生命意义的内涵、测量及功能

研究者通常用目的和含义来定义生命意义,或者把它定义为多维度的结构。认知、动机和情感是被提及最多的生命意义的组成维度。动机和认知维度得到了较多研究者的认可,而情感维度存在较大争议。生命意义是幸福不可或缺的元素,它能够影响许多与幸福有关的变量。目前的研究对生命意义的动机维度(生命意义寻求)及如何获得和提高生命意义研究较少,今后的研究可针对这两方面开展。     

Human and Animal Subjects of Research: The Moral Significance of Respect versus Welfare

Human beings with diminished decision-making capacities are usually thought to require greater protections from the potential harms of research than fully autonomous persons. Animal subjects of research receive lesser protections than any human beings regardless of decision-making capacity. Paradoxically, however, it is precisely animals’ lack of some characteristic human capacities that is commonly invoked to justify using them for human purposes. In other words, for humans lesser capacities correspond to greater protections but for animals the opposite is true. Without explicit justification, it is not clear why or whether this should be the case. Ethics regulations guiding human subject research include principles such as respect for persons—and related duties—that are required as a matter of justice while regulations guiding animal subject research attend only to highly circumscribed considerations of welfare. Further, the regulations guiding research on animals discount any consideration of animal welfare relative to comparable human welfare. This paper explores two of the most promising justifications for these differences␣between the two sets of regulations. The first potential justification points to lesser moral status for animals on the basis of their lesser capacities. The second potential justification relies on a claim about the permissibility of moral partiality as␣found in common morality. While neither potential justification is sufficient to justify the regulatory difference as it stands, there is possible common ground between supporters of some regulatory difference and those rejecting the current difference.     

Execution architectures for program algebra

We investigate the notion of an execution architecture in the setting of the program algebra PGA, and distinguish two sorts of these: analytic architectures, designed for the purpose of explanation and provided with a process-algebraic, compositional semantics, and synthetic architectures, focusing on how a program may be a physical part of an execution architecture. Then we discuss in detail the Turing machine, a well-known example of an analytic architecture. The logical core of the halting problem—the inability to forecast termination behavior of programs—leads us to a few approaches and examples on related issues: forecasters and rational agents. In particular, we consider architectures suitable to run a Newcomb Paradox system and the Prisoner's Dilemma.     

Procedural and interpersonal fairness moderate the relationship between outcome fairness and acceptance of merit pay

An organizational field study (N = 257) investigated employees' acceptance of a new merit pay system as involving an assessment of whether merit pay can make their earnings more fair, compared to their earnings in the current, seniority-based pay system. We expected that improvement of unfair earnings, and consequently acceptance of merit pay, is considered likely when existing procedures that produce these earnings are unfair, because merit pay improves such procedures. We also expected improvement of unfair earnings, and increased merit pay acceptance, to be likely when employees anticipate fair performance evaluation in a new system, as indicated by fair interpersonal treatment by their supervisor. Results showed that procedural and interpersonal fairness in the existing pay system indeed moderated the relationship between fairness of current outcomes and merit pay acceptance as predicted. Implications for the introduction of merit pay in organizations and for our understanding of the different roles of procedural and interpersonal fairness in outcome evaluations are discussed.     

A comparison of two online cognitive‐behavioural interventions for symptoms of depression in a student population: The role of therapist responsiveness

