Detection of glass patterns by pigeons and humans: implications for differences in higher-level processing

Glass patterns have been used to examine mechanisms underlying form perception. The current investigation compared detection of Glass patterns by pigeons and humans and provides evidence for substantial species differences in global form perception. Subjects were required to discriminate, on a simultaneous display, a random dot pattern from a Glass pattern. Four different randomly presented Glass patterns were used (concentric, radial, parallel-vertical, and parallel-horizontal). Detection thresholds were measured by degrading the Glass patterns through the addition of random noise. For both humans and pigeons, discrimination decreased systematically with the addition of noise. Humans showed detection differences among the four patterns, with lowest thresholds to radial and concentric patterns and highest thresholds to the parallel-horizontal pattern. Pigeons did not show a detection difference across the four patterns. Implications for differences in neural processing of complex forms are discussed.     

Predicting Quality of Life in Caregivers of Children with Cancer Within One Year Post-Diagnosis

Journal of Child and Family Studies - Pediatric cancer diagnosis and treatment can impact the psychological adjustment and quality of life (QOL) of caregivers. We examined: (a) the relationship...     

Associations Between Parental Psychopathic Traits,Parenting, and Adolescent Callous-Unemotional Traits

Research on Child and Adolescent Psychopathology - Callous-unemotional (CU) traits (i.e., callousness, low empathy, shallow affect) have been conceptualized as a downward extension of the...     

Predicting rape events: The influence of intimate partner violence history,condom use resistance,and heavy drinking

Sexual aggression perpetration is a public health epidemic, and burgeoning research aims to delineate risk factors for individuals who perpetrate completed rape. The current study investigated physical and psychological intimate partner violence (IPV) history, coercive condom use resistance (CUR), and heavy episodic drinking (HED) as prospective risk factors for rape perpetration. Young adult men (N = 430) ages 21–30 completed background measures as well as follow‐up assessments regarding rape events perpetrated over the course of 3 months. Negative binomial regression with log link function was utilized to examine whether these risk factors interacted to prospectively predict completed rape. There was a significant interaction between physical IPV and HED predicting completed rape; men with high HED and greater physical IPV histories perpetrated more completed rapes during follow‐up than men with low HED at the same level of physical IPV. Moreover, psychological IPV and coercive CUR interacted to predict completed rape such that men with high coercive CUR and greater psychological IPV histories perpetrated more completed rapes throughout the follow‐up period than men with low coercive CUR at the same level of psychological IPV. Findings suggest targets for intervention efforts and highlight the need to understand the topography of different forms of aggression perpetration.     

Born This Way? A Qualitative Examination of Public Perceptions of the Causes of Pedophilia and Sexual Offending against Children

Understanding public opinion about the causes of pedophilia and/or child sex offending is vital, as the views of the public influence how governments respond to sexual offenders. However, little research has been undertaken on this topic. This study addresses this gap by examining the causes that members of the public ascribe to pedophilia and/or child sexual abuse using qualitative data from online forums. The etiological accounts that the public gave provide important information for those developing public prevention policies and/or education campaigns about child sexual abuse. Key implications of these etiological explanations are analyzed in this regard.     

Effects of canonical color,luminance, and orientation on sustained inattentional blindness for scenes

Whether scene gist perception occurs automatically and unconsciously has been the subject of much debate. In addition to demonstrating a new method that adapts the Mack and Rock (1998) inattentional blindness cross procedure to allow for sustained inattentional blindness over a large number of trials, we report evidence from a series of experiments that shows that canonical scene features reduce inattentional blindness to scenes by facilitating the extraction of scene gist. When attentional demands are high, the combination of canonical color, canonical luminance, and canonical orientation reduces rates of inattentional blindness. However, when attentional demands are reduced, canonical features are independently sufficient to facilitate gist extraction and to capture attention. These results demonstrate that canonical color, canonical luminance, and canonical orientation all contribute to scene gist perception, and that when attentional demands are high, only highly canonical stimuli are sufficient to capture attention.     

