Shock preexposure and the reduced effectiveness of shock

In three experiments experience with shock was shown to reduce the effectiveness of shock as a reinforcer or motivator. In Experiment 1 rats were given signaled shock in a box separate from the runway where they were subsequently punished. These rats were less suppressed by shock punishment than rats that had no previous shock experience. In Experiment 2 preshocked rats were less suppressed by punishment and were slower to learn an escape-avoidance response than nonpreshocked rats, whether the preshock was signaled or unsignaled. In Experiment 3 as number of CS-shock pairings increased, fear of the CS decreased as did fear of the context. These results suggest that some central adaptation process produced by experience with shock reduces the effectiveness of shock as a reinforcer whenever shock is used repeatedly. This is independent of other effects, such as context blocking, that can affect responding after shock preexposure.     

Partial reinforcement and autoshaping of the pigeon's key-peck behavior

Pigeons were exposed to continuous and partial reinforcement (25%) schedules in an autoshaping procedure. The number of trials and/or pairings per session were equated across two factorial group sets and all groups were trained for a fixed total number of acquisition trials (192). When acquisition was analyzed as a function of reinforcements delivered, the groups receiving fewer number of trials per session acquired the response faster, independently of the percentage of reinforced trials. Moreover, the number of reinforcements to satisfy an acquisition criterion was a monotonic function of the number of trials per session but not of the schedule. The results are discussed in relation to the neocontinuity and the scalar expectancy theories.     

“Magic” revisited: Children's responses to apparent violations of conservation

Using a procedure adapted from E. Mermelstein and L. S. Shulman (1967, Child Development, 37, 39–52), kindergarten and third-grade children were exposed to one of two apparent violations of conservation or to a transformation in which conservation was preserved. In the violation conditions, water attained either the same or a higher level in a wider container than it had in a narrower container. The dependent measures were children's (a) predictions of the outcome of the transformation, (b) spontaneous reactions and verbal explanations of the actual outcome, and (c) responses to conventional conservation questions. The findings suggest that children very gradually progress from a stage at which they expect the water level to remain constant and base judgments of quantitative relations on water level alone to a stage at which they view reciprocal compensation and conservation as logically necessary. The findings indicate that, although some third-grade children may have attained the latter stage, many have not.     

Constructing other persons: A limit on the effect

Numerous studies have documented the effect that expectancies have on perceivers' perceptions of targets, but in few of these studies have the targets been aware of the perceivers' expectancies. In the present study, some perceivers were led to believe that their future interaction partners had a cold personality while others held no such expectancy. Orthogonal to this manipulation, some targets were told that their partners expected them to be cold while others received no such information. Results indicate that expectancy confirmation occurs only when perceivers with expectancies interact with naive targets. Targets who were told that the perceiver held an expectancy about them were able to overcome this expectancy. The relevance of these findings to the process of expectancy confirmation is discussed, and some predictions are made about the conditions under which expectancy confirmation will and will not occur.     

An Ecclesia and Missio Crucis: Douglas John Hall's Contribution to the Missional Church Conversation

Canadian theologian Douglas John Hall's contextual analysis of the church in North America has contributed significantly to the missional church conversation; however, his own constructive ecclesiology has received less attention. This article presents and critically examines Hall's proposal of a “suffering church” and offers constructive suggestions for further developing it: expanding solidarity into accompaniment; shifting from the category of representation to reconciliation as the paradigm for the church's mission; and finally, considering the theology of the cross in more pneumatological terms.     

Virtue or Art?: Political Friendship Reconsidered

In Talking to Strangers (2004), Danielle Allen argues that democratic citizens will need to acquire new habits for contending with distrust in order to prolong the democratic experiment. Though Allen's solution recalls her reading of the Republic, it is to Aristotle, not Plato, that she turns for help theorizing those habits. Drawing upon the Nicomachean Ethics, she proposes arts or techniques that might substitute for and outpace justice by enabling democratic strangers to treat one another like friends. While I endorse Allen's analysis of the problems posed by rising levels of distrust, I propose a different solution. First, I argue that the habits Allen describes would have to be virtues and not merely techniques in order to effect real political change. Then, second, I identify those habits as “piety” and “gratitude”—virtues which, I contend, are not so much substitutes for as supplements to justice. My argument thus elaborates Thomas Aquinas's account of justice and its “potential parts” in the Summa Theologiae.     

Individual strategy preferences and decisional fit

The present research introduces the concept of decisional fit. A decision maker experiences decisional fit when the individually preferred decision strategy fits the actually applied strategy. In accordance to other fit‐concepts in psychology (e.g., person–environment fit), we expected positive effects of decisional fit. Five studies examine the effects of a fit between the individual preference for intuition and deliberation (PID) and the actually used decision strategy (intuition or deliberation). A comparison of extreme types (according to participants' values on the PID scale) revealed that decisional fit enhances the perceived value of the chosen or evaluated object (Studies 1–3). In Studies 4 and 5, participants experienced less regret after decisional fit. The findings highlight the importance of considering individual differences when comparing intuitive and deliberate decision making, because strategy preferences interact with applied strategies. Copyright © 2008 John Wiley & Sons, Ltd.     

A Process Interpretation of Daoist Thought

Despite the fact that the Dao De Jing道德經 is one of the mos frequently translated texts in history,most of these translations share certain unexamined and problematic assumptions which often make it seem as though the text is irrational,incoherent,and full of non sequiturs.Frequently,these assumptions involve the imposition of historically anachronous,linguistically unsound,and philosophically problematic categories and attitudes onto the text.One of the main causes of the problem is the persistent tendency on the part of most translators to read the first line of the text as referring to or implying the existence of some kind of "eternal Dao." These are what I term "ontological "readings,as opposed to the "process" reading I will be articulating here.     

The watershed years of 1958-1962 in the Harvard Pigeon Lab

During the years 1958-1962, the final years of support by the National Science Foundation for B. F. Skinner's Pigeon Lab in Memorial Hall at Harvard University, 20 or so pigeon experiments (plus some with other organisms) ran concurrently 7 days a week. The research style emphasized experimental analyses, exploratory procedures, and the parametric exploration of variables. This reminiscence describes some features of the laboratory, the context within which it operated, and the activities of some of those who participated in it.