Parametrically Dissociating Speech and Nonspeech Perception in the Brain Using fMRI

Candidate brain regions constituting a neural network for preattentive phonetic perception were identified with fMRI and multivariate multiple regression of imaging data. Stimuli contrasted along speech/nonspeech, acoustic, or phonetic complexity (three levels each) and natural/synthetic dimensions. Seven distributed brain regions' activity correlated with speech and speech complexity dimensions, including five left-sided foci [posterior superior temporal gyrus (STG), angular gyrus, ventral occipitotemporal cortex, inferior/posterior supramarginal gyrus, and middle frontal gyrus (MFG)] and two right-sided foci (posterior STG and anterior insula). Only the left MFG discriminated natural and synthetic speech. The data also supported a parallel rather than serial model of auditory speech and nonspeech perception.     

Reviews: Books

ZEN MASTERS: A MAVERICK, A MASTER OF MASTERS, AND A WANDERING POET. By John Stevens, 161 pp. Kodansha International: Tokyo/NY/London, 1999. $13.00. THE DEVELOPING MIND: TOWARD A NEUROBIOLOGY OF INTERPERSONAL EXPERIENCE. By Daniel J. Siegel. 394 pp. New York: The Guilford Press, 1999. $37.95. JESUS: A PSYCHOLOGICAL BIOGRAPHY. By Donald Capps. 288 pp. St. Louis: Chalice Press, 2000. $29.99.     

Unconscious choice: the dissociation of creative animus among writers and psychotherapists

The paper argues that writers and psychotherapists are drawn to their work through the desire to remedy an unconscious sense of lack brought about by early relational trauma. Often, because of its origins in psychic pain, the connection between these individuals' beginnings and their profession remains largely dissociated. The theme is developed with reference to the idea of the wounded healer taken up by Jung. It is proposed that the original wound is also the crack that lets the light in: a dissociated tough spirit that can be channelled into discriminating countertransference and strong writing. This paper is implicitly arguing against an objective or neutral analytic stance, and for the therapeutic and creative value of acquaintance with negative affect.     

I get so lonely,baby: The effects of loneliness and social isolation on romantic dependency

Individuals lacking fulfilling interpersonal interactions may experience feelings of loneliness. Consequently, these individuals may over-rely on their romantic partners to fulfill the need to belong. This study examined the effects of loneliness and social isolation on dependency on a romantic partner in a sample of college students (N = 104). Participants who were in a romantic relationship completed measures of loneliness, social isolation, and romantic dependency near the beginning of the semester (Time 1) and approximately 6 weeks later toward the end of the semester (Time 2). Toward the beginning of the semester, there were no significant predictors of dependency. Toward the end of the semester, individuals who reported higher social isolation reported higher levels of dependency. Time 1 dependency also predicted Time 2 dependency. Future methodological directions and suggestions regarding the examination of perceptions of loneliness and relationship expectations are discussed.     

Grammaticality,Acceptability, and Probability: A Probabilistic View of Linguistic Knowledge

The question of whether humans represent grammatical knowledge as a binary condition on membership in a set of well‐formed sentences, or as a probabilistic property has been the subject of debate among linguists, psychologists, and cognitive scientists for many decades. Acceptability judgments present a serious problem for both classical binary and probabilistic theories of grammaticality. These judgements are gradient in nature, and so cannot be directly accommodated in a binary formal grammar. However, it is also not possible to simply reduce acceptability to probability. The acceptability of a sentence is not the same as the likelihood of its occurrence, which is, in part, determined by factors like sentence length and lexical frequency. In this paper, we present the results of a set of large‐scale experiments using crowd‐sourced acceptability judgments that demonstrate gradience to be a pervasive feature in acceptability judgments. We then show how one can predict acceptability judgments on the basis of probability by augmenting probabilistic language models with an acceptability measure. This is a function that normalizes probability values to eliminate the confounding factors of length and lexical frequency. We describe a sequence of modeling experiments with unsupervised language models drawn from state‐of‐the‐art machine learning methods in natural language processing. Several of these models achieve very encouraging levels of accuracy in the acceptability prediction task, as measured by the correlation between the acceptability measure scores and mean human acceptability values. We consider the relevance of these results to the debate on the nature of grammatical competence, and we argue that they support the view that linguistic knowledge can be intrinsically probabilistic.     

Profiles of Children’s Thinking About Violence in Families Exposed to Intimate Partner Violence

Intimate partner violence remains a pervasive and common social problem. Evidence indicates that children witness many instances of intimate partner violence. However, the structure of children’s thinking about family violence is still not well understood. This research employed latent profile analysis to identify underlying latent profiles of children’s thinking about violence using the Attitudes and Beliefs About Violence Scale. The analysis identified two latent profiles mostly differentiated by children’s beliefs about whether or not victims of violence deserve to have violence inflicted upon them. Several covariates differentiated members of the two profiles. Suggestions for intervention and practice are included.     

Serotonin enhances the impact of health information on food choice

Serotonin has been implicated in promoting self-control, regulation of hunger and physiological homeostasis, and regulation of caloric intake. However, it remains unclear whether the effects of serotonin on caloric intake reflect purely homeostatic mechanisms, or whether serotonin also modulates cognitive processes involved in dietary decision making. We investigated the effects of an acute dose of the serotonin reuptake inhibitor citalopram on choices between food items that differed along taste and health attributes, compared with placebo and the noradrenaline reuptake inhibitor atomoxetine. Twenty-seven participants attended three sessions and received single doses of atomoxetine, citalopram, and placebo in a double-blind randomised cross-over design. Relative to placebo, citalopram increased choices of more healthy foods over less healthy foods. Citalopram also increased the emphasis on health considerations in decisions. Atomoxetine did not affect decision making relative to placebo. The results support the hypothesis that serotonin may influence food choice by enhancing a focus on long-term goals. The findings are relevant for understanding decisions about food consumption and also for treating health conditions such as eating disorders and obesity.     

Union commitment and participation: a 10-year longitudinal study

The authors longitudinally investigated the causal nature of the relationship between union commitment and participation in informal union activities. A total of 134 members of the National Association of Letter Carriers were studied over a 10-year period. Using cross-lagged regression analysis, early union commitment was found to predict the level of informal union participation 10 years later. The reverse and reciprocal relationships were not supported. These findings support and extend earlier research on the causal nature of the short-term relationship between union commitment and participation. The implications of the findings for researchers and labor unions are discussed.     

First record: a methodological approach to counter sampling bias

One goal of survey research is to optimize sampling procedures so that the collected data will produce accurate population estimates. In this context, sampling bias is a primary threat to a study's validity. If individuals who do not respond are a random sample of the population, then the estimates obtained from such a subsample are unbiased. However, as the percentage of nonrespondents increases, the assumption of unbiased estimation becomes increasingly tenuous. At this point an investigator has two choices: delete all subjects who have not provided data as part of the first data collection, or allow a respondent's point of entry to define his baseline measures for the study. No previous discussion of the latter option has been noted in the methods literature. Therefore the authors have termed this approach to baseline the "first record". Conditions under which the "first record" technique would be appropriate or inappropriate are discussed.     

Comparison of two procedures for teaching dictated-word/symbol relations to learners with autism

The efficacy of exclusion and delayed-cue procedures for establishing novel dictated-word/symbol relations with 2 boys with autism was compared using computerized match-to-sample procedures. Acquisition of the relations under the two training conditions was compared via an alternating treatments design. The delayed-cue procedure was more efficacious than the exclusion procedure in four of five comparisons across participants.