Frames of Reference in Self-Reports of Health,Well-Being,Fatigue, and Pain: a Qualitative Examination

Self-reports in survey research can be affected by internal comparison standards, or Frames of Reference (FoRs), that people apply when making their ratings. The goal of this study was to determine which FoRs people naturally use when rating their health, subjective well-being, fatigue, and pain. We further examined whether FoRs varied by content domain and age group. One hundred adults from a community sample of the US general population participated in individual semi-structured qualitative interviews. Participants provided self-report ratings on two of the four content domains and were then systematically queried about FoRs. Interview responses were summarized and coded into broad FoR categories. Four broad FoR categories emerged: References to (1) Other People, (2) an Earlier Time in Life, (3) an Important Event in the Past, and (4) a Hypothetical Situation. FoRs were reported in the majority (80.5%) of responses and multiple FoRs were reported in 34% of responses. The reporting of FoRs was evident for all domains, but was more prevalent for well-being compared to pain. References to a Hypothetical Situation were only mentioned in the well-being and health domains. For health, references to Other People were more frequently reported at older compared to younger ages. Our results extend prior work by demonstrating that participants’ reporting of FoRs is evident in ratings of various content domains. They further suggest that a limited number of FoRs are used and that their identification holds promise for understanding and controlling systematic group differences in FoRs.     

Physiological Emotion Regulation in Children with ADHD with and without Comorbid Internalizing Disorders: a Preliminary Study

Children with Attention-Deficit/Hyperactivity Disorder (ADHD) experience deficits in emotion regulation that can be measured physiologically under environmental stress conditions by examining respiratory sinus arrhythmia (RSA), a marker of parasympathetic nervous system (PNS) withdrawal. The current pilot study examined the impact of comorbid internalizing disorders and comorbid Oppositional Defiant Disorder (ODD) on emotion regulation in children with ADHD by measuring RSA as an indicator of dysregulated emotional reactivity. Twenty-four 7–10 year old children with ADHD participated in the current study. Children completed a 5-min resting attending baseline while electrocardiogram data (ECG) were recorded to examine baseline RSA. Children then completed a stress inducing, blocked goal, Card Sorting Task to measure RSA reactivity to stress. Results revealed a significant effect of internalizing disorder status on RSA difference score, F (1, 18)?=?5.83, p?=?.03, η² = .25. Children in the comorbid internalizing disorder group had a significantly greater decrease in RSA from the baseline time period to the card sorting task. There was no significant effect of ODD diagnostic status on RSA difference score, p?>?.05. The results of this preliminary study suggest that among children with ADHD, the presence of a comorbid internalizing disorder predicts greater withdrawal of the PNS. These findings represent an important step in understanding autonomic functioning of children with ADHD and comorbid disorders.     

Reference frames in spatial updating when body-based cues are absent

The current study investigated the reference frame used in spatial updating when idiothetic cues to self-motion were minimized (desktop virtual reality). In Experiment 1, participants learned a layout of eight objects from a single perspective (learning heading) in a virtual environment. After learning, they were placed in the same virtual environment and used a keyboard to navigate to two of the learned objects (visible) before pointing to a third object (invisible). We manipulated participants’ starting orientation (initial heading) and final orientation (final heading) before pointing, to examine the reference frame used in this task. We found that participants used the initial heading and the learning heading to establish reference directions. In Experiment 2, the procedure was almost the same as in Experiment 1 except that participants pointed to objects relative to an imagined heading that differed from their final heading in the virtual environment. In this case, pointing performance was only affected by alignment with the learning heading. We concluded that the initial heading played an important role in spatial updating without idiothetic cues, but the representation established at this heading was transient and affected by the interruption of spatial updating; the learning heading, on the other hand, corresponded to an enduring representation which was used consistently.