Doing cognitive neuroscience: a third way

The “top-down” and “bottom-up” approaches have been thought to exhaust the possibilities for doing cognitive neuroscience. We argue that neither approach is likely to succeed in providing a theory that enables us to understand how cognition is achieved in biological creatures like ourselves. We consider a promising third way of doing cognitive neuroscience, what might be called the “neural dynamic systems” approach, that construes cognitive neuroscience as an autonomous explanatory endeavor, aiming to characterize in its own terms the states and processes responsible for brain-based cognition. We sketch the basic motivation for the approach, describe a particular version of the approach, so-called ‘Dynamic Causal Modeling’ (DCM), and consider a concrete example of DCM. This third way, we argue, has the potential to avoid the problems that afflict the other two approaches.     

Process Versus Outcome Thought Focus and Advertising

Recent social psychological research demonstrates that certain types of mental simulation are particularly useful for helping individuals reach the future they envision (e.g., Taylor, Pham, Rivkin, & Armor, 1998). More specifically, Taylor's (Pham, Taylor, 1999; Taylor et al., 1998) recent research indicates that the most successful simulations focus on the process of reaching a goal rather than on the outcomes or attainment of the goal. In this article, we extend consideration of process‐ versus outcome‐focused thought to advertising. In studies manipulating the focus of participants’ thoughts while viewing a print advertisement, we find that process‐focused thought results in significantly higher behavioral intentions than outcome‐focused thought when advertisement arguments are strong. However, in the case of weak advertisement arguments, process‐focused thought actually lowers behavioral intentions compared to thoughts focusing on the end result or outcome of product usage. Thus, in addition to increasing the persuasive power of strong advertising claims, process‐focused thinking appears to make individuals better or more discerning consumers who do not form behavioral intentions when it is inappropriate to do so.     

“Alkie,”“Frat Brother,” and “Jock”: Perceived Types of College Students and Stereotypes About Drinking1

Two studies assessed perceived types of college students and associated stereotypes about drinking. In the first study, 64 university students responded to an open‐ended probe asking them to list types of college students and then rated the amount of drinking done by each of a set of preselected types. In the second study, 236 students responded to the same open‐ended item and directly rated a set of types that had been revised based on Study 1 in terms of drinking and involvement in the academic and sociosexual collegiate subcultures. As hypothesized, consensual responses to the open‐ended probe reflected the college student culture. Also as hypothesized, types of students socially defined in terms of the sociosexual aspects of college (e.g., “fraternity boy”) were rated as likely to drink heavily, whereas types that were seen as being pulled away from college social life, through assumed involvement in academics (e.g., “brain/straight As”), were rated as drinking relatively little. Finally, rated sociosexual involvement was positively correlated, and academic involvement was negatively correlated, with perceived drinking, which supports a central assumption of the framework guiding the research.     

The concept of Lichnost’ in criminal law theory, 1860s–1900s

This essay discusses criminal law theories in late Imperial Russia. It argues that, although the political climate of Reform and Counter Reform effectively undermined attempts to implement new legislation premised on the idea of the ‘rights-enabled person’ (pravovaya lichnost’), paradoxically, it fostered the growth of juridical scholarship. Russian criminal law theorists engaged critically with Western juridical science, which, beginning in the 1870s, witnessed a shift away from absolutist theories inspired by the classics of philosophical idealism towards various strains of positivism arguing for the restoration of the person as a concrete, physiological being. However, while Russian scholars were drawn to these new trends of criminal anthropology and the sociology of crime, they were also obliged to take stock of an indigenous legal culture that scarcely differentiated between pravo and zakon, together with a long tradition of customary practices that equated crime and punishment with sin and redemption.     

