Trainees' experiences with peers having competence problems: A national survey.

Trainees with problems of professional competence (TPPC) are a significant phenomenon in psychology education and training. Although most faculty and students are able to identify at least one TPPC over a 5-year period (Forrest, Elman, Gizara, & Vacha-Haase, 1999), investigations have typically focused on trainers; trainees' perspectives are relatively unexplored. We used survey research to assess perspectives on TPPC from 321 trainees in counseling, clinical, school, and combined psychology programs from masters' through predoctoral internship training levels. Questions targeted (a) training on TPPC and awareness of program policies, (b) general beliefs about faculty/supervisor/peer awareness and action related to TPPC, (c) specific experience with TPPC, (d) characteristics of the experience with a TPPC, (e) impact of program dynamics, (f) faculty/supervisor/peer actions with specific TPPC instances, (g) making a decision to take action, (h) personal and systemic impact of taking action, and (i) not taking action. Results revealed that 44% of students were aware of a TPPC. Participants were confident that trainers were aware of TPPC, yet less certain that trainers would address TPPC. Similarly, participants held more confidence that their peers were aware of TPPC than they were that peers would take action. Although more than half of participants reported taking action, a majority did not draw on their training when doing so. Common action strategies included consulting with faculty/supervisors and peers, venting with peers, or approaching the TPPC. Implications for training are discussed, including attention to training related to TPPC and understanding faculty and student roles. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Phonological Blocking During Picture Naming in Dementia of the Alzheimer Type.

Individuals with dementia of the Alzheimer type (DAT; n = 53, ages 55-91), healthy older adults (n = 75, ages 59-91), and younger adults (n = 24, ages 18-24) performed a word-primed picturenaming task. Word primes were neutral (ready), semantically or phonologically related, or unrelated to the correct picture name. AH groups produced equivalent unrelated-word interference and semantic priming effects in response latencies. However, analysis of errors revealed a DAT-related increase of phonological blocking. The results suggest that picture-naming errors in DAT are due, at least in part, to a breakdown in access to phonological representations of object names as a consequence of reduced inhibitory control over other highly active alternatives. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Understanding multivinyl monomer photopolymerization kinetics through modeling and GPC investigation of degradable networks

Multivinyl monomers that react to form highly crosslinked, biodegradable networks are being developed as scaffolds for tissue engineering and vehicles for drug delivery; however, this work demonstrates their usefulness in characterizing better the complexities of the kinetics and structural evolution during crosslinking photopolymerization. The molecular weight distributions (MWDs) of the degradation products of networks formed through the free radical photopolymerization of multivinyl monomers validate a novel kinetic model to test hypotheses as to the important kinetic mechanisms during crosslinking. The kinetic model, in conjunction with the experimental results for the degradable network, provides insight into the fundamental termination mechanisms (i.e. chain length dependent termination (CLDT), chain transfer to either a unimolecular species or polymer, and the accumulation of persistent radicals) that control the MWD of the backbone kinetic chains throughout the polymerization. Specifically, the importance of CLDT during autoacceleration and the impact of light intensity on the MWD of the backbone kinetic chains are presented.     

Social cognitive theory and cancer patients' quality of life: A meta-analysis of psychosocial intervention components.

Social cognitive theory (SCT) provides a theoretical framework to evaluate improved quality-of-life (QOL) outcomes through interventions with cancer patients. To assess whether inclusion of SCT components predicted better outcomes, focused comparisons were used to integrate results from 38 randomized studies. Interventions with more SCT components had significantly larger effect sizes than studies with fewer or no SCT components for the overall analysis (Z = 3.72, p     

A bump on a bump? Emerging intuitions concerning the relative difficulty of the sciences.

In 4 studies, the authors examined how intuitions about the relative difficulties of the sciences develop. In Study 1, familiar everyday phenomena in physics, chemistry, biology, psychology, and economics were pretested in adults, so as to be equally difficult to explain. When participants in kindergarten, Grades 2, 4, 6, and 8, and college were asked to rate the difficulty of understanding these phenomena, children revealed a strong bias to see natural science phenomena as more difficult than those in psychology. The perceived relative difficulty of economics dropped dramatically in late childhood. In Study 2, children saw neuroscience phenomena as much more difficult than cognitive psychology phenomena, which were seen as more difficult than social psychology phenomena, even though all phenomena were again equated for difficulty in adults. In Study 3, we explored the basis for these results in intuitions about common knowledge and firsthand experience. Study 4 showed that the intuitions about the differences between the disciplines were based on intuitions about difficulty of understanding and not on the basis of more general intuitions about the feasibility or truth of the phenomena in question. Taken together, in the studies, the authors find an early emerging basis for judgments that some sciences are intrinsically more difficult than others, a bias that may persevere in adults in subtler forms in such settings as the courtroom. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Distributed reactive collision avoidance

The work contained in this paper concerns a novel approach to the n-vehicle collision avoidance problem. The vehicle model used here allows for three-dimensional movement and represents a wide range of vehicles. The algorithm works in conjunction with any desired controller to guarantee all vehicles remain free of collisions while attempting to follow their desired control. This algorithm is reactive and distributed, making it well suited for real time applications, and explicitly accounts for actuation limits. A robustness analysis is presented which provides a means to account for delays and unmodeled dynamics. Robustness to an adversarial vehicle is also presented. Results are demonstrated in simulation.     

Inhibition in the processing of garden-path sentences.

The Hartman and Hasher (1991) garden-path sentence completion task has been used in several studies to assess the efficiency of the deletion function of inhibition (e.g., L. Hasher, R. Zacks, & C. P. May, 1999), with results suggesting that younger adults are efficient at suppressing once relevant but no longer appropriate information, whereas older adults generally are not (e.g., M. Hartman & L. Hasher, 1991; L. Hasher, M. B. Quig, & C. P. May, 1997; C. P. May & L. Hasher, 1998). An alternative interpretation of patterns of access to relevant and no-longer-relevant sentence endings focuses on the difficulty of selecting final words for sentence frames and on integration effects in implicit memory (M. Hartman, 1995). This alternative is considered and found wanting on the basis of both new and old empirical data. On the basis of present data and related findings, it is concluded that the task does measure inhibitory efficiency. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Sensitivity to varying gains and losses: The role of self- discrepancies and event framing.

Three studies psychophysically measured people's discrimination among different sizes of monetary net gains or net losses. Participants imagined either gains or nonlosses (i.e., net gains) or losses or nongains (i.e., net losses). Participants discriminated more when the identical event was framed as the presence (gains and losses) versus the absence (nonlosses and nongains) of an outcome, presumably because the latter is harder to represent. Discrimination was enhanced when the motivational features of the imagined event were either both the same as or both different from a person's self-discrepancy. Discrimination was reduced when only one of the motivational features was different. A model of excitations, inhibitions, and disinhibitions between mental representation is suggested to account for these findings. (PsycINFO Database Record (c) 2010 APA, all rights reserved)