Adult attachment and preemptive defenses: converging evidence on the role of defensive exclusion at the level of encoding

The objective of this research was to determine whether the tendency of highly avoidant adults not to recall attachment-related information is best explained through defensive strategies that operate on encoding or retrieval processes. In Study 1 participants listened to an emotionally evocative recording and were given both explicit and implicit tests of their memory for the material. Compared to less avoidant people, highly avoidant people recalled fewer details from the recording and performed worse on an implicit test of their memory for the information. In Study 2 we manipulated people's motivation to retrieve information from memory by offering participants a monetary award for recall. Highly avoidant people recalled less information than less-avoidant people despite the monetary incentive. Taken together, these results suggest that the relative inability of avoidant adults to recall attachment-related information is due to the defensive exclusion of information at the time of encoding rather than the time of retrieval.     

Bad company generalized

The paper is concerned with the bad company problem as an instance of a more general difficulty in the philosophy of mathematics. The paper focuses on the prospects of stability as a necessary condition on acceptability. However, the conclusion of the paper is largely negative. As a solution to the bad company problem, stability would undermine the prospects of a neo-Fregean foundation for set theory, and, as a solution to the more general difficulty, it would impose an unreasonable constraint on mathematical practice.     

Performance-approach and performance-avoidance goals: when uncertainty makes a difference

Performance-avoidance goals (the desire to avoid performing more poorly than others do) have been shown to have consistently deleterious effects on performance but the effects of performance-approach goals (trying to outperform others) are more complex. Two studies examine uncertainty as a moderator of the effect of performance-approach goals on performance. Experiment 1 shows that manipulated performance-approach goals lead to better performance than do performance-avoidance goals in the absence of uncertainty about performance but when participants learn that a coactor disagreed with them about problem solutions, creating uncertainty, performance-approach goals do not differ from performance-avoidance goals in their effect on performance. Experiment 2 shows that uncertainty also moderates the effects of self-set performance-approach goals. Moreover, the same dynamic occurs with another kind of uncertainty: negative competence feedback.     

Signalling In Languages With Imperfect Information

This paper is a short survey of different languageswith imperfect information introduced in (Hintikka and Sandu 1989).The imperfect information concerns both quantifiers and connectives.At the end, I will sketch a connection between these languages and linearlogic.     

Splitting as a predictor of depression.

146 university students completed measures of splitting, depression, and self-esteem. Splitting was positively correlated with depression and negatively related to self-esteem.     

Joint action and group action made precise

The paper argues that there are two main kinds of joint action, direct joint bringing about (or performing) something (expressed in terms of a DO-operator) and jointly seeing to it that something is the case (expressed in terms of a Stit-operator). The former kind of joint action contains conjunctive, disjunctive and sequential action and its central subkinds. While joint seeing to it that something is the case is argued to be necessarily intentional, direct joint performance can also be nonintentional. Actions performed by social groups are analyzed in terms of the notions of joint action (basically DO and Stit).A precise semantical analysis of the aforementioned kinds of joint action is given in terms of time-trees. With each participant a tree is connected, and the trees are joined defining joint possible worlds in terms of state-expressing nodes from the trees. Sentences containing DO and Stit are semantically evaluated with respect to such joint possible worlds. Intentional joint actions are characterized in terms of the notion of we-intention (joint intention), characterized formally by means of a special operator.     

Social interaction and the development of cognitive operations

This paper presents two experiments to support the general hypothesis that the coordination of actions between individuals promotes the acquisition of cognitive coordinations. The first experiment shows that two children, working together, can successfully perform a task involving spatial coordinations; children of the same age, working alone, are not capable of performing the task. The second experiment shows that subjects who did not possess certain cognitive operations involved in Piaget's conservation of liquids task acquire these operations after having actualized them in a social coordination task.     

Instrumentation for an electrocutaneous communication device

The device described is a prototype that uses spatiotemporal resolution for electrocutaneous stimulation. Signals initiated through a keyboard activate a matrix of four electrodes that may be applied to the fingers, forearm, abdomen, back, or other parts of the integument. The instrumentation described includes a pulse generator, the active time and delay time controls, the control of the total length of a pulse train, and the constant-current generators whose output is fed into the electrodes. This device may be used as an interface with an alphanumeric device (e.g., a calculator or computer) and as a basic instrument in research investigating the spatial and temporal resolving capacities of the skin senses.