Objectives: The study aimed to compare the efficacy of eight weekly sessions of a self‐administered online CBT treatment (cCBT; n=51) to a therapist‐assisted email CBT treatment (eCBT; n=50) in University students. Design: The design was a randomised parallel group trial. The study randomised participants with symptoms of depression to one of two available treatments. Method: Participants were offered eight weekly sessions of either cCBT or eCBT. Participants completed the Beck Depression Inventory‐II (BDI‐II) and the Clinical Outcomes in Routine Evaluation – Outcome Measure (CORE‐OM) at pre‐and post‐treatment, at weeks 16 and 32 follow‐up. The Working Alliance Inventory‐Short Form (WAI‐SR) was completed at weeks 2, 4, and 6. Results: For both groups, pre‐post within group effect sizes reported were large for the BDI‐II and the CORE‐OM and these were maintained at follow‐up. Perceptions of working alliance were similar in each group, but Bond was significantly stronger for the eCBT condition. WAI scores correlated more positively with the outcome on BDI‐II for those in the eCBT condition than the cCBT condition, but not significantly. Conclusion: There were no significant differences between the two online treatments, both reduced depressive symptoms and improved general functioning. Similarly, at post‐treatment and follow‐up, clinical improvement and recovery was demonstrated for both groups equally. The study demonstrates the possibility for cCBT in a university setting that may contribute to addressing the shortcomings in meeting increasing demands that mental health services presently face.     

Differentiation Between School Attendance Problems: Why and How?

School attendance problems (SAPs) are heterogeneous with respect to etiology and presentation. The long history of conceptualizing SAPs has led to a vast array of terms and definitions as well as different perspectives on the most helpful approach to classification. For educators, practitioners, researchers, and policymakers, this presents a challenge in understanding, assessing, and intervening with SAPs. This paper outlines evolution in the conceptualization of SAPs, focusing on two contemporary approaches to differentiating between them. One approach draws on the longstanding differentiation between SAP types labeled school refusal, truancy, and school withdrawal. A fourth type of SAP, labeled school exclusion, is also considered. The other approach focuses on the function of absenteeism, measured via the School Refusal Assessment Scale (SRAS). Anecdotal and scientific support for the SAP typology is presented, along with the benefits and shortcomings of the SRAS approach to differentiation. The paper offers suggestions for how to differentiate between SAPs and introduces the SNACK, a brief screening measure that permits differentiation by SAP type.     

Effect of shifts in body weight on rats' straight alley performance as a function of reward magnitude

The performance of rats trained in a straight alley for 55 trials under 75% body weight and then shifted to 90% body weight was compared to that of rats trained only under 90% body weight. When training was with a small reward the speed of the shifted group decreased to the level of the 90% small reward control groups, but when training was with a large reward the speed of the shifted group dropped below the level of the 90% large reward control group. Thus, the effects on performance of shifting deprivation level following extended training depend on the reward magnitude employed.     

Slow brain potentials in the CNV-paradigm

Slow brain potentials were recorded during the foreperiod of a reaction time task, and the effects of instructions governing the trade-off between speed and accuracy were investigated. One brain potential, a slow negative shift preceding S₂, was largely attenuated under accuracy instructions. It is suggested that this shift is dependent on a motor response and that its amplitude reflects the level of motor preparation. Two other brain potentials, a slow positive and a slow negative wave, seem to depend on the psychological properties of S₁. Enhanced amplitudes were found, when S₁ provides information, besides its warning function.     

Effects of sentential stress and word class upon comprehension in Broca's aphasics

The roles which word class (open/closed) and sentential stress play in the sentence comprehension processes of both agrammatic (Broca's) aphasics and normal listeners were examined with a word monitoring task. Overall, normal listeners responded more quickly to stressed than to unstressed items, but showed no effect of word class. Aphasics also responded more quickly to stressed than to unstressed materials, but, unlike the normals, responded faster to open than to closed class words regardless of their stress. The results are interpreted as support for the theory that Broca's aphasics lack the functional underlying open/closed class word distinction used in word recognition by normal listeners.     

Reinforcement and punishment in a closed system

Children chose between toys freely and with various restrictive contingencies. Sometimes play with a preferred toy was contingent on play with a nonpreferred toy. Sometimes play with a nonpreferred toy was contingent on play with a preferred toy. Another toy (free toy) was always available during contingency sessions. Because toy playing occupied the entire session the response system was closed. When one response increased in duration others had to decrease. An analysis of closed-system responding revealed that the restrictions of the closed system together with the restrictions imposed by the contingencies forced subjects to alter the proportion of time devoted to the three responses. A geometrical model representing the closed system and an analytical method based on distance are presented to describe the data.