Positive explorers: modeling dynamic control in normal aging

Situations in which there are multiple changes occurring all at once and which demand complex decisions to be made are common throughout life, but little is known about how normal aging influences performance on these types of scenarios. To determine performance differences associated with normal aging, we test older and younger adults in a dynamic control task. The task involves the control of a single output variable over time via multiple and uncertain input controls. The Single Limited Input, Dynamic Exploratory Responses (SLIDER) computational model, is implemented to determine the behavioral characteristics associated with normal aging in a dynamic control task. Model-based analysis demonstrates a unique performance signature profile associated with normal aging. Specifically, older adults exhibit a positivity effect in which they are more influenced by positively valenced feedback, congruent with previous research, as well as enhanced exploratory behavior.     

Category label and response location shifts in category learning

The category shift literature suggests that rule-based classification, an important form of explicit learning, is mediated by two separate learned associations: a stimulus-to-label association that associates stimuli and category labels, and a label-to-response association that associates category labels and responses. Three experiments investigate whether information–integration classification, an important form of implicit learning, is also mediated by two separate learned associations. Participants were trained on a rule-based or an information–integration categorization task and then the association between stimulus and category label, or between category label and response location was altered. For rule-based categories, and in line with previous research, breaking the association between stimulus and category label caused more interference than breaking the association between category label and response location. However, no differences in recovery rate emerged. For information–integration categories, breaking the association between stimulus and category label caused more interference and led to greater recovery than breaking the association between category label and response location. These results provide evidence that information–integration category learning is mediated by separate stimulus-to-label and label-to-response associations. Implications for the neurobiological basis of these two learned associations are discussed.     

Therapists' Use of DBT: A Survey Study of Clinical Practice

The purpose of this study was to examine how therapists conduct Dialectical Behavior Therapy (DBT) individual psychotherapy with clients, focusing on clinical factors that could account for decisions regarding modifications of DBT (e.g., client diagnosis, therapist theoretical orientation, and intensity of DBT training). Additionally, the study investigated how therapists integrate DBT into their primary approach to therapy. Greater adherence to the DBT protocol was reported by therapists who described using DBT with a client with a diagnosis of borderline personality disorder. More frequent use of DBT components (i.e., group skills training, consultation teams, and telephone consultation) was reported by therapists who viewed their therapy as being guided by an applied behavior analysis/radical behavioral theoretical orientation and by therapists who had received intensive DBT training. Most therapists reported using DBT skills in their non-DBT work, with non-cognitive-behavioral therapists more likely to introduce mindfulness skills.     

Living the Paradox: Female Athletes Negotiate Femininity and Muscularity

Sportswomen live in 2 cultures: the sport culture that is inherently masculine and the larger social culture where femininity is celebrated for women. In this investigation, which was grounded in feminist cultural studies, we pursued the research question: how do female athletes negotiate and reconcile the social expectations surrounding femininity with athleticism? Twenty-one female college athletes participated in focus group interviews about body image and perceptions of muscularity and femininity. Data analysis resulted in 3 higher order themes: the influence of hegemonic femininity, athlete as other, and physicality. These athletes expressed that being feminine contrasted with being athletic. They further conveyed that as athletes, they were marginalized and perceived as different from “normal” women. Yet, they also were proud of their strong, developed bodies and expressed feelings of empowerment that generalized beyond the sport context.     

Characteristics of changes of personal odor after experimental bone marrow transplantation]

In an operant conditioning paradigm 4 Balb/c inbred strain mice were conditioned to discriminate between urine samples of two other inbred strains. The purpose was to examine whether or not the known stimulus configuration during training had any effect upon the rate of recognition of other stimuli. On the basis of this procedure, we subsequently investigated the extent to which an allogeneic bone marrow transplantation interferes with the olfactory identity of an individual. For the transplants a strain was inbred which had no contact to the animals tested, a procedure used for the first time here. Furthermore, also for the first time, it was possible to demonstrate in a direct comparison, the role played by donor versus recipient characteristics on the olfactory composition of the recipients odor.     

