Anxiety sensitivity: the role of conscious awareness and selective attentional bias to physical threat

Selective attentional biases were examined amongst individuals varying in levels of physical anxiety sensitivity. The dot-probe paradigm was used to examine attention towards anxiety symptomatology, social threat and positive words. Stimuli were presented above (unmasked) and below (masked) the level of conscious awareness. High physical anxiety sensitivity was associated with attentional vigilance for anxiety symptomatology words in both unmasked and masked conditions. For positive words, however, those high in anxiety sensitivity were found to avoid such stimuli when they were masked, whereas they exhibited a relative vigilance when unmasked. If the differences between awareness conditions are reliable, then the impact of the automatic vigilance for threat might be modified by conscious attempts to direct attention towards other types of stimuli.     

Whither causal models in the neuroscience of ADHD?

In this paper we examine the current status of the science of ADHD from a theoretical point of view. While the field has reached the point at which a number of causal models have been proposed, it remains some distance away from demonstrating the viability of such models empirically. We identify a number of existing barriers and make proposals as to the best way for these to be overcome in future studies. These include the need to work across multiple levels of analysis in multidisciplinary teams; the need to recognize the existence of, and then model, causal heterogeneity; the need to integrate environmental and social processes into models of genetic and neurobiological influence; and the need to model developmental processes in a dynamic fashion. Such a model of science, although difficult to achieve, has the potential to provide the sort of framework for programmatic model-based research required if the power and sophistication of new neuroscience technologies are to be effectively exploited.     

The sunk cost effect in pigeons and humans

The sunk cost effect is the increased tendency to persist in an endeavor once an investment of money, effort, or time has been made. To date, humans are the only animal in which this effect has been observed unambiguously. We developed a behavior-analytic model of the sunk cost effect to explore the potential for this behavior in pigeons as well as in humans. Each trial started out with a short expected ratio, but on some trials assumed a longer expected ratio part way through the trial. Subjects had the (usually preferable) option of "escaping" the trial if the longer expected ratio had come into effect in order to bring on a new trial that again had a short expected ratio. In Experiments 1 through 3, we manipulated two independent variables that we hypothesized would affect the pigeons' ability to discriminate the increase in the expected ratio within a trial: (a) the presence or absence of stimuli that signal an increase in the expected ratio, and (b) the severity of the increase in the expected ratio. We found that the pigeons were most likely to persist nonoptimally through the longer expected ratios when stimulus changes were absent and when the increase in the expected ratio was less severe. Experiment 4 employed a similar procedure with human subjects that manipulated only the severity of the increase in the expected ratio and found a result similar to that of the pigeon experiment. In Experiment 5, we tested the hypothesis that a particular history of reinforcement would induce pigeons to persist through the longer expected ratios; the results suggested instead that the history of reinforcement caused the pigeons to persist less compared to pigeons that did not have that history.     

Belief in luck and luckiness: Conceptual clarification and new measure validation

Research on the dimensionality and measurement of luck beliefs has yet to produce a clear conceptual and metrical consensus. This research theorizes a bidimensional model of luck beliefs that is tested through a series of studies (total n = 1205) validating the new Belief in Luck and Luckiness Scale. Unlike existing conceptualizations and measures, this new model is applicable to both believers and non-believers in luck, and reveals belief in luck and personal luckiness to be discrete, uncorrelated, and respectively unidimensional constructs.     

Help-Seeking from Clergy and Spiritual Counselors Among Veterans with Depression and PTSD in Primary Care

Little is known about the prevalence or predictors of seeking help for depression and PTSD from spiritual counselors and clergy. We describe openness to and actual help-seeking from spiritual counselors among primary care patients with depression. We screened consecutive VA primary care patients for depression; 761 Veterans with probable major depression participated in telephone surveys (at baseline, 7 months, and 18 months). Participants were asked about (1) openness to seeking help for emotional problems from spiritual counselors/clergy and (2) actual contact with spiritual counselors/clergy in the past 6 months. At baseline, almost half of the participants, 359 (47.2 %), endorsed being “very” or “somewhat likely” to seek help for emotional problems from spiritual counselors; 498 (65.4 %) were open to a primary care provider, 486 (63.9 %) to a psychiatrist, and 409 (66.5 %) to another type of mental health provider. Ninety-one participants (12 %) reported actual spiritual counselor/clergy consultation. Ninety-five (10.3 %) participants reported that their VA providers had recently asked them about spiritual support; the majority of these found this discussion helpful. Participants with current PTSD symptoms, and those with a mental health visit in the past 6 months, were more likely to report openness to and actual help-seeking from clergy. Veterans with depression and PTSD are amenable to receiving help from spiritual counselors/clergy and other providers. Integration of spiritual counselors/clergy into care teams may be helpful to Veterans with PTSD. Training of such providers to address PTSD specifically may also be desirable.     

The role of all things considered judgements in practical deliberation

Suppose an agent has made a judgement of the form, ‘all things considered, it would be better for me to do a rather than b (or any range of alternatives to doing a)’ where a and b stand for particular actions. If she does not act upon her judgement in these circumstances would that be a failure of rationality on her part? In this paper I consider two different interpretations of all things considered judgements which give different answers to this question, one suggested by Donald Davidson, the other by Paul Grice and Judith Baker. I argue that neither interpretation is adequate. However, a third interpretation that combines features of the Grice/Baker view with the Davidsonian view is possible. In the final section of the paper I defend this interpretation against two objections.     

The Determination of Normal Extravert-Introvert Interest Differences

The authors conducted a survey of 1,758 elementary school children (6-14 years old) from December 2001, to March 2002, in 3 Chinese cities with different levels of television advertising. The authors used D. R. John's (1999) model of consumer socialization as the theoretical framework for their study. More than half of the children whom the authors interviewed were able to understand that television stations broadcast commercials to earn money. Their understanding of the purposes of television commercials and the persuasive intention of television commercials developed with age. The authors examined the influence of gender, level of advertising, and level of television viewing on children's understanding of television advertising by using 3-way factorial models.     

A Device for Studies in Weight Discrimination

Within-Ss 2×3 factorial design, with two methods—recall (REC) and anticipation (ANT)—and three levels of list difficulty, was used for testing the hypothesis that ANT is superior to REC only if the learning task is comparatively difficult. Each of 20 male university students learned, both by the methods of REC and ANT, pairs of 10 words and digits (WD), eight CVCs of moderate and six CCCs of low association values. Analysis of variance, except for the main effect of method, yielded high significance for all the main effects and interactions. In learning paired-associate lists for comparatively easier tasks (WD and CVC lists), no significant difference was found between the two methods. For CCC pairs, however, a significant difference was found (t = 2.50, p < .02), which supported the hypothesis. A tentative modification was suggested in W. K. Estes's theory of reinforcement in human learning.     

Helping patients by involving their families

Patients and their family members may become highly interdependent as patients near the end of life. To best help these patients, healthcare providers can try to become a member of the patient/family team. By becoming a member, careproviders can improve patients' and family members' access to medical information, more effectively offer advice, and assure patients and family members that they can still choose to do what they think is best.