Dynamics of communication in emergency management

This study investigated the dynamics of communication between members of an emergency management team faced with controlling a hazardous chemical spill. The effects of two sets of factors on communication were investigated; task‐specific factors pertaining to characteristics of the emergency management task that are constant across different emergency situations, and situation‐specific factors pertaining to the unique characteristics of the current situation. The results showed that both these factors were important in determining the pattern of communication between key team members. Verbal exchanges were found both to be correlated with the occurrence of critical events and to follow a 30‐minute temporal cycle. The implications of the results for theories of naturalistic decision making are discussed. Copyright © 2002 John Wiley & Sons, Ltd.     

Temporal isolation does not facilitate forward serial recall—or does it?

In numerous recent studies in short-term memory, it has been established that forward serial recall is unaffected by the temporal isolation of to-be-remembered items. These findings contradict the temporal distinctiveness view of memory, which expects items that are temporally isolated from their neighbors to be more distinct and hence remembered better. To date, isolation effects have only been found with tests that do not constrain output order, such as free recall. This article reports two experiments that, for the first time, report a temporal isolation effect with forward serial recall, using a running memory task in which the end of the list is unpredictable. The results suggest that people are able to encode and use temporal information in situations in which positional information is of little value. We conclude that the overall pattern of findings concerning temporal isolation supports models of short-term memory that postulate multidimensional representations of items.     

Adapting to life’s slings and arrows: Individual differences in resilience when recovering from an anticipated threat

Following highly negative events, people are deemed resilient if they maintain psychological stability and experience fewer mental health problems. The current research investigated how trait resilience [Block, J., & Kremen, A. M. (1996). IQ and ego-resiliency: Conceptual and empirical connections and separateness. Journal of Personality and Social Psychology, 70(2), 349–361, ER89] influences recovery from anticipated threats. Participants viewed cues (‘aversive’, ‘threat’, ‘safety’) that signified the likelihood of an upcoming picture (100% aversive, 50/50 aversive/neutral, or 100% neutral; respectively), and provided continuous affective ratings during the cue, picture, and after picture offset (recovery period). Participants high in trait resilience (HighR) exhibited more complete affective recovery (compared to LowR) after viewing a neutral picture that could have been aversive. Although other personality traits previously associated with resilience (i.e., optimism, extraversion, neuroticism) predicted affective responses during various portions of the task, none mediated the influence of trait resilience on affective recovery.     

Theoretizität im Logischen Empirismus und im Strukturalismus – erläutert am Fallbeispiel des Neurobiologischen Konstruktivismus

In this article I will compare two approaches for defining theoretical terms, that of Logical Empirism (especially the approach of R. Carnap) and that of Structuralism (according to the works of J. Sneed and W. Stegmüller). I will determine explicitly the accounts of theoreticity in both Logical Empirism and Structuralism, and compare them by means of a case study: a structuralistic reconstruction of Neurobiological Constructivism (according to the theory of G. Roth). I will point out that the structuralistic criticism on the account of theoreticity of Logical Empirism is insufficient and that the structuralistic criterion of theoreticity does not satisfy the requirements of demarcation for theoretical terms demanded by Logical Empirism.

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Empirical and theoretical limits on lag recency in free recall

One widely accepted empirical regularity in free recall holds that when people successively transition from report of one list item to another, they prefer transitions across short lags (e.g., by reporting items from adjacent serial positions) to transitions involving large lags. This regularity has provided crucial support for the temporal context model (TCM), a model of the evolution of temporal context in episodic memory (Howard & Kahana, 2002a). We report a reanalysis of 14 data sets that shows that, contrary to the presumed preference for short lags, people often produce transitions with larger lags during recall. We show that these data cannot be accommodated by the TCM. We furthermore show that existing applications of the model have, for mathematical convenience, introduced assumptions that have circumvented its core principle of context evolution. When we instantiated the TCM as it was actually described, with a gradually evolving context, we found that its behavior qualitatively departed from that of the version currently implemented, but that the model was still unable to capture the nature of transitions in free recall. We conclude that the TCM requires further modification and development before it can explain the data that constitute its main source of support. Supplementary materials relevant to this article can be downloaded from the Psychonomic Society’s Norms, Stimuli, and Data Archive, www.psychonomic .org/archive.     

Social processing improves recall performance

One recent theory (Dunbar, 2003) has highlighted the importance that processing social information might have had on the evolution of human cognition. Based on an analysis of that theory, researchers predicted that processing information in a social manner would improve recall performance in comparison with nonsocial processing. In order to test this prediction, three experiments were conducted in which participants studied 30-item word lists that were composed of common character traits (Experiment 1) or common category exem-plars (Experiments 2 and 3). Next, participants reviewed 5 list items that were purportedly recalled by either a group member or the computer. Finally, after a brief distractor task, participants were asked to complete an individual recall test for all of the items on the original 30-item list. Of primary interest was recall performance for the list items that were purportedly recalled by either another participant or the computer. We observed that recall performance for list items purportedly recalled by another participant was superior to that for items that were recalled by the computer.     

Sub-national Fiscal Activity as a Determinant of Individual Happiness: Ideology Matters

Though there has been a recent outpouring of studies on the determinants of individual happiness, there remains a paucity of research on the influence of specific sub-national government policies. Additionally, theoretical expectations about how fiscal variables influence happiness are unclear, making further empirical research imperative. Combining survey data and aggregate information about state and local government revenue and expenditures within the United States, we draw inferences about whether or not such activities affect individual happiness. We find no indication that the overall level of state or local fiscal activity affects life satisfaction. However, we offer evidence that personal happiness could be increased with an increase in the percentage of sub-national expenditure devoted to public safety. We also find that there are notable differences across ideological groups (conservatives, moderates, and liberals) with respect to how much public safety influences happiness, as well as how some other fiscal variables influence happiness. We conclude that ideology mediates the impact of fiscal variables on life satisfaction.     

ALTSim: A MATLAB simulator for current associative learning theories

ALTSim is a MATLAB-based simulator of several associative learning models, including Pearce’s configural model, the extended configural model, the Rescorla-Wagner model, the unique cue hypothesis, the modified unique cue hypothesis, the replaced elements model, and Harris’s elemental model. It allows for specifying all relevant parameters, as well as exact stimulus sequences by graphical user interfaces. It is an easy-to-use tool that facilitates evaluating and comparing the featured associative learning models. ALTSim is available free of charge from www.staff.uni-marburg.de/~lachnit/ALTSim/.