Genes in Context: Gene–Environment Interplay and the Origins of Individual Differences in Behavior

ABSTRACT— Interactions between genes and the environment are a critical feature of development. Insights into the dynamic interplay between these factors have come from laboratory studies exploring experience-dependent changes in gene function, which illustrate the importance of environmental factors in determining activity of the genome. These studies have implications for our understanding of the origins of individual differences in behavior and may provide new ways of thinking about the transmission of traits across generations. Here we will highlight how these new findings illustrate the importance of putting genes in context.     

Coarse threat images reveal theta oscillations in the amygdala: A magnetoencephalography study

Neurocognitive models propose a specialized neural system for processing threat-related information, in which the amygdala plays a key role in the analysis of threat cues. fMRI research indicates that the amygdala is sensitive to coarse visual threat relevant information—for example, low spatial frequency (LSF) fearful faces. However, fMRI cannot determine the temporal or spectral characteristics of neural responses. Consequently, we used magnetoencephalography to explore spatiotemporal patterns of activity in the amygdala and cortical regions with blurry (LSF) and normal angry, fearful, and neutral faces. Results demonstrated differences in amygdala activity between LSF threat-related and LSF neutral faces (50–250 msec after face onset). These differences were evident in the theta range (4–8 Hz) and were accompanied by power changes within visual and frontal regions. Our results support the view that the amygdala is involved in the early processing of coarse threat related information and that theta is important in integrating activity within emotion-processing networks.     

A Comparison of Behavioral Parent Training Programs for Fathers of Children With Attention-Deficit/Hyperactivity Disorder

Few behavioral parent training (BPT) treatment studies for attention-deficit/hyperactivity disorder (ADHD) have included and measured outcomes with fathers. In this study, fathers were randomly assigned to attend a standard BPT program or the Coaching Our Acting-Out Children: Heightening Essential Skills (COACHES) program. The COACHES program included BPT plus sports skills training for the children and parent-child interactions in the context of a soccer game. Groups did not differ at baseline, and father ratings of treatment outcome indicated improvement at posttreatment for both groups on measures of child behavior. There was no significant difference between groups on ADHD-related measures of child outcome. However, at posttreatment, fathers who participated in the COACHES program rated children as more improved, and they were significantly more engaged in the treatment process (e.g., greater attendance and arrival on time at sessions, more homework completion, greater consumer satisfaction). The implications for these findings and father-related treatment efforts are discussed.     

The influence of chemical cues on the territorial prior residence effect in convict cichlids (cichlasoma nigrofasciatum Günther)

The importance of accumulated chemical cues on the occurrence of the territorial prior residence effect was investigated in two experiments using adult convict cichlids (Cichlasonul nigrofasciatum). In the first experiment, pairs of fish, matched on a number of criteria, were randomly assigned to three independent treatment conditions in which (1) the territorial marker (pot or clump of plants) was removed just prior to a direct encounter in the aquarium of the resident (pair member in whose aquarium the encounter took place) with accumulated chemical cues remaining intact; (2) the marker was removed, as well as the chemical cues; or (3) the marker was present, but the chemical cues were removed. Results showed that a significant prior residence effect occurred when the marker was present, but did not occur in either condition in which the marker was removed. A second experiment, in which the marker was removed and the gravel substrate altered, also did not reveal a signficant prior residence effect. Apparently, the territorial resident recognizes his territory by using certain visual cues, with accumulated chemical cues being neither necessary nor sufficient in this process.     

Within-session changes in operant responding when gerbils (Meriones unguiculatus) serve as subjects

Recent research has demonstrated that rate of responding frequently changes in a robust and systematic manner during experimental sessions in which organisms engage in operant responding. One potential cause for these changes in response rate is that levels of exploration change during experimental sessions and that high levels of exploration interfere with operant responding. Several studies have shown that gerbils (Meriones unguiculatus) explore at a constant rate during experimental sessions. The present study examined the response pattern produced by gerbils responding for food delivered by several simple schedules of reinforcement. Results indicated that robust changes (between 200 and 400%) in response rate occurred during the experimental sessions. These data argue against a role for exploration in the production of within-session changes in operant response rate.