Effects of nonlinguistic auditory variations on lexical processing in Broca's aphasics

In a series of experiments, the effect of white noise distortion and talker variation on lexical access in normal and Broca's aphasic participants was examined using an auditory lexical decision paradigm. Masking the prime stimulus in white noise resulted in reduced semantic priming for both groups, indicating that lexical access is degraded by nonlinguistic white noise distortion. However, talker variation within a prime-target pair had no effect upon the performance of either the normal or aphasic individuals. The absence of a talker variation effect suggests that voice-specific information is not encoded in the lexical representations of words. The normal performance of Broca's aphasics under conditions of both white noise and talker variation supports the view that these patients have a lexical processing impairment rather than a more generalized language deficit characterized by limited computational resources.     

Syntactic frame and verb bias in aphasia: plausibility judgments of undergoer-subject sentences

This study investigates three factors that have been argued to define "canonical form" in sentence comprehension: Syntactic structure, semantic role, and frequency of usage. We first examine the claim that sentences containing unaccusative verbs present difficulties analogous to those of passive sentences. Using a plausibility judgment task, we show that a mixed group of aphasics performed significantly better on unaccusatives than on passives. We then turn to the observation that passives are generally harder than actives for aphasics. We show that this effect is modulated by lexical bias, i.e., the likelihood that a verb appears in a given syntactic structure: Passives of passive-bias verbs were significantly easier than passives of active-bias verbs. More generally, sentences whose structure matches the lexical bias of the main verb are significantly easier than sentences in which structure and lexical bias do not match. These findings suggest that "canonical form" reflects frequency and lexical biases.     

“Social Separation” Among Women Under 40 Years of Age Diagnosed with Breast Cancer and Carrying a BRCA1 or BRCA2 Mutation

We conducted an exploratory, qualitative study investigating experiences of women who had developed breast cancer under the age of 40 and who were identified as BRCA1 or BRCA2 mutation carriers. These germline mutation carriers face an increased lifetime risk of a second primary breast cancer and an increased risk for a primary ovarian cancer. Thirteen women who fit this criteria participated in three focus groups conducted at a major cancer center in the UK during Spring 2003. We asked broad, open-ended questions that allowed for a wide range of responses about their cancer and genetic testing experiences, physical and psycho-social concerns, family and partner reactions and their need for social support. The women expressed feelings of devastation, loneliness, feeling different and isolation, ambivalence about having to support family members, worries about partner’s anxiety and depression, and anxiety about talking to family members, especially children. These feelings were stronger after the cancer diagnosis and compounded by the genetic test results that occurred at a later time. We also found that, at least temporarily, the women experienced what we call “social separation”—emotional distance from, or dissonance with groups they interact with or are part of, e.g., family and friends, frequently leading to a reduction in communication or a change in previously unstated, but accepted normal interaction. We concentrate on a few characteristics of social separation—feelings of aloneness, isolation and separation, use of silence and verbal discretion, the relationship between estrangement and kinship interaction and norm disruption, and are looking at social patterns of interpersonal relationships that may occur when risk and illness statuses are new and framing and feeling rules have not as yet been clearly developed due to a cultural lag.     

Neonatal encephalopathy in the term infant: neuroimaging and inflammatory cytokines

The interrelationship between inflammation and ischemia is complex and poorly understood in the developing nervous system. In the preterm newborn, maternal infection may predispose to white matter injury and may be associated with cytokine elevation. In the term infant, few studies exist linking elevation of cytokines with encephalopathy and poor neurodevelopmental outcome. This review discusses the interplay among inflammatory cytokines, neonatal encephalopathy, and neuroimaging parameters.     

The child abusing family: I. Methodological issues and parent-related characteristics of abusing families

Abstract

The physical abuse of children by their parents is a family matter and should be viewed within the context of the family unit. Unfortunately, few child abuse studies have directly examined the family unit. Rather, most studies focus on characteristics of individual members of abusing families or on dyadic relationships within abusing families. Therefore, the present paper examines the family-related variables that might contribute to child abuse. This review is divided into two parts. Part I discusses methodological considerations and parent-related aspects of abusing families, including: characteristics of abusing parents, childhood experiences of abusing parents, marital relationships of abusing parents and the perceptions and expectations that abusing parents have of their abused children. Part II of this review, which will appear in a later issue, will cover child-related aspects of abusing families, parent-child interactions in these families, environmental conditions associated with child abuse and typologies of abusing families.     

Childhood Sexual Abuse and Intimate Partner Violence in a Clinical Sample of Men: The Mediating Roles of Adult Attachment and Anger Management

This study examined the association between men’s experience of childhood sexual abuse and later perpetration of intimate partner violence, considering the roles of attachment insecurity and poor anger regulation. The sample was 302 Canadian men undergoing counseling for relationship difficulties or aggression. They completed questionnaires assessing childhood sexual abuse, the two dimensions of attachment insecurity (anxiety and avoidance), anger regulation processes, physical and psychological aggression, and social desirability bias. Path analyses showed that men who experienced childhood sexual abuse scored higher on attachment anxiety, which in turn was associated with aggressive behaviors directly and through four anger-related variables (trait anger, anger-in, anger-out, and low anger control). Attachment-related avoidance predicted psychological aggression, but not physical aggression, through men’s trait anger and anger-in.     

