INCIDENTAL LANGUAGE LEARNING:

Abstract —Two experiments investigated the performance of first-grade children and adults on an incidental language-learning task. Learning entailed word segmentation from continuous speech, an initial and crucial component of language acquisition. Subjects were briefly exposed to an unsegmented artificial language, presented auditorily, in which the only cues to word boundaries were the transitional probabilities between syllables. Subjects were not told that they were listening to a language, or even to listen at all; rather, they were engaged in a cover task of creating computer illustrations. Both adults and children learned the words of the language. Moreover, the children performed as well as the adults. These data suggest that a statistical learning mechanism (transitional probability computation) is able to operate incidentally and, surprisingly, as well in children as in adults.     

Neuropsychological aspects of facial asymmetry during emotional expression: A review of the normal adult literature

This review focuses on facial asymmetries during emotional expression. Facial asymmetry is defined as the expression intensity or muscular involvement on one side of the face (“hemiface”) relative to the other side and has been used as a behavioral index of hemispheric specialization for facial emotional expression. This paper presents a history of the neuropsychological study of facial asymmetry, originating with Darwin. Both quantitative and qualitative aspects of asymmetry are addressed. Next, neuroanatomical bases for facial expression are elucidated, separately for posed/voluntary and spontaneous/involuntary elicitation conditions. This is followed by a comprehensive review of 49 experiments of facial asymmetry in the adult literature, oriented around emotional valence (pleasantness/unpleasantness), elicitation condition, facial part, social display rules, and demographic factors. Results of this review indicate that the left hemiface is more involved than the right hemiface in the expression of facial emotion. From a neuropsychological perspective, these findings implicate the right cerebral hemisphere as dominant for the facial expression of emotion. In spite of the compelling evidence for right-hemispheric specialization, some data point to the possibility of differential hemispheric involvement as a function of emotional valence. An earlier version of this paper by the first author was presented at the XV Annual Symposium of the Society of Craniofacial Genetics, July 12, 1992, Stanford University, Palo Alto, CA.     

A Closer Look at the Role of Applicant Age in Selection Decisions

Participants evaluated hypothetical applicants recruited from a younger (university students) or older (American Association of Retired Persons) population for 2 young-typed jobs, one more strongly young-typed than the other. Participants were given applicant information, including age and personal characteristics, that varied in the extent to which it was consistent with raters' job stereotypes. Results indicated that younger applicants were evaluated more favorably than older applicants. However, an Applicant Age × Job interaction effect indicated that the older applicant was evaluated less favorably for the more strongly compared with the less strongly young-typed job. In addition. applicants whose personal characteristics (other than age) were more consistent with raters' job stereotypes were evaluated more favorably than applicants whose characteristics were less consistent. Results also indicated that applicant age and personal characteristics interacted to influence applicant evaluations. The implications of these and other study results are discussed.     

Sequential sampling models of human text classification

Text classification involves deciding whether or not a document is about a given topic. It is an important problem in machine learning, because automated text classifiers have enormous potential for application in information retrieval systems. It is also an interesting problem for cognitive science, because it involves real world human decision making with complicated stimuli. This paper develops two models of human text document classification based on random walk and accumulator sequential sampling processes. The models are evaluated using data from an experiment where participants classify text documents presented one word at a time under task instructions that emphasize either speed or accuracy, and rate their confidence in their decisions. Fitting the random walk and accumulator models to these data shows that the accumulator provides a better account of the decisions made, and a “balance of evidence” measure provides the best account of confidence. Both models are also evaluated in the applied information retrieval context, by comparing their performance to established machine learning techniques on the standard Reuters‐21578 corpus. It is found that they are almost as accurate as the benchmarks, and make decisions much more quickly because they only need to examine a small proportion of the words in the document. In addition, the ability of the accumulator model to produce useful confidence measures is shown to have application in prioritizing the results of classification decisions.     

Using the Research Domain Criteria Framework to Explore Associations Between MMPI–2–RF Constructs and Physiological Variables Assessed by Eye-Tracker Technology

