Individual differences in insular sensitivity during loss anticipation predict avoidance learning

The anterior insula has been implicated in both the experience and the anticipation of negative outcomes. Although individual differences in insular sensitivity have been associated with self-report measures of chronic anxiety, previous research has not examined whether individual differences in insular sensitivity predict learning to avoid aversive stimuli. In the present study, insular sensitivity was assessed as participants anticipated monetary losses while undergoing functional magnetic resonance imaging. We found that insular responsiveness to anticipated losses predicted participants' ability to learn to avoid losses (but not to approach gains) in a behavioral test several months later. These findings suggest that in addition to correlating with self-reported anxiety, heightened insular sensitivity may promote learning to avoid loss.     

“Not Thinking” Helps Reasoning

Despite previous research suggesting that participants’ negative and positive emotions can impair and facilitate reasoning performance, a recent study proposes that the emotional content of the mood induction materials may not be crucial in eliciting these phenomena—deontic selection task performance is as poor when these materials are neutral as when they are negative (Perham and Oaksford 2006). We extend this finding to syllogistic reasoning performance. Participants in the mood induction conditions (negative and neutral) verbally described their experiences in relation to twenty negative or neutral words whereas participants in the control condition received no such mood induction. Subsequent syllogistic reasoning performance was significantly poorer for both mood induction conditions yet only those in the negative mood induction condition showed a significant increase in anxiety. Results imply that the key mechanism involved in the impairment derives from the production of irrelevant thoughts and that these need not be linked to a positive or negative mood, thus “not thinking” may actually help the reasoning process.     

Game relativity: how context influences strategic decision making

Existing models of strategic decision making typically assume that only the attributes of the currently played game need be considered when reaching a decision. The results presented in this article demonstrate that the so-called "co-operativeness" of the previously played prisoner's dilemma games influence choices and predictions in the current prisoner's dilemma game, which suggests that games are not considered independently. These effects involved reinforcement-based assimilation to the previous choices and also a perceptual contrast of the present game with preceding games, depending on the range and the rank of their co-operativeness. A. Parducci's (1965) range frequency theory and H. Helson's (1964) adaptation level theory are plausible theories of relative judgment of magnitude information, which could provide an account of these context effects.     

Repetition learning in the immediate serial recall of visual and auditory materials

In 5 experiments, a Hebb repetition effect, that is, improved immediate serial recall of an (unannounced) repeating list, was demonstrated in the immediate serial recall of visual materials, even when use of phonological short-term memory was blocked by concurrent articulation. The learning of a repeatedly presented letter list in one modality (auditory or visual) did not transfer to give improved performance on the same list in the other modality. This result was not replicated for word lists, however, for which asymmetric transfer was observed. Inferences are made about the structure of short-term memory and about the nature of the Hebb repetition effect.     

The impact of cognitive deficits on conflict monitoring. Predictable dissociations between the error-related negativity and N2

Monitoring of ongoing processing plays a critical role in regulating cognitive function. Two event-related potential components, the error-related negativity (ERN) and N2, have been proposed to reflect this monitoring function. Specifically, it has been suggested that both components reflect the role of anterior cingulate cortex (ACC) in monitoring for the occurrence of response conflict. This view appears to be challenged by findings that alcohol consumption and lesions in ACC have dissociable effects on the ERN and N2. Using a computational model, the present research demonstrates that the conflict-monitoring theory can account for these dissociations in terms of the dissociable effects of alcohol and ACC lesions on processing of relevant stimulus information (which determines ERN amplitude) and processing of irrelevant, distracting information (which determines N2 amplitude). The simulation results suggest new interpretations of the cognitive deficits caused by alcohol consumption (impaired stimulus processing) and ACC lesions (impaired attentional control).     

Understanding supervisor-targeted aggression: a within-person, between-jobs design

The authors investigated predictors of supervisor-targeted workplace aggression among 105 "moonlighters" (employed adults who work 2 jobs, each with a different supervisor), as a way of examining the relative role played by within-subject situational differences and between-subjects individual differences. Individual difference variables (self-esteem, history of aggression) explained a similar level of variance in aggression across both jobs, whereas situational factors (interactional injustice, abusive supervision) were job specific and explained proportionally more variance than did individual differences.     

Absolute identification by relative judgment

In unidimensional absolute identification tasks, participants identify stimuli that vary along a single dimension. Performance is surprisingly poor compared with discrimination of the same stimuli. Existing models assume that identification is achieved using long-term representations of absolute magnitudes. The authors propose an alternative relative judgment model (RJM) in which the elemental perceptual units are representations of the differences between current and previous stimuli. These differences are used, together with the previous feedback, to respond. Without using long-term representations of absolute magnitudes, the RJM accounts for (a) information transmission limits, (b) bowed serial position effects, and (c) sequential effects, where responses are biased toward immediately preceding stimuli but away from more distant stimuli (assimilation and contrast).     

The politics of the gaze: Between Foucault and Merleau-Ponty

An earlier version of this paper was presented at the Theory and Society seminars, University of Sheffield, England, on 7th February 1992. Thanks are due to all participants for their helpful comments, especially Nick Stevenson. Thanks also to Maurice Roche and Michele Davies for their help and comments.     

Group process in short-term outpatient therapy groups for schizophrenics

The short form of the group climate questionnaire (GCQ-S) was used to evaluate process in three 12-session therapy groups for outpatient schizophrenics. Results showed no difference on the Engaged dimension between the short-term schizophrenic groups and either a normative sample of outpatient neurotic groups or the first 26 sessions of a long-term outpatient schizophrenic group. However, the short-term groups scored significantly lower (p<.001) on the Avoiding and Conflict dimensions as compared with either long-term sample. The session-to-session GCQ-S dimension pattern did not support the presence of sequential group stages, but there was a tendency for the Engaged scores to increase and the Avoiding and Conflict scores to decrease as time went on.The authors gratefully acknowledge K. Roy MacKenzie, M.D., and Don Brown, M.D., for their helpful comments regarding this paper. Parts of this paper were presented in a poster session at the American Group Psychotherapy Association Annual Meeting in New York, February 8–12, 1988.