The memory is in the details: Relations between memory for the specific features of events and long-term recall during infancy

The second year of life is marked by pronounced changes in the length of time over which events are remembered. We tested whether the age-related differences are related to differences in memory for the specific features of events. In our study, 16- and 20-month-olds were tested for immediate and long-term recall of individual actions and temporal order of actions of three-step sequences in an elicited imitation paradigm as well as for forced-choice recognition of the specific feature of the props used to produce the sequences. Memory for the props was related to long-term recall of the events only for the 20-month-olds. It accounted for unique variance above and beyond the variance explained by immediate recall of the individual actions and the temporal order of actions of the sequences. The different pattern of relations in the older and younger infants seemingly reflects a developmental difference in the determinants of long-term recall over the second year of life.     

The Role of Maternal Verbal, Affective, and Behavioral Support in Preschool Children's Independent and Collaborative Autobiographical Memory Reports

The authors investigated the individual and relative contributions of different aspects of maternal support (i.e., verbal, affective, and behavioral) in relation to children's collaborative and independent reminiscing. Four-year-old children discussed personal past experiences with their mothers and with a researcher. In collaborative recall with their mothers, children's narrative behavior was regulated best by maternal use of specific elaborative components, such as affirmations. In contrast, in children's independent recall, affective and behavioral qualities of maternal support were related to children's memory performance. Specifically, during free-recall, the dimensions of quality of instruction and respect for autonomy were significant predictors of children's narratives. In the context of prompted recall (supported by wh-questions), respect for autonomy was the only significant predictor of children's involvement in the conversations and of the amount of unique content they provided. The findings suggest that different aspects of maternal behavior facilitate different components of children's reminiscing skills, which children might apply depending on demands of the autobiographical memory conversation.     

Outcome of aggression affects processing and can legitimise subsequent aggression: Influence of trait aggressiveness

The present study investigated differences in processing times between positive and negative outcomes to an aggressive reaction to provocation. The effects of outcome, sex, trait aggressiveness and current mood on subsequent subject‐generated material were also examined. Fifty subjects read stories line by line on a computer screen. Reading time for the key sentence describing a positive or negative outcome to an aggressive reaction to provocation was recorded and subjects wrote a continuing sentence to half the stories. Subjects took less time to process the negative outcome. The positive outcome resulted in more subject‐generated aggression than the negative outcome. There were few sex differences but men wrote more aggressive endings than women for the stories containing physical aggression. Trait aggressiveness was correlated with producing more aggressive content in the continuing sentence for both outcomes. Feeling peaceful was correlated with producing prosocial material to neutral stories. Subjects therefore expect a negative outcome to aggressive behaviour. Reading stories which present a positive outcome to aggression increases the accessibility of aggressive cognitions. Subjects high in trait aggressiveness are not inhibited by a negative outcome. Aggr. Behav. 30:284–297, 2004. © 2004 Wiley‐Liss, Inc.     

A Field Study of the Role of Big Five Personality in Applicant Perceptions of Selection Fairness,Self, and the Hiring Organization

Although there is a growing applicant reactions literature, relatively little work has addressed the role of personality in applicant perceptions. Using a sample of actual law enforcement applicants (N=120), we studied the relationship between Big Five personality measured before a written test and applicants' post‐test fairness perceptions, perceptions of themselves, and perceptions of the hiring organization. Personality was related to applicant perceptions after controlling for gender and test score. Personality also accounted for significant variance in self‐perceptions and perceptions of the hiring organization beyond that accounted for by fairness perceptions. Neuroticism and agreeableness were the most consistent predictors of applicant perceptions. Our discussion focuses on the consideration of individual differences in applicant reactions research.     

Reactions to Organizational Alcohol Testing and Treatment Programs

We used organizational justice theory to explore reactions to employer-sponsored alcohol testing and alcohol treatment policies among a sample (N = 1,777) of the employed public in a western state. Level of alcohol use and safety-sensitivity of the job were related to the perceived fairness of alcohol testing. In addition, voluntary treatment policies were rated more positively than coerced or monitored policies in terms of fairness and organizational attractiveness. Alcohol use moderated the effects of treatment policy on perceived fairness and organizational attractiveness, although the effect sizes were small. These results support the use of organizational justice theory to explain reactions to organizational alcohol testing and treatment and provide a basis for future research in this area.     

Extra‐Role Behavior among Mexican Employees: The Impact of LMX,Group Acceptance,and Job Attitudes

The current field study took place within a Mexican work setting, consisting of 100 white‐collar employees representing a variety of professional job categories. The study investigated the direct effect of the supervisor–employee relationship (leader–member exchange) quality and group acceptance on employees' propensity to engage in activities beyond their formal work roles (extra‐role behavior). The mediating influences of the employees' job satisfaction level and organizational commitment were also taken into consideration when accounting for extra‐role behavior. Results suggest that relationships Mexican employees share with their supervisor have a direct impact on their extra‐role behavior. Social exchange, key to both extra‐role behavior and leader–member exchange, is proposed as the operating mechanism associating the two constructs. Results also indicate that organizational commitment plays a partial mediating role between leader–member exchange and extra‐role behavior.     

