A causal model theory of the meaning of cause, enable, and prevent

The verbs cause , enable , and prevent express beliefs about the way the world works. We offer a theory of their meaning in terms of the structure of those beliefs expressed using qualitative properties of causal models, a graphical framework for representing causal structure. We propose that these verbs refer to a causal model relevant to a discourse and that "A causes B" expresses the belief that the causal model includes a link from A to B. "A enables/allows B" entails that the model includes a link from A to B, that A represents a category of events necessary for B, and that an alternative cause of B exists. "A prevents B" entails that the model includes a link from A to B and that A reduces the likelihood of B. This theory is able to account for the results of four experiments as well as a variety of existing data on human reasoning.     

Reducing Parent Distress and Increasing Parent Coping-Promoting Behavior During Children's Medical Procedure

The study investigated whether involving parents in their child's cognitive-behavioral intervention would effectively reduce parent distress during their child's medical procedure. Parents participating with their 3- to 7-year-old children prior to a voiding cystourethrogram were randomly assigned to an intervention (N = 20) or a standard care (N = 20) condition. The intervention included provision of information, coping skills training, and parent coaching. Parents participating in the intervention had a significant reduction in anxiety following the intervention relative to parents in standard care. Trained parents displayed fewer distress-promoting and more coping-promoting behaviors during the procedure, even though parents in both conditions reported similar levels of anxiety during the procedure. Involving parents in children's interventions is crucial to reduce parent distress and prepare parents to assist their child during the medical procedure.     

Psychological Distress in Caregivers of Liver and Lung Transplant Candidates

Although organ transplantation represents a stressful experience for the entire family, surprisingly little research has focused on the adjustment of caregivers. The purpose of this study was to examine what caregivers report to be the greatest benefits and stressors pretransplant, the prevalence of psychological distress and caregiver strain in pretransplant caregivers as compared to normative populations, and the physical, psychological, and demographic variables that predict distress. Fifty-two caregivers of transplant candidates (28 liver and 24 lung) completed a series of questionnaires, including the Psychosocial Adjustment to Illness Scale (PAIS-SR), SF-36 Health Survey, Caregiver Strain Index (CSI), and qualitative questions about benefits and stressors. The most commonly reported benefit of being a caregiver could be categorized as Helping the Patient, and the most common stressors were associated with Uncertainty/Waiting/Fears. Compared to normative samples of caregivers of patients with Alzheimer's disease, caregivers of liver transplant candidates reported more caregiver strain; there were no differences for lung transplant caregivers. Caregiver social functioning was found to be the only significant predictor of caregiver distress, with those caregivers who report greater distress also reporting extreme and frequent interference with normal social activities. Implications of these findings for psychological interventions are discussed.     

Speaking without seeing,or the effect of interviewer absence on interviewee disclosure time

The results of the present study confirmed earlier findings that the elimination of the usual face-to-face confrontation between interviewer and interviewee enhances disclosure time in relation to intimate questions. By unconfounding speaking time and pausing time, the present research demonstrated that the facilitating effect of an interviewer's absence is not simply an artifact of increased latencies and silent pauses within responses. The earlier findings were extended by manipulating the intimacy level of questions asked of subjects in the context of a gender-balanced design.     

Effects of mutual invisibility and topical intimacy on verbal fluency in dyadic communication

The mutual reduction of visual feedback, which in this study did not interfere with the synchronization of turns, reduced the productivity levels and increased the silent pauses of female speakers, even though it had no effect on their subjective discomfort, anxiety, and ease of communication self-ratings. The same reduction of visual feedback, which was achieved by seating the participants back-to-back rather than face-to-face, caused male speakers to feel anxious and uncomfortable and reduced the duration of their silent pauses, but only in samegender dyads. These findings are explained in terms of previously noted gender differences in the need for visual feedback and in the anxiety-arousing effects of back-to-back interactions. Intimate communications, on the part of both male and female speakers, were associated with a slow pacing of speech but not with a decrease in productivity level, independently of the seating arrangement. These findings are interpreted in terms of the self-monitoring and self-censoring that is usually associated with the communication of intimate messages.     

The role of patients' ability to pay, gender, and smoking history on public attitudes toward cardiac transplant allocation: an experimental investigation.

This study assessed public attitudes toward organ allocation through vignettes that were varied by patient's ability to pay (insured or uninsured), gender, and smoking history (current, former, or never). Participants were 681 adults contacted at a state driver's license office who read a vignette about a heart transplant candidate and subsequently rated their likelihood and priority of offering transplantation. Results revealed main effects for patient smoking history exclusively. Post hoc analyses for likelihood of offering transplantation revealed that participants gave higher ratings for never smokers than current smokers. For priority of transplantation, analyses revealed higher ratings for never smokers than for both former smokers and current smokers. Results suggest that public opinion about organ allocation may include the consideration of smoking history but not ability to pay or gender.     

RETRACTED ARTICLE: Unexpected events disrupt visuomotor working memory and increase guessing

When an unexpected event, such as a car horn honking, occurs in daily life, it often disrupts our train of thought. In the lab, this effect was recently modeled with a task in which verbal working memory (WM) was disrupted by unexpected auditory events (Wessel et al. in Nature Communications, 7, 11195, 2016). Here we tested whether this effect extends to a different type of WM—namely, visuomotor. We found that unexpected auditory events similarly decremented visuomotor WM. Moreover, this effect persisted for many more trials than had previously been shown for verbal WM, and the effect occurred for two different types of unexpected auditory events. Furthermore, we found that unexpected events decremented WM by decreasing the quantity, but not necessarily the quality, of items stored. These results showed an impact of unexpected events on visuomotor WM that was statistically robust and endured across time. They also showed that the effect was based on an increase in guessing, consistent with a neuroscience-inspired theory that unexpected events “wipe out” WM by stopping the ongoing maintenance of the trace. This new task paradigm is an excellent vehicle for further explorations of distractibility.