A Computational Evaluation of Sentence Processing Deficits in Aphasia

Individuals with agrammatic Broca's aphasia experience difficulty when processing reversible non‐canonical sentences. Different accounts have been proposed to explain this phenomenon. The Trace Deletion account (Grodzinsky, 1995, 2000, 2006) attributes this deficit to an impairment in syntactic representations, whereas others (e.g., Caplan, Waters, Dede, Michaud, & Reddy, 2007; Haarmann, Just, & Carpenter, 1997) propose that the underlying structural representations are unimpaired, but sentence comprehension is affected by processing deficits, such as slow lexical activation, reduction in memory resources, slowed processing and/or intermittent deficiency, among others. We test the claims of two processing accounts, slowed processing and intermittent deficiency, and two versions of the Trace Deletion Hypothesis (TDH), in a computational framework for sentence processing (Lewis & Vasishth, 2005) implemented in ACT‐R (Anderson, Byrne, Douglass, Lebiere, & Qin, 2004). The assumption of slowed processing is operationalized as slow procedural memory, so that each processing action is performed slower than normal, and intermittent deficiency as extra noise in the procedural memory, so that the parsing steps are more noisy than normal. We operationalize the TDH as an absence of trace information in the parse tree. To test the predictions of the models implementing these theories, we use the data from a German sentence—picture matching study reported in Hanne, Sekerina, Vasishth, Burchert, and De Bleser (2011). The data consist of offline (sentence‐picture matching accuracies and response times) and online (eye fixation proportions) measures. From among the models considered, the model assuming that both slowed processing and intermittent deficiency are present emerges as the best model of sentence processing difficulty in aphasia. The modeling of individual differences suggests that, if we assume that patients have both slowed processing and intermittent deficiency, they have them in differing degrees.     

Beyond the Mainstreams

My interest in the theory and art of psychoanalysis is traced to some of its sources—my childhood and expulsion from Germany in the late 1930s, my experience as a member of a discriminated-against minority, my nonacceptance as a psychologist by American psychoanalytic societies, my invitation to participate in the development of self psychology, and my fortuitous encounter with personal and professional friends who have contributed to the scope of my psychoanalytic endeavors (e.g., to my abiding interest in research and, in particular, the empirical studies of the early mother–infant dyad). I offer this account as evidence of the varied and creative opportunities that await psychoanalysts not outside but beyond the mainstream of American psychoanalysis.     

FRIENDLY OR SEXY?

A set of three studies replicated and extended Abbey's (1982) research, indicating that men perceive less friendliness, but more sexuality than women when observing women's social interactions. Study 1 was based on 49 previously unacquainted male-female pairs who engaged in brief face-to-face discussions, and 48 males and 61 females who observed one of those discussions. Study 2 was based on videotaped exchanges between a male store manager and a female cashier, and Study 3 between a male professor and a female student; 75 males and 88 females participated in Study 2, while 98 males and 102 females participated in Study 3. In all three studies, the men saw less friendliness, but more sexiness in the woman's behavior than the women. These results support the idea that some of the less severe forms of sexual harassment in business and academic settings may be better understood eventually through research and theory development that considers these sex differences in social perceptions.     

GENDER'S ROLE IN RESPONSES TO INFERTILITY

Infertility is a major life stressor that affects approximately 10% of U.S. married couples. Infertile women and men have reported experiencing depression, helplessness, and marital strain. Given U.S. society's emphasis on women's role as mothers, it has been suggested that women's lives are more disrupted by infertility than those of men. This hypothesis was supported in a survey of 185 infertile couples and 90 presumed fertile couples. Infertile wives, as compared to their husbands, perceived their fertility problem as more stressful, felt more responsible for and in control of their infertility, and engaged in more problem-focused coping. Infertile husbands experienced more home life stress and lower home life performance than did their wives. These differences were not found for presumed fertile couples. Both infertile and presumed fertile wives experienced more depression, more sexual dissatisfaction, and lower self-esteem than did their husbands. Theoretical and counseling implications of these findings are discussed.     

High school bullying as a risk for later depression and suicidality

This is the first study to examine whether high school students experiencing frequent bullying behaviors are at risk for later depression and suicidality. A total of 236 students who reported frequent bullying behavior without depression or suicidality during a suicide screening were interviewed 4 years later to reassess depression, suicidal ideation, attempts, substance problems, and functional impairment and were compared to at‐risk youth identified during the screen, including 96 youth who also experienced bullying behavior. Youth who only reported frequent bullying behaviors (as bullies, victims, or both) did not develop later depression or suicidality and continued to have fewer psychiatric problems than students identified as at‐risk for suicide. Students who experienced bullying behaviors and depression or suicidality were more impaired 4 years later than those who had only reported depression or suicidality. Thus, assessment of bullying behaviors in screening protocols is recommended.     

Effects of maternal unavailability on mother-infant interactions

To determine the differential effects of maternal emotional and physical unavailability on infant interaction behavior, 4-month-old infants were subjected to the mothers' still-face and to a brief separation from the mother. Although the infants became more negative and agitated during both conditions, the still-face was more stressful.