The National Institute of Mental Health has proposed a paradigm shift in the conceptualization of psychopathology, abandoning the traditional categorical model in favor of one based on hierarchically organized dimensional constructs (Insel et al., 2010 Insel, T., Cuthbert, B., Garvey, M., Heinssen, R., Pine, D. S., Quinn, K., … Wang, P. (2010). Research domain criteria (RDoC): Toward a new classification framework for research on mental disorders. American Journal of Psychiatry, 167, 748–751.[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]). One explicit goal of this initiative, the Research Domain Criteria (RDoC) project, is to facilitate the incorporation of newly available neurobiologic variables into research on psychopathology. The Minnesota Multiphasic Personality Inventory–2–Restructured Form (MMPI–2–RF; Ben-Porath &; Tellegen, 2008/2011 Ben-Porath, Y., &; Tellegen, A. (2011). Minnesota Multiphasic Personality Inventory–Restructured Form: Manual for administration, scoring, and interpretation. Minneapolis: University of Minnesota Press. (Original work published 2008) [Google Scholar]) represents a similar paradigm shift, also adopting a hierarchical arrangement of dimensional constructs. This study examined associations between MMPI–2–RF measures of psychopathology and eye-movement metrics. Participants were college students (n = 270) who completed the MMPI–2–RF and then viewed a sequence of 30-s video clips. Results show a pattern of positive correlations between pupil size and emotional/internalizing dysfunction scales when viewing video eliciting negative emotional reactions, reflecting greater arousability in individuals with higher scores on these measures. In contrast, when viewing stimuli depicting angry, threatening material, a clear pattern of negative correlations was found between pupil size and behavioral/externalizing trait measures. These data add to the construct validity of the MMPI–2–RF and support the use of the RDoC matrix as a framework for research on psychopathology.     

Associations between childhood adversity and daily suppression and avoidance in response to stress in adulthood: can neurobiological sensitivity help explain this relationship?

Background and objectives: Although it has been postulated that psychological responses to stress in adulthood are grounded in childhood experiences in the family environment, evidence has been inconsistent. This study tested whether two putative measures of neurobiological sensitivity (vagal flexibility and attentional capacity) moderated the relation between women’s reported exposure to a risky childhood environment and current engagement in suppressive or avoidant coping in response to daily stress.

Design and methods: Adult women (N?=?158) recruited for a study of stress, coping, and aging reported on early adversity (EA) in their childhood family environment and completed a week-long daily diary in which they described their most stressful event of the day and indicated the degree to which they used suppression or avoidance in response to that event. In addition, women completed a visual tracking task during which heart rate variability and attentional capacity were assessed.

Results: Multilevel mixed modeling analyses revealed that greater EA predicted greater suppression and avoidance only among women with higher attentional capacity. Similarly, greater EA predicted greater use of suppression, but only among women with greater vagal flexibility.

Conclusion: Childhood adversity may predispose individuals with high neurobiological sensitivity to a lifetime of maladaptive coping.     

Time Costs for Genetic Counseling in Preconception Carrier Screening with Genome Sequencing

Advances in technology and the promise of personalized health care are driving greater use of genome sequencing (GS) for a variety of clinical scenarios. As health systems consider adopting GS, they need to understand the impact of GS on the organization and cost of care. While research has documented a dramatic decrease in the cost of sequencing and interpreting GS, few studies have examined how GS impacts genetic counseling workloads. This study examined the time needed to provide genetic counseling for GS in the context of preconception carrier screening. Genetic counselors prospectively reported on the time spent in the results disclosure process with 107 study participants who were part of the NextGen study. We found that the median time for results disclosure was 64 min (ranged from 5 to 229 min). Preparation work was the most time-consuming activity. Qualitative data from journal entries, debrief interviews with genetic counselors, and detailed case conference notes provided information on factors influencing time for results disclosure and implications for practice. Results suggest that expanded carrier screening could require significant increases in genetic counseling time, unless we are able to generate new resources to reduce preparation work or develop other strategies such as the creation of new models to deliver this type of service.     

The Positive Plus Program: Affirmative classroom management to improve student behavior

This study describes the Positive Plus Program, a multicomponent intervention combining behavior‐specific praise with an interdependent group contingency and teacher feedback. An elementary school teacher wanting to improve her classroom management skills implemented the Positive Plus Program. Four second‐grade students participated in the study, and each of the students emitted disruptive behavior in class previously. This study, using an ABAB design, indicated that when the teacher reliably delivered high levels of behavior‐specific praise and awarded points, disruptive behavior was less likely. Student outcomes showed increased academic engagement and decreased off‐task motor and verbal behavior from pre‐ to post‐intervention. Teacher ratings indicated high levels of social validity. In light of these findings, implications for future research and implementation are discussed.     

Child Victims' Attributions about Being Physically Abused: An Examination of Factors Associated with Symptom Severity

The goal of the present study was to examine a conceptual attributional model for the development of psychopathology after child physical abuse. Physically abused or maltreated children referred for treatment completed a series of measures to assess parent-to-child violence, abuse-specific attributions and general attributional style, other potential predictors, and children's psychopathology. Results revealed that the severity of current parent-to-child violence was associated with children's internalizing and externalizing symptoms. Attributions predicted the level of children's psychopathology beyond the variance accounted for by the severity of parent-to-child violence. The severity of parent-to-child violence, attributions about the abuse, general attributional style, and level of family functioning accounted for 28%–63% of the variance in children's abuse-specific, internalizing, and externalizing symptoms. Implications of the findings and research recommendations are discussed.