Stress, glucocorticoids and ageing of the immune system

Ageing has been associated with immunological changes (immunosenescence) that resemble those observed following chronic stress or glucocorticoid (GC) treatment. These changes include thymic involution, lower number of na?ve T cells, reduced cell-mediated immunity, and poor vaccination response to new antigens. It follows that immunosenescence could be associated with changes of peripheral GC levels. Indeed, when compared with young subjects, healthy elders are more stressed and show activation of the hypothalamus-pituitary-adrenal (HPA) axis. However, both beneficial and undesirable effects of GCs ultimately depend on the target tissue sensitivity to these steroids. Recent data indicate that peripheral lymphocytes from elders respond poorly to GC treatment in vitro. The present review summarizes recent findings which suggest that immunosenescence may be closely related to both psychological distress and stress hormones. Furthermore, chronically stressed elderly subjects may be particularly at risk of stress-related pathology because of further alterations in GC-immune signalling. Finally, the neuroendocrine hypothesis of immunosenescence is finally reconsidered in which the age-related increase in the cortisol/DHEA ratio is major determinant of immunological changes observed during ageing.     

Understanding the emotional past: relations between parent and child contributions in emotionally negative and nonnegative events

The past event conversations of 33 mothers with their 3-year-old children (18 girls and 15 boys) were selected from a larger sample based on their discussion of negative events. Negative events included both those that were negative in topic and those that contained negative incidents but were otherwise positively themed. Within-subjects comparisons were made between the negative events and a neutral or positive event. There were few differences in how mothers and their children talked about negative and nonnegative events. Children did include more interpretations (internal state and causal references) in their negative event conversations. For both event types, mothers who talked more about the past events had children who reported more. When maternal talkativeness was controlled, involving children in the negative event conversations through deflecting the conversational turn predicted children's total contributions and number of interpretations. Repeating information and requests for information while constraining the topic was negatively related to the number of details children reported for nonnegative past events. Conversations about minor negative experiences demonstrate that mothers can influence children's involvement in discussions and understanding of the past.     

Internetchatgruppen in Psychotherapie und Psychosomatik

Zusammenfassung  In Zusammenarbeit mit der Techniker Krankenkasse (TK) und der Panorama-Fachklinik für Psychosomatik, Psychotherapeutische Medizin und Naturheilverfahren Scheidegg/Allgäu hat die Forschungsstelle für Psychotherapie das Projekt Internetbrücke initiiert. Die Patienten erhielten im Anschluss an ihre stationäre Behandlung das Angebot, für 12–15 Wochen an einer Gruppe teilzunehmen, die sich in einem speziell eingerichteten Chatraum wöchentlich traf. Das Projekt hatte die Ziele: (a) eine geeignete Internetumgebung für eine vertrauliche Kommunikation aufzubauen und deren Praktikabilität zu testen sowie (b) die Akzeptanz durch die Patienten und die Wirksamkeit zu evaluieren. Zur Evaluation wurde eine prospektive kontrollierte Studie durchgeführt. Chatteilnehmer (n=114) wurden mit einer gematchten Vergleichsgruppe (n=114) hinsichtlich ihres Gesundheitszustands ein halbes Jahr nach der Klinikentlassung verglichen. Die Technik erwies sich als robust und nutzerfreundlich. Das Angebot wurde sehr positiv von den Patienten aufgenommen; dies drückte sich u. a. in der niedrigen Abbruchrate (9,4%) und der hohen Akzeptanz (83,7% der Chatteilnehmer hielten eine Internetbrücke für sinnvoll) aus. Die Chatteilnehmer konnten die während der stationären Behandlung erreichten positiven Entwicklungen – gemessen mit dem globalen Kriterium der Stuttgart-Heidelberger Qualitätssicherung – besser erhalten als die Vergleichsgruppe (p<0,05). Es zeigten sich Vorteile für die Chatteilnehmer im Hinblick auf das psychische Befinden, während die Unterschiede im körperlichen Befinden eher gering waren. Die Konsequenzen für die psychosoziale Versorgung werden diskutiert.

Local solutions in the estimation of growth mixture models

Finite mixture models are well known to have poorly behaved likelihood functions featuring singularities and multiple optima. Growth mixture models may suffer from fewer of these problems, potentially benefiting from the structure imposed on the estimated class means and covariances by the specified growth model. As demonstrated here, however, local solutions may still be problematic. Results from an empirical case study and a small Monte Carlo simulation show that failure to thoroughly consider the possible presence of local optima in the estimation of a growth mixture model can sometimes have serious consequences, possibly leading to adoption of an inferior solution that differs in substantively important ways from the actual maximum likelihood solution. Often, the defaults of current software need to be overridden to thoroughly evaluate the parameter space and obtain confidence that the maximum likelihood solution has in fact been obtained.