The Role of Concurrent Feedback in Learning to Walk Through Sliding Doors

Concurrent feedback is defined as information about performance given to participants during the execution of an action. This article investigates whether concurrent feedback is beneficial or detrimental to the learning of an ecologically relevant task. Eighteen participants were asked to walk through a virtual corridor and they practiced over 1110 trials to adjust their walking speed so as to pass through sliding doors that opened and closed at a frequency of 1 Hz. Concurrent feedback informed them about the possible need to accelerate or decelerate. Performance of participants who received concurrent feedback on 66% of the practice trials (on average) did not differ significantly from performance of participants who did not receive concurrent feedback. Furthermore, participants of both of these groups significantly outperformed participants who received concurrent feedback on all practice trials. These results are discussed in relation to the perceptual-motor mechanisms that underlie the control of the action. Also discussed are implications for future research, including the use of self-controlled feedback and the use of multisensory training programs.     

Direct Learning

The theory of direct perception holds that perception is specific to properties of ambient energy arrays. This article explores a similar approach to perceptual and perceptual-motor learning: Change due to learning is portrayed as specific to properties of ambient energy arrays. This type of learning is labeled direct learning. It is argued that a theory of direct learning explains a wide range of phenomena in ecologically relevant and informationally rich situations as well as in simpler experimental situations. Previous experimental results are reanalyzed and reinterpreted from the perspective of direct learning. To achieve this, the notion of information space is introduced. In information spaces, points represent ambient energy variables, paths represent change due to learning, and vector fields represent information that guides learning. These concepts also allow the theory of direct learning to be connected to and to take advantage of the theory of ordinary differential equations.     

Assessing Specific Effects of Inpatient Group Psychotherapy

Abstract

This article will examine how the psychoanalytic idea of containing can be used in group therapy to form a conceptual bridge such that the group dynamics are not simplistically reduced to individual dynamics, nor that the individual is lost in the “group–as–a–whole” concept. I take the concept of “containing” as versatile in the sense that Bion (1970) meant it to be—that is, the psychological phenomenon of containment is manifest at various system levels: intrapsychic, interpersonal, group, and societal. This article will explore how far this “bridging concept” can be pursued to understand groups theoretically. The article will review various forms of containing, following Bion’s ideas, and in particular a therapeutic, or flexible, form in contrast to rigid and fragile forms.     

Studies in the Peripheral Retina: I. The Purkinje After-Image

Maslow, A. H., Ed. New Knowledge in Human Values. New York: Harper, 1959. Pp. 268. Reviewed by Henry Winthrop.     

Understanding alexithymia in female adolescents: The role of attachment style

Adults with alexithymia retrospectively report emotional difficulties with caregivers during childhood. However, the association between attachment style and alexithymic traits may be evident at an earlier stage than adulthood, i.e. during adolescence. Sixty school-based healthy females aged 9–18 years (mean 14.08, SD 2.71 years) participated in an Attachment Style Interview (ASI) and completed the Toronto Alexithymia Scale (TAS-20). Greater levels of alexithymia were exhibited by both anxious and avoidant insecurely attached groups compared to securely attached participants. Fear of separation (characteristic of anxious attachment style) predicted both overall alexithymia scores and the specific alexithymic trait of ‘difficulty identifying feelings’ (DIF). Constraints on closeness (an avoidant attachment attitude) predicted ‘difficulty describing feelings’ (DDF). Low felt attachment to primary caregiver was a predictor of ‘externally oriented thinking’ (EOT). These findings indicate that features of anxious and avoidant insecure attachment styles are differentially related to the separate facets of alexithymia in female adolescents. Specifically, the findings concerning fear of separation may reflect the adolescent struggle for autonomy and the resulting effects on the affect regulation system. Our results also suggest that the normative differentiation of the emotional and cognitive aspects of alexithymia may occur on a developmental trajectory.     

The biasing effect of personality on self-estimates of cognitive abilities in males and females

In addition to exploring the relationship between psychometric and self-estimated measures of Crystallized Knowledge (Gc) and Visual Processing (Gv), this study investigated whether personality significantly moderated these relationships, thereby influencing the accuracy of the self-estimates. Adult participants (N = 165) completed the Big Five Inventory and self-estimated their levels of Gc and Gv. They were subsequently administered the Multidimensional Aptitude Battery II, a group test of cognitive ability. Significant and positive relationships between psychometric Gc and Gv and their respective self-estimates were found. Additionally, investigation of the moderating effects of personality for each gender separately using standard multiple regressions found that females high in Extraversion and males low in Conscientiousness were more prone to overestimating their Gv ability, while males high in Openness provided more accurate estimates of their Gv than those low in Openness. Elucidating the personality traits that distort self-perceptions of intellectual functioning has significant implications for the identification of individuals at risk of harboring inaccurate expectations, leading to the potential for interventions aimed at ameliorating associated deleterious consequences.     

Posttraumatic Stress in Women with Breast Cancer and Their Daughters

Using the PTSD Reaction Index, posttraumatic stress was assessed in 133 women with breast cancer and 64 of their daughters. Twenty-one percent of patients and 13% of daughters reported symptoms consistent with PTSD. PTSD in these patients without bone marrow transplants may be higher than reported in other samples, and the prevalence of PTSD symptoms in the daughters appear comparable to women with breast cancer. For patients, cancer stage at diagnosis was positively associated with posttraumatic stress severity. Mothers experiencing PTSD symptoms were significantly more likely to have daughters experiencing PTSD symptoms. Intergenerational patterns in reaction to breast cancer are discussed.