De novo conditioning in trauma-exposed individuals with and without posttraumatic stress disorder

Differential conditioning was assessed in 15 medication-free individuals meeting Diagnostic and Statistical Manual of Mental Disorders (4th ed.; American Psychiatric Association, 1994) criteria for chronic posttraumatic stress disorder (PTSD) and 18 trauma-exposed individuals who never developed PTSD (non-PTSD). Conditioned stimuli (CSs) were colored circles, and the unconditioned stimulus was a "highly annoying" electrical stimulus. Individuals with PTSD had higher resting heart rate (HR) and skin conductance (SC) levels and produced larger SC orienting responses. During conditioning, the PTSD group showed larger differential SC, HR, and electromyogram responses to the reinforced vs. nonreinforced stimuli (CS+ vs. CS-) compared with the non-PTSD group. Only PTSD participants continued to show differential SC responses to CS+ vs. CS- during extinction trials. Results suggest that individuals with PTSD have higher sympathetic nervous system arousal at the time of conditioning and are more conditionable than trauma-exposed individuals without PTSD.     

PTSD arousal and depression symptoms associated with increased right-sided parietal EEG asymmetry

Researchers have proposed that depression and particular types of anxiety are associated with unique patterns of regional brain activation. The authors examined the relationship among posttraumatic stress disorder (PTSD), anxiety, and depressive symptoms and frontal, temporal, and parietal EEG alpha asymmetry in female Vietnam War nurse veterans. The results indicate that PTSD arousal symptoms are associated with increased right-sided parietal activation. However, the combination of arousal, depression, and their interaction explain more than twice the variance in parietal asymmetry compared with arousal alone. The results support the contention that the association between anxiety and right-sided posterior activation is specific to the anxious arousal subtype. These findings underscore the importance of isolating, both theoretically and statistically, emotional subcomponents in studies of regional brain activation.     

In the absence of rose-colored glasses: Ratings of self-attributes and their differential certainty and importance across multiple dimensions in social phobia

Sixty-seven individuals with social phobia (social anxiety disorder) and 60 healthy controls rated their perceived standing relative to others on 13 self-attribute dimensions, their level of certainty concerning those standings, and the importance of each dimension. As expected, individuals with social phobia provided self-ratings that were significantly more negative than controls across all dimensions. In addition, positive self-views were equated with higher levels of certainty and importance for controls, but not for individuals with social phobia. Thus, whereas reports of control participants reflected a healthy, positive framing of self-views, the ratings of clinical participants demonstrated an orientation toward self-framing that was neither positive nor negative. Together, these novel findings shed light on the nature of self-appraisals in social anxiety. Implications of these results are discussed in terms of contemporary cognitive-behavioral models of social phobia.     

Judging the quality of qualitative inquiry: Criteriology and relativism in action

Statement of problemA variety of conceptions of qualitative research exist. This leads to a situation in which there are competing claims as to what counts as good-quality work. These competing claims revolve around the issue of criteria and how they are used to pass judgment on qualitative research. Those involved in sport and exercise sciences need to reflect on this issue with a view to generating further dialogue and a greater understanding of difference within the research community.MethodTwo ideal types of researcher, one a criteriologist the other a relativist, are constructed to illustrate how each might judge qualitative studies of different kinds.ResultsA comparison of the ways in which the criteriologist and the relativist draw on different assumptions to judge qualitative studies illustrates the constraining nature of the former and the expansive possibilities of the latter.ConclusionsCriteria should be viewed as lists of characterizing traits that are open to reinterpretation as times, conditions, and purposes change. Researchers need to adopt the role of connoisseur in order to pass judgment on different kinds of study in a fair and ethical manner.     

A goal programming model for crew duties generation

An Erratum has been published for this article in Journal of Multi‐Criteria Decision Analysis 10(5) 2001, 285. This paper proposes a model for the generation of daily work duties of airside crew (being bus drivers) at the Hong Kong International Airport. The results can be adopted as a good crew schedule, in the sense that it is both feasible, satisfying requirements of various work conditions, and ‘optimal’ in minimizing overtime shifts. It is formulated as a goal programme, specifically designed to cater for the manpower planning issues to handle frequent changes of flight schedules by flexibility in work patterns of driver duties. Illustrative results from an actual case study are given. Copyright © 2001 John Wiley & Sons, Ltd.     

Maximization and Search for Alternatives in Decision Situations With and Without Loss of Options

Maximizing tendency has been associated with greater accumulation of choice alternatives prior to selection of a preference. It is not known whether this search behavior extends to situations in which accumulation of new choice alternatives comes with the potential loss of existing ones. In Study 1, we replicate the original finding of greater accumulation of choice alternatives, using a computer‐based laboratory task. We then provide evidence, in Studies 2 and 3, that when potential loss of existing options is incorporated into the task, maximization is associated with less rather than more search for additional options. Maximization components of decision difficulty and alternative search, but not high standards or satisficing, explain this behavior. Other task measures are also collected, but few maximization‐related differences are observed. The findings support an interpretation of maximizers as decision makers who are as concerned with the potential loss of existing options as with the loss of undiscovered future ones. Copyright © 2015 John Wiley & Sons, Ltd.