Gender differences in pressure pain threshold in a repeated measures assessment

The objective of this study was to evaluate gender differences in the pain threshold, considering the type of pressure point, its location and the repetition of the assessment. The pressure pain threshold was evaluated in 30 healthy volunteers (12 men and 18 women) in three assessment sessions separated by 15 min and 7 days, respectively. Each assessment session was in turn composed of two trials in each of which 24 different pressure points (symmetrically located), representing the 18 tender points for the diagnosis of fibromyalgia and six control points, were assessed. Gender differences were found in the pain threshold for all of the points and the measures taken, women showing a lower pain threshold in comparison to men and being these differences more pronounced for control points than for tender points, the former reaching statistical significance in all cases. The analysis of the influence of repeated measures on gender differences in the pain threshold showed a distinct pattern of recuperation in men than in women, although only one difference in pain threshold was significant. The utility of the tender point concept to study gender differences in pain threshold and the mechanisms that may explain different patterns of recuperation between genders are discussed.     

A Novel Approach to Enhancing Upper Extremity Coordination in Children with Autism Spectrum Disorder

Abstract

Recent studies examining children diagnosed with Autism Spectrum Disorder (ASD) have revealed kinematic markers highlighting deficits in the preparatory and online phases of upper extremity movements. In the following study, 12 children with high functioning ASD were first assessed (pre-test) on 15 trials of a reciprocal upper extremity Fitts Law target task by flexing and extending their right arm in the horizontal plane between two targets as fast and accurately as possible. Following the initial assessment, the children either continued with 30 additional trials of the target task (control) or were asked to track a sine wave template (experimental). All participants were then assessed on 15 trials of the target test (post-test). Results reveal that tracking the sine wave template during training not only produced faster movements compared to the control but also produced these movements in a more harmonic way.     

Evidence for specificity of ERP abnormalities during response inhibition in ADHD children: A comparison with reading disorder children without ADHD

Executive function and working memory deficits are not only present in ADHD, but also in reading disorder (RD). Here, high-density ERPs were recorded during the Stop Signal Task in 53 children and adolescents: An ADHD-combined type group, a group with RD, and a healthy control group. The ADHD-C group displayed unique abnormalities of the frontal N200. Both healthy controls and RD groups showed a success-related right frontal N200 modulation, which was absent in the ADHD group. Second, for Success Inhibition trials, the ADHD-C had smaller right frontal N200 waves relative to healthy controls, while the RD group did not. In contrast, NoGo-P3 abnormalities were present both in the ADHD-C and RD groups. Impaired early response inhibition mechanisms, indexed by the frontal N200, appear to be limited to ADHD-C. In contrast, deficits in later cognitive control and error monitoring mechanisms, indexed by the NoGo-P3, appear to be present in both conditions.     

Empathy and risk status for child physical abuse: the effects of an adult victim's pain cues and an adult victim's intent on aggression

It has been proposed that abusive parents and parents at high risk for child physical abuse could be more likely to view children's behavior as being motivated by hostile intent [e.g., Milner, 1993], as compared to nonabusive and low‐risk parents. This kind of misattribution of other's behavior may inhibit empathic emotion, and therefore, could block the inhibiting effect of a victim's pain cues on aggression [Baron, 1979]. An experiment was designed to analyze the moderating effect of an adult victim's intent on aggression in high‐ and low‐risk participants for child physical abuse. A 2 × 2 factorial design based upon two levels of the participant's risk status (high, low) and two levels of victim's intent (positive, ambiguous) was employed. All participants observed an adult victim's pain cues. Ninety‐five (48 high and 47 low risk for child physical abuse) undergraduate females enrolled in courses at the University of the Basque Country participated in the experiment. The main effects of victims' intent and of participants' risk status were statistically significant. Participants in the ambiguous victim's intent condition aggressed significantly more than participants in the positive victim's intent condition. Moreover, high‐risk participants aggressed more than low‐risk participants regardless of the victim's intent. A significant interaction between risk status and victim's intent was expected. High‐risk subjects for child physical abuse were expected to aggress more than low‐risk subjects only in the ambiguous victim's intent condition. However, results did not support this hypothesis. Aggr. Behav. 32:1–12, 2006. © 2006 Wiley‐Liss, Inc.     

Assessment of emotional reactivity produced by exposure to virtual environments in patients with eating disorders.

The aim of this study was to assess the usefulness of virtual environments representing situations that are emotionally significant to subjects with eating disorders (ED). These environments may be applied with both evaluative and therapeutic aims and in simulation procedures to carry out a range of experimental studies. This paper is part of a wider research project analyzing the influence of the situation to which subjects are exposed on their performance on body image estimation tasks. Thirty female patients with eating disorders were exposed to six virtual environments: a living-room (neutral situation), a kitchen with high-calorie food, a kitchen with low-calorie food, a restaurant with high-calorie food, a restaurant with low-calorie food, and a swimming-pool. After exposure to each environment the STAI-S (a measurement of state anxiety) and the CDB (a measurement of depression) were administered to all subjects. The results show that virtual reality instruments are particularly useful for simulating everyday situations that may provoke emotional reactions such as anxiety and depression, in patients with ED. Virtual environments in which subjects are obliged to ingest high-calorie food provoke the highest levels of state anxiety and depression.     

Coparenting Profiles in the Context of Mexican‐Origin Teen Pregnancy: Links to Mother–Daughter Relationship Quality and Adjustment

The current study explored the multifaceted nature of the mother–adolescent coparental relationship with data from 167 Mexican‐origin adolescent mothers and their own mothers at 10 months post childbirth. Profiles of mother–adolescent coparenting were created with latent profile analysis using adolescents’ reports of three dimensions of coparenting (communication, involvement, and conflict). Four profiles were identified: (a) Harmonious Coparents (equal involvement, high communication, low conflict); (b) Harmonious‐Adolescent Primary (adolescent is more involved than mother, high communication, low conflict); (c) Conflictual Coparents (equal involvement, high communication, high conflict); and (d) Conflictual‐Adolescent Primary (adolescent is more involved than mother, moderate communication, high conflict). Families characterized by high mother–daughter conflict and psychological control prior to childbirth were more likely to belong in the Conflictual Coparents profile. In addition, adolescents’ and mothers’ depressive symptoms and parenting efficacy after childbirth were linked to profile membership, such that the Harmonious‐Adolescent Primary profile reported the most positive adjustment patterns, whereas profiles with high coparental conflict (i.e., Conflictual Coparenting and Conflictual‐Adolescent Primary profiles) showed the least positive adjustment patterns. Discussion considers the applied implications of identifying precursors to healthy and problematic mother–daughter coparenting for families of adolescent mothers in the early years of parenting.