Test-Retest Reliability of the Spanish Version of the Diagnostic Interview Schedule for Children (DISC-IV)

The test-retest reliability of the Spanish Diagnostic Interview Schedule for Children (DISC-IV) is presented. This version was developed in Puerto Rico in consultation with an international bilingual committee, sponsored by NIMH. The sample (N = 146) consisted of children recruited from outpatient mental health clinics and a drug residential treatment facility. Two different pairs of nonclinicians administered the DISC twice to the parent and child respondents. Results indicated fair to moderate agreement for parent reports on most diagnoses. Relatively similar agreement levels were observed for last month and last year time frames. Surprisingly, the inclusion of impairment as a criterion for diagnosis did not substantially change the pattern of results for specific disorders. Parents were more reliable when reporting on diagnoses of younger (4–10) than older children. Children 11–17 years old were reliable informants on disruptive and substance abuse/dependence disorders, but unreliable for anxiety and depressive disorders. Hence, parents were more reliable when reporting about anxiety and depressive disorders whereas children were more reliable than their parents when reporting about disruptive and substance disorders.     

Spoken Language Outcomes after Hemispherectomy: Factoring in Etiology

We analyzed postsurgery linguistic outcomes of 43 hemispherectomy patients operated on at UCLA. We rated spoken language (Spoken Language Rank, SLR) on a scale from 0 (no language) to 6 (mature grammar) and examined the effects of side of resection/damage, age at surgery/seizure onset, seizure control postsurgery, and etiology on language development. Etiology was defined as developmental (cortical dysplasia and prenatal stroke) and acquired pathology (Rasmussen's encephalitis and postnatal stroke). We found that clinical variables were predictive of language outcomes only when they were considered within distinct etiology groups. Specifically, children with developmental etiologies had lower SLRs than those with acquired pathologies (p =.0006); age factors correlated positively with higher SLRs only for children with acquired etiologies (p =.0006); right-sided resections led to higher SLRs only for the acquired group (p =.0008); and postsurgery seizure control correlated positively with SLR only for those with developmental etiologies (p =.0047). We argue that the variables considered are not independent predictors of spoken language outcome posthemispherectomy but should be viewed instead as characteristics of etiology.     

Phonology: A Review and Proposals from a Connectionist Perspective

A parallel distributed processing (PDP) model of phonological processing is developed, including components to support repetition, auditory processing, comprehension, and language production. From the performance of the PDP reading model of Plaut, McClelland, Seidenberg, and Patterson (1996), it is inferred that the acoustic-articulatory motor pattern associator that supports repetition provides the basis for phonological sequence knowledge. From the observation that many patients make phonemic paraphasic errors in language production, as in repetition, it is argued that there must be a direct link between distributed concept representations (lexical semantic knowledge) and this network representation of sequence knowledge. In this way, both lexical semantic and phonotactic constraints are brought to bear on language production. The literature on phonological function in normal subjects (slip-of-the-tongue corpora) and in patients with aphasia is critically reviewed from this perspective. The relationship between acoustic and articulatory motor representations in the process of phonetic perception is considered. Repetition and reproduction conduction aphasia are reviewed in detail and extended consideration is given to the representation of auditory verbal short-term memory in the model. Finally, the PDP model is reconciled with information processing models of phonological processing, including that of Lichtheim, and with current knowledge of the anatomic localization of phonological processing. Although no simulations of the model were run, a number of simulation studies are proposed.     

Affordance Compatibility Effect for Word Learning in Virtual Reality

Rich sensorimotor interaction facilitates language learning and is presumed to ground conceptual representations. Yet empirical support for early stages of embodied word learning is currently lacking. Finding evidence that sensorimotor interaction shapes learned linguistic representations would provide crucial support for embodied language theories. We developed a gamified word learning experiment in virtual reality in which participants learned the names of six novel objects by grasping and manipulating objects with either their left or right hand. Participants then completed a word–color match task in which they were tested on the same six words and objects. Participants were faster to respond to stimuli in the match task when the response hand was compatible with the hand used to interact with the named object, an effect we refer to as affordance compatibility. In two follow up experiments, we found that merely observing virtual hands interact with the objects was sufficient to acquire a smaller affordance compatibility effect, and we found that the compatibility effect was driven primarily by responses with a compatible hand and not by responses in a compatible spatial location. Our results support theoretical views of language which ground word representations in sensorimotor experiences, and they suggest promising future routes to explore the sensorimotor foundations of higher cognition through immersive virtual experiments.     

Interpersonal Understanding Fuels Knowledge Acquisition

Beginning in infancy, humans acquire knowledge at a pace far outstripping that found in any other species. Recent evidence indicates that interpersonal understanding—in particular, skill at inferring others' intentions—plays a pivotal role in this achievement. Infants as young as 12 to 18 months actively utilize clues to others' intentions to guide their interpretation of language, emotion, and action more generally. In the language domain, for example, on hearing a new word, infants spontaneously check the speaker for intentional clues such as gaze direction, emotional expression, gestures, and body posture, and interpret the word in light of such information. By capitalizing on information about intentions, infants are able to avoid a wide range of potential errors, and to quickly learn relevant new skills. Current research is exploring the origins and developmental course of such early-emerging interpersonal skill, ultimately with an eye to understanding how disruptions in such abilities affect children's cognitive and social development.     

The Possibility of Meaning in Human Evolution

Science undermines the certitude of non-naturalistic answers to the question of whether human life has meaning. I explore whether evolution can provide a naturalistic basis for existential meaning. Using the work of philosopher Daniel Dennett and scientist Ursula Goodenough, I argue that evolution is the locus of the possibility of meaning because it has produced intentionality, the matrix of consciousness. I conclude that the question of the meaning of human life is an existentialist one: existential meaning is a product of the individual and collective tasks human beings undertake.     

New Directions in Ethics: Naturalisms, Reasons and Virtue

This paper discusses three topics in contemporary British ethical philosophy: naturalisms, moral reasons, and virtue. Most contemporary philosophers agree that 'ethics is natural' - in Section 1 I examine the different senses that can be given to this idea, from reductive naturalism to supernaturalism, seeking to show the problems some face and the problems others solve. Drawing on the work of John McDowell in particular, I conclude that an anti-supernatural non-reductive naturalism plausibly sets the limits on what we can do in ethics. Moral reasons are widely discussed - in Section 2 I describe some of the criteria that used to distinguish moral practical reasons, and note possibilities and problems. Drawing on the work of Elizabeth Anscombe in particular, I suggest that an inclusive, minimalist account of moral reasons may be most fruitful. There has been a revival of philosophical interest in virtue ethics, which I take to be linked to the emergence of non-reductive naturalisms - in Section 3 I describe three points where virtue ethics has an especially significant contribution to make: learning, motivational self-sufficiency, and the question of whether virtues can be reasons. The naturalism of Section 1 constrains the accounts of moral reasons considered in Section 2, and depends upon an account of virtue as learned second nature, discussed in Section 3.     

汉语成语产生中的语法结构启动效应

以60名汉语言专业本科生为被试,采用改进后的瞬时回忆范式,探讨汉语四字格成语产生中的语法结构启动效应。结果表明,无论启动成语和目标成语的语素结构是否相同,只要两者语步结构相同,就会在汉语成语产生中出现语法结构启动效应。本结果初步表明,在结构较为凝固的汉语四字格成语产生过程中也存在着语法生成与选择过程,这种语法生成与选择过程主要来自汉语成语的语步结构,是一种抽象的语法结构的生成。