The dark side of incremental learning: A model of cumulative semantic interference during lexical access in speech production

Naming a picture of a dog primes the subsequent naming of a picture of a dog (repetition priming) and interferes with the subsequent naming of a picture of a cat (semantic interference). Behavioral studies suggest that these effects derive from persistent changes in the way that words are activated and selected for production, and some have claimed that the findings are only understandable by positing a competitive mechanism for lexical selection. We present a simple model of lexical retrieval in speech production that applies error-driven learning to its lexical activation network. This model naturally produces repetition priming and semantic interference effects. It predicts the major findings from several published experiments, demonstrating that these effects may arise from incremental learning. Furthermore, analysis of the model suggests that competition during lexical selection is not necessary for semantic interference if the learning process is itself competitive.     

A Compelling Practice: Empowering Future Leaders in the Medical Humanities

Medical students and faculty explore the medical humanities for diverse reasons: as a medium for self-reflection, a means to cultivate professionalism and humanism, and a way to gain an appreciation for the broader contexts in which illness and health occur. One important area for development is increasing the exposure of learners and clinicians of various levels of training to the medical humanities and to role models in the field. Student-led programs in the medical humanities at the American Medical Student Association (AMSA) address these needs by offering unique opportunities for learning and sharing experiences. AMSA programs connect physicians-in-training using technology to create virtual communication and learning opportunities. These include monthly book discussion webinars, the Writers' Institute and the Medical Humanities Scholars Program (MHSP).     

The Psychoanalytic Study of the Child,Volume VI Edited by Ruth S. Eissler,Anna Freud,Heinz Hartmann,Ernst Kris

Abstract

The effect of affective group bibliotherapy (GB) was compared to affective group therapy (GT) on patients’ functioning in therapy and their session impression. Three small groups totaling twenty–five in–patients in a hospital in Israel participated in the study. Clients concurrently participated in both group types, undergoing three sessions in each condition. In–therapy behaviors were assessed through the Client Behavior System (CBS; Hill &; O’Brien, 1999). Results indicated that in the GB condition compared to the GT condition, clients showed less resistance, used simple responses less frequently, and expressed greater affective exploration. The Session Evaluation Questionnaire (SEQ; Stiles et al., 1994) was used to measure clients’ impressions of the sessions. Results indicated that patients evaluated the two treatment conditions equally. Overall, the results support earlier findings, suggesting that affective bibliotherapy can be an effective method of treatment.     

The Question of Higher Education for the Blind

Building on the theory of reasoned action (I. Ajzen & M. Fishbein, 1973, 1980; M. Fishbein & I. Ajzen, 1975) and expectancy theory, the authors examined the mediating role of alcohol expectancies in adolescent drinking behaviors by testing whether alcohol expectancy outcomes and valuations (the extent to which these outcomes are perceived as good or bad) mediate the association between peer influences and lifetime alcohol use. Early adolescents (N = 904) from 2 public middle schools in western Michigan completed a battery of questionnaires. Overall, results showed that alcohol expectancies and valuations partially mediated the relations between peer influences (peer use and peer approval) and lifetime alcohol use. The findings suggest that associating with peers who are perceived as using alcohol and approving of drinking may influence adolescents’ alcohol expectancies. The authors briefly discuss future research directions and implications for prevention.     

The Effects of Subject-and Experimenter-Induced Defensive Response Sets on Picture-Frustration Test Reactions

Thirty male college students, half scoring high and half low on the MMPI K-scale, were administered a multiple-choice (M-C) modification of the Rosenzweig P-F Study under three instructional sets. Two of these sets were induced by E and compared with the third which represented S's normal test-taking set. The two induced sets included (1) a “should” set in which concern for the social consequences of behavior was accentuated, and (2) a “wish” set in which concern for social consequences was minimized, and freedom of self-expression was accentuated.

It was hypothesized that Ss making extremely high or low scores on the K-scale would likewise score differently on the M-C, P-F test. High K, defined by its authors as a measure of test defensiveness, and low K, as test-taking candidness, would be associated with P-F score patterns reflecting these test-taking attitudes: High K Ss showing Impunitive (M) dominant reaction patterns and low K showing Extrapunitive (E) or Intropunitive (I) dominant patterns. These hypothèses were confirmed except that intropunitive responses were extremely rare in the entire subject sample.

It was further hypothesized that the typical high K pattern would be induced in low K Ss under the “should” instructional set and the low K pattern would be elicited from high K Ss under “wish” instructions. This expectation was confirmed. It was suggested that the technique of manipulating responses via test taking instructions can generate correction factors useful in projective as well as structured personality tests.     

The Number of Distinct Basic Values and Their Structure Assessed by PVQ–40

Sixty-eight outpatients from a veterans' administration psychiatry clinic and community mental health center were assessed with 3 measures of depressive personality disorder (DPD)-the Diagnostic Interview for Depressive Personality Disorder (Gunderson, Phillips, Triebwasser, &; Hirschfeld, 1994), the Depressive Personality Disorder Inventory (Huprich, Margrett, Barthelemy, &; Fine, 1996), and the Structured Clinical Interview for DSM-IV Axis II Disorders (First, Gibbon, Spitzer, Williams, &; Benjamin, 1997a)-to evaluate their convergent and discriminant validity. Evidence supporting the measures' validity was mixed. The rate of convergence of depressive personality diagnoses across 3 measures was less than optimal, but the degree of intercorrelation among the measures was strong. Although depressive personality scores had moderate levels of intercorrelations with other personality disorders, the degree of intercorrelation decreased substantially after controlling for depressive symptoms. I conclude that further work is needed to strengthen the validity of measures of DPD.     

Occupational Therapy Student Experiences and Transformations During Fieldwork in Mental Health Settings

The purpose of this study is to better understand the transformative experiences of occupational therapy students during fieldwork. In occupational therapy education, fieldwork provides students with an in-depth experience in the field. Thirty-one students submitted narratives following completion of Level II fieldwork in a mental health setting. Concepts from transformative learning theory guided the analysis. The themes that emerged were: (1) understanding clients with mental illness; (2) understanding occupation and occupational therapy; (3) feeling like a professional; and (4) changing as a person. The results highlight the importance of understanding the transformative process and fieldwork in mental health settings.