Using fMRI to investigate

Using fMRI, we investigated the functional organization of prefrontal cortex (PFC) as participants briefly thought of a single just-experienced item (i.e., refreshed an active representation). The results of six studies, and a meta-analysis including previous studies, identified regions in left dorsolateral, anterior, and ventrolateral PFC associated in varying degrees with refreshing different types of information (visual and auditory words, drawings, patterns, people, places, or locations). In addition, activity increased in anterior cingulate with selection demands and in orbitofrontal cortex when a nonselected item was emotionally salient, consistent with a role for these areas in cognitive control (e.g., overcoming “mental rubbernecking”). We also found evidence that presenting emotional information disrupted an anterior component of the refresh circuit. We suggest that refreshing accounts for some neural activity observed in more complex tasks, such as working memory, long-term memory, and problem solving, and that its disruption (e.g., from aging or emotion) could have a broad impact.     

Bottom-up influences on working memory: behavioral and electrophysiological distraction varies with distractor strength

The present study investigates bottom-up effects serving the optimal balance between focusing attention on relevant information and distractibility by potentially significant events outside the focus of attention. We tested whether distraction, indicated by behavioral and event-related brain potential (ERP) measures, varies with the strength of task-irrelevant deviances. Twenty subjects performed a tone-duration discrimination task (200 or 400 ms sinusoidal tones presented equiprobably). The stimuli were presented with frequent standard (p = 0.84; 1000 Hz) or infrequent deviant (p = 0.16) pitch. These task-irrelevant pitch changes consisted in a frequency increase/decrease of 1%, 3%, 5%, or 10%. Each of them resulted in prolonged reaction times (RT) in the duration discrimination task and elicited the MMN, P3a, and RON components of the ERP. Importantly, these measures did increase as a function of pitch deviance. Separating the individual trials on the 1% deviation level into trials with and without RT prolongation, i.e., behavioral distraction effect, revealed that both subgroups had similar MMN, but P3a and RON were confined to the trials with RT prolongation. Results are interpreted within a model relating preattentive deviance detection, distraction, and working memory.     

An assessment of the contributions of general mental ability and personality characteristics to management success

This study investigated the relationship of general mental ability and a select set of personality characteristics to a constructed criterion of management success which reflected relative rate of career progress. Data were collected in the context of an operational individual assessment program from a total of 296 persons in nonmanagement up through top management positions in a variety of service and manufacturing organizations. Primary (n=148) and hold-out (n=148) samples were identified and a stepwise multiple regression analysis was performed on the primary sample. Cross-validation indicated that a two-variable linear composite accounted for 20.9% of the variance in the dependent variable.     

Post‐incarceration Recidivism of Lone versus Group Juvenile Homicide Offenders

Killings by juvenile homicide offenders (JHOs) who use accomplices have been increasing since the 1980s and currently represent approximately half of juvenile arrests for murder in the United States. Nevertheless, prior research has not compared JHOs who kill alone with JHOs who kill in groups. The present research followed up 30 years later on a sample of 59 male murderers and attempted murderers sentenced to adult prison. This study was designed to analyze whether lone and group JHOs differed on pre‐incarceration, incarceration, and post‐incarceration variables. Significant findings indicated that compared with lone offenders, group JHOs had a higher mean of pre‐homicide arrests and were more likely to be Black, have a pre‐homicide delinquent record, commit a crime‐related homicide offense, and target a stranger. With respect to post‐homicide variables, group JHOs were more likely to be released from prison and more likely to be rearrested. The two types of JHOs did not differ significantly in relation to the number of post‐release violent offenses. Preliminary implications of the findings and avenues for future investigation are discussed. Copyright © 2016 John Wiley & Sons, Ltd.     

The nature of memory processes underlying recognition judgments in the process dissociation procedure

The hypothesis is tested that the memory processes involved in recognition judgments in the process dissociation procedure are the same as those involved in standard source-monitoring tasks. It is shown how source-monitoring response categories can be mapped onto process dissociation response categories. On the basis of this observation, an experiment was conducted in which it was possible to compare, using a multinomial modeling approach, the parameters representing memory processes in the process dissociation procedure with those involved in source monitoring. For the two different encoding conditions realized, the results are compatible with the hypothesis that the same processes are involved in source monitoring and in recognition judgments in the process dissociation procedure. Implications for the interpretation of the model’s parameters are discussed.     

FINDING AN APPROPRIATE ETHIC IN A WORLD OF MORAL ACQUAINTANCES

This paper discusses the possibility of finding an ethic of at least partial and perhaps ever-growing content in a world not that of moral strangers (where we have nothing except our desire to live freely to unite us) and one of moral friends (in which values, goals and ways of doing things are held in common). I argue that both the world of moral strangers which Engelhardt's world view would support, as the world of moral friends which is the one Pellegrino seeks both are untenable and that furthermore both can lead to a similar state of affairs. I suggest a dynamic world of moral acquaintances in which different belief systems and ways of doing things can come to some broad agreements about some essential thing. This is made possible because although we do not share the intimate framework Pellegrino might suggest, yet we are united by a much broader framework than the one moral strangers share.     

Philosophy and its role in medicine: Inaugurating a new section

This section, then, has a wide potential. Searching for the sources of truth or fashioning the truth is, I have suggested, a social activity: one in which thinkers from various fields and from disparate points of view and cultures exchange and discuss various approaches in various points of view. Whether that potential is realized depends on you the writers and readers. I invite responses for all papers published in this section as, indeed, we do for any published in the Journal.     

The cognitive structure of choice dilemma decisions

We tried to find out why Ss chose a specific risk level. We, therefore, constructed a questionnaire with 30 statements about aspects of the contents of the choice dilemmas. A factor analysis of the 30 statements over ten choice dilemmas and 61 field-officers led to a structure of four cognitive elements. With these four factors as predictors we could explain a main part of the variance of the individual risk level of each choice dilemma. This regression analysis was done with normal product-moment-correlations and with scalar-products. Both analyses show great similarity, although it seemed to be better to use scalar-products because one can use the information of the means. The four cognitive elements could be interpreted as: (1) Decision-making strategy; (2) Responsibility for others; (3) Reputation; (4) Socially valued riskiness.