Manual discrimination and identification of length by the finger-span method

Experiments were conducted on length resolution for objects held between the thumb and fore-finger. The just noticeable difference in length measured in discrimination experiments is roughly 1 mm for reference lengths of 10 to 20 mm. It increases monotonically with reference length but violates Weber's law. Also, it decreases when the subject is permitted to maintain a constant finger span between trials; however, it tends to increase when the nondominant hand is used. As would be expected from studies of other stimulus dimensions in other sense modalities, resolution is considerably poorer in identification experiments than in discrimination experiments. For stimulus sets that cover a broad range (90 mm), the total information transfer is roughly 2 bits; for those that cover a relatively small range (18 mm), it is roughly 1 bit. The data are analyzed and interpreted using analysis techniques and models that have been used previously in studies of audition (e.g., Durlach & Braida, 1969).     

Effects of Spurned Help and Self-Esteem on Self-Protective Reactions of Primary School Teachers

This study examined (a) the extents to which primary school teachers experienced spurning of their help by peer teachers, (b) how spurned teachers reacted, and (c) how teachers’ self-esteem and importance attached to their teaching abilities influenced their reactions. Seven hundred eighty teachers in Guangzhou, China, responded to 3 waves of questionnaires assessing the variables under study. The results showed that the teachers experienced a moderate level of spurning, were seemingly threatened by the spurning, and reacted by disparaging the personal attributes of rejecting peers, with their self-esteem and importance attached to their teaching abilities exerting moderating effects.     

Diagnostic test evaluation of a nasal flow monitor for obstructive sleep apnea detection in sleep apnea research

In this diagnostic test evaluation of a nasal flow monitoring device for obstructive sleep apnea (OSA), 34 patients referred for polysomnography were studied at home for three consecutive nights with the monitor. The mean age of subjects (+/-SD) was 41.9+/-10.3 years, and their mean apnea-hypopnea index (AHI) was 31.5+/-27.2. The difference between the average AHI from three nights at home on the monitor and the polysomnogram (PSG) result was 1.8+/-17.1. The area under the receiver operating characteristic curve (AUC) for PSG AHI > or = 10 was .96. With a threshold AHI of 18 on the flow monitor, sensitivity was .92, specificity .86, positive predictive value .96, and negative predictive value .75. For detecting severe OSA (AHI > or = 30), the AUC was .85. With knowledge of appropriate thresholds and the pretest risk of OSA, the flow monitor can be used to detect or exclude OSA for sleep-related research, as well as to identify severe cases needing priority for further evaluation.     

The Role of Risk in Making Decisions under Escalation Situations

Cet article décrit deux recherches portant sur la relation entre l'intensification de l'implication et trois variables liées au risque: la propension au risque, la perception du risque et l'attente du résultat. L'analyse des données montra (a) que l'intensification de l'implication était en relation négative avec la perception du risque et en relation positive avec la propension au risque et l'attente du résultat; (b) que la perception du risque médiatisait partiellement les effets de la propension au risque et que l'attente du résultat médiatisait les effets de la perception du risque. Ces observations sont dans l'ensemble cohérentes avec schéma théorique proposé par Sitkin et Pablo (1992). On discute des conséquences de cette recherche pour le comportement de prise de risque, l'intensification de l'implication et la pratique.
This paper reports on two studies examining the relationship between escalation of commitment and three risk-related variables—risk propensity, risk perception, and outcome expectancy. Results showed that (a) risk propensity and outcome expectancy were positively related to escalation of commitment, whereas risk perception was negatively related to escalation of commitment; (b) risk perception partially mediated the effects of risk propensity, and outcome expectancy mediated the effects of risk perception. These findings are generally consistent with the conceptual framework proposed by Sitkin and Pablo (1992 ). Implications for risk-taking behavior, escalation of commitment, and practice are discussed.     

Dissemination and Implementation of Cognitive Behavioral Therapy for Depression in the Kaiser Permanente Health Care System: Evaluation of Initial Training and Clinical Outcomes

Notwithstanding its empirical status and strong recommendation in clinical practice guidelines, cognitive behavioral therapy (CBT) continues to be delivered infrequently and with low fidelity on the clinical front lines. Recently, organized efforts and policies within the public sector to disseminate and implement CBT and other evidence-based psychotherapies have yielded encouraging results and provided optimism for bridging the research-to-practice-gap. Following from these efforts, the current article examines the initial impact and experience of the implementation of an individualized approach to CBT training and treatment within the Kaiser Permanente health care system. Initial training outcomes, including changes in general and specific competencies, were assessed using divergent assessment methods within the initial cohort of therapists undergoing training. Initial patient outcomes, including changes in depression and anxiety, were assessed among patients receiving treatment from therapists in training. Results revealed training in and implementation of CBT-D was associated with overall large improvements in therapist competencies and in clinically significant improvements in both depression and anxiety among patients. Findings from the initial phase of dissemination and implementation within a large private system provide support for, and extend recent findings related to, the feasibility and effectiveness of training in and implementation of CBT-D in a real-world context.     

Antecedents and Consequences of Adult Play in Romantic Relationships

This study introduces and reports an initial test of a theoretical model of play in romantic relationships. It was hypothesized that self–esteem and humor orientation would be positively associated with playfulness in romantic relationships. Playfulness in romantic relationships was predicted to be positively associated with the experience of positive emotion. Positive emotion, in turn, was predicted to be associated with relationship satisfaction. A self–report instrument was administered to students and community members via snowball sampling. Path analysis revealed that the data were consistent with the proposed model.