Helplessness,stress level,and the coronary-prone behavior pattern

Two experiments were conducted to examine the relationship between stress level and learned helplessness in human subjects. Experiment I subjected subjects to loud or moderate noise in order to induce differential stress. Half of the subjects within each stress group were unable to escape from a series of noise bursts, whereas the other half could terminate each burst by manipulating appropriate switches. After the pretreatment series, the same noise was again delivered to subjects, all of whom could now escape or avoid noise by making an appropriate response on a shuttle box. Inescapable (helplessness) pretreatment interfered with escape learning in the second (test) phase of the study under both levels of stress. Experiment II was a partial replication of the first study using only loud noise. The interference effect during test trials was greater than in the first study. In addition to these findings, measures of a coronary-prone behavior pattern were related to differential susceptibility to the interference effect under both high stress and moderate stress conditions. These results were interpreted in terms of differing perceptions of threat imposed by lack of environmental control.     

The self-consciousness scale: a discriminant validity study

A recent Self-Consciousness Scale (SCS) measures Private and Public Self-Consciousness and Social Anxiety. The present research was intended to establish discriminant validity for the two Self-consciousness components with respect to several other variables. 105 male undergraduates completed the SCS, the Otis Test of Mental Ability, an abbreviated Edwards Personal Preference Schedule (measuring need for achievement), a Test Anxiety Questionnaire, and the EASI Temperament Survey. Private Self-consciousness did not correlate significantly with any other measure. Public Self-consciousness correlated weakly with the temperaments of Sociability and Emotionality. The Self-consciousness components of the SCS thus appear to be relatively independent of the other measures tested.     

The coronary-prone behavior pattern and the suppression of fatigue on a treadmill test.

A study was conducted to test the hypothesis that Type A (coronary-prone) individuals would show greater suppression of subjective fatigue than Type B (non-coronary-prone) individuals in order to persist at a tiring but challenging task. Type A and Type B college students completed a Balke treadmill test (at a walking pace) while rating their fatigue at 2-minute intervals. Each subject also completed another treadmill test (at a running pace) that was designed to assess maximum aerobic capacity. Subjects' aerobic capacities and their aerobic performance levels attained on the Balke test were determined by analysis of expired air. Each subject's walking performance was scored as a proportion of his maximum aerobic capacity. Analysis of the resulting percentage values indicated greater effort among A's than B's. Moreover, the subjective fatigue ratings of A's were lower than those of B's. The results were discussed in terms of fatigue suppression as an instrumental response for attaining mastery over the environment. consideration was also given to the role of fatigue in the onset of coronary heart disease.     

Hyperactive children and peer interaction: Knowledge and performance of social skills

This study investigated hyperactive children's peer relations using the framework of social skills theory. Subjects' (15 hyperactive and 15 control boys aged 7 through 11) knowledge of socially appropriate behavior was assessed using the Social Knowledge Interview (Geraci & Asher, 1980). Additionally, performance of social skills with peers was rated by independent judges during free play, a cooperative puzzle task, and a persuasion task. Peers also rated subjects'desirability as partners for work, play, and friendship. Analyses showed that hyperactive subjects had deficits in knowledge of how to maintain relationships and handle interpersonal conflict, and demonstrated more negative behavior in the cooperative puzzle task than did controls. Hyperactive subjects also were rated by judges as less likely to achieve academic success than controls and were rated by peers as less desirable potential work partners in school. Significant correlations between social knowledge and performance with peers were found. It was concluded that hyperactive boys exhibit deficits both in their social knowledge and in their performance of socially skilled behavior.This research was conducted as part of doctoral research by the first author, under the supervision of the second and third authors. We are grateful for the assistance of Diane Arnkoff, who served on the committee, for her helpful comments and suggestions. Thanks also go to Al Farrell for his statistical consultation. We gratefully acknowledge the support and assistance of the Georgetown University Child Development Center, where the data were collected.