but no vision, and (4) without vision and audition. We assessed intertap interval (ITI), variability of ITI, mean relative phasing (RP) between the fingers and the variability in RP. Children with DCD adopted a similar mean frequency, but were less accurate and more variable than the other groups. The different sensory conditions did not affect performance in any of the groups. We conclude that visual and auditory feedback of tapping are not salient information sources for bilateral self-selected tapping and that children with DCD are intrinsically less accurate and more variable in their tapping frequency and coordination.     

Increased intraindividual variability is a marker of ADHD but also of dyslexia: a study on handwriting

It has been suggested that intraindividual variability (IIV) in neuropsychological tasks may be a specific characteristic of Attention-Deficit Hyperactivity Disorder (ADHD), but previous research has not thoroughly examined whether IIV also concerns academic performance or other types of developmental disabilities. The present study investigates the role of IIV in 15 children with ADHD without reading difficulties, 15 children with dyslexia without associated symptoms of ADHD, and 15 typically developing children (TDC) in a simple response time (SRT) task and in a skill more directly related with school learning—handwriting. Results show that children with ADHD and those with dyslexia have a greater IIV than the TDC in both tasks. However, the pattern of the relationship between IIV in SRT and handwriting was different in children with ADHD and dyslexia: the IIV in the handwriting task was found to depend on IIV in the SRT task only in children with dyslexia. These findings support the crucial role of IIV not only in ADHD but also in other developmental disabilities, but suggest that in children with ADHD it may present specific aspects related with motor control.     

ERP correlates of performance monitoring in elderly

Previous studies on performance monitoring repeatedly found attenuated error-related negativities (Ne/ERN) in elderly, while findings for the correct-related negativity (Nc/CRN) are inconsistent. The present study aimed at clarifying inconsistent Nc/CRN results in elderly. Therefore, a refined design was employed to control for potential influences on the Nc/CRN, namely decision uncertainty and partial error processing. Further, we intended to study Nc/CRN variations with trial compatibility that were found in previous studies for younger but not for older adults. Results revealed increased Nc/CRN and decreased Ne/ERN amplitudes in older compared to younger adults. While the Ne/ERN was larger than the Nc/CRN in younger adults, both components were similar-sized in older adults. Further, a modulation of Nc/CRN amplitudes between compatible and incompatible trials was observed in younger adults, but was absent in older adults. Reduced differentiation of response-related negativities with response accuracy or stimulus compatibility in elderly suggests a reduced adaptation of associated processes to changing demands. Further, this might also point to different processes reflected by Nc/CRN and Ne/ERN and to reduced error-specific monitoring but increased general or strategic monitoring in elderly.     

Increasing stimulus intensity does not affect sensorimotor synchronization

When people synchronize taps with isochronously presented stimuli, taps usually precede the pacing stimuli [negative mean asynchrony (NMA)]. One explanation of NMA [sensory accumulation model (SAM), Aschersleben in Brain Cogn 48:66–79, 2002] is that more time is needed to generate a central code for kinesthetic-tactile information than for auditory or visual stimuli. The SAM predicts that raising the intensity of the pacing stimuli shortens the time for their sensory accumulation, thereby increasing NMA. This prediction was tested by asking participants to synchronize finger force pulses with target isochronous stimuli with various intensities. In addition, participants performed a simple reaction-time task, for comparison. Higher intensity led to shorter reaction times. However, intensity manipulation did not affect NMA in the synchronization task. This finding is not consistent with the predictions based on the SAM. Discrepancies in sensitivity to stimulus intensity between sensorimotor synchronization and reaction-time tasks point to the involvement of different timing mechanisms in these two tasks.