Attachment Anxiety,Depressive Symptoms,and Adolescent Dating Violence Perpetration: A Longitudinal Mediation Analysis

Adolescent dating violence (ADV) is a prevalent public health issue that has been linked to many negative effects, including attachment anxiety and depressive symptoms. Previous literature suggests that the negative mental states characteristic of attachment anxiety could be associated with dating violence perpetration. Similarly, the negative mental states characteristic of depression have also been linked to perpetration, and might potentially increase an anxiously attached individual’s likelihood of engaging in dating violence perpetration. This study used a 10-month longitudinal design with a sample of 140 middle school and high school students from Southern California. Participants ranged in age from 13 to 18 years and were ethnically diverse. The study aimed at exploring depressive symptoms as a potential mediator for the relationship between attachment anxiety and ADV perpetration. Positive associations were found between attachment anxiety and perpetration (10 months after), attachment anxiety and depressive symptoms (10 months after), and between depressive symptoms and perpetration (both 10 months after). Furthermore, depressive symptoms partially mediated the relationship between attachment anxiety and ADV perpetration (10 months after). These findings have implications for the development of empirically driven school-based prevention and intervention programs.     

Talkativeness in Cognitively Normal Women at Genetic Risk for Alzheimer’s Disease

Previous research has suggested a correlation between some linguistic patterns and the risk for Alzheimer’s disease (AD). There is increasing clinical need to identify factors that can be used alone or in combination to predict the onset of AD. The purpose of the present study was to explore the association of language skills and genetic risk for Alzheimer’s disease. Oral and written language samples of cognitively normal women with a susceptibility gene for AD (ApoE e4) were compared to those of noncarriers on measures of grammatical complexity, topic relevance, and talkativeness by observers unaware of participant genotypes. Participants included 29 ApoE e4 carriers 49-73 years of age, and 29 e4 noncarriers 48-76 years of age, most of whom had a first-degree relative with AD. Carriers and noncarriers were group matched for age, educational level, and estimated IQ. Participant groups did not differ significantly in language complexity or topic relevance. However, the ApoE e4 group was significantly more talkative than the noncarrier group (p < .05).     

Chimpanzees (Pan troglodytes) transfer tokens repeatedly with a partner to accumulate rewards in a self-control task

There has been extensive research investigating self-control in humans and nonhuman animals, yet we know surprisingly little about how one’s social environment influences self-control. The present study examined the self-control of chimpanzees in a task that required active engagement with conspecifics. The task consisted of transferring a token back and forth with a partner animal in order to accumulate food rewards, one item per token transfer. Self-control was required because at any point in the trial, either chimpanzee could obtain their accumulated rewards, but doing so discontinued the food accumulation and ended the trial for both individuals. Chimpanzees readily engaged the task and accumulated the majority of available rewards before ending each trial, and they did so across a number of conditions that varied the identity of the partner, the presence/absence of the experimenter, and the means by which they could obtain rewards. A second experiment examined chimpanzees’ self-control when given the choice between immediately available food items and a potentially larger amount of rewards that could be obtained by engaging the token transfer task with a partner. Chimpanzees were flexible in their decision-making in this test, typically choosing the option representing the largest amount of food, even if it involved delayed accumulation of the rewards via the token transfer task. These results demonstrate that chimpanzees can exhibit self-control in situations involving social interactions, and they encourage further research into this important aspect of the self-control scenario.     

Visual nesting of stimuli affects rhesus monkeys’ (Macaca mulatta) quantity judgments in a bisection task

Nonhuman animals are highly proficient at judging relative quantities presented in a variety of formats, including visual, auditory, and even cross-modal formats. Performance typically is constrained by the ratio between sets, as would be expected under Weber’s law and as is described in the approximate number system (ANS) hypothesis. In most cases, tests are designed to avoid any perceptual confusion for animals regarding the stimulus sets, but despite this, animals show some of the perceptual biases that humans show based on organization of stimuli. Here, we demonstrate an additional perceptual bias that emerges from the illusion of nested sets. When arrays of circles were presented on a computer screen and were to be classified as larger than or smaller than an established central value, rhesus monkeys (Macaca mulatta) underestimated quantities when circles were nested within each other. This matched a previous report with adult humans (Chesney & Gelman, Attention, Perception, & Psychophysics 24:1104–1113, 2012), indicating that macaques, like humans, show the pattern of biased perception predicted by ANS estimation. Although some macaques overcame this perceptual bias, demonstrating that they could come to view nested stimuli as individual elements to be included in the estimates of quantity used for classifying arrays, the majority of the monkeys showed the bias of underestimating nested arrays throughout the experiment.