The neural correlates of implicit and explicit sequence learning: Interacting networks revealed by the process dissociation procedure

In two H2(15)O PET scan experiments, we investigated the cerebral correlates of explicit and implicit knowledge in a serial reaction time (SRT) task. To do so, we used a novel application of the Process Dissociation Procedure, a behavioral paradigm that makes it possible to separately assess conscious and unconscious contributions to performance during a subsequent sequence generation task. To manipulate the extent to which the repeating sequential pattern was learned explicitly, we varied the pace of the choice reaction time task-a variable that is known to have differential effects on the extent to which sensitivity to sequence structure involves implicit or explicit knowledge. Results showed that activity in the striatum subtends the implicit component of performance during recollection of a learned sequence, whereas the anterior cingulate/mesial prefrontal cortex (ACC/MPFC) supports the explicit component. Most importantly, we found that the ACC/MPFC exerts control on the activity of the striatum during retrieval of the sequence after explicit learning, whereas the activity of these regions is uncoupled when learning had been essentially implicit. These data suggest that implicit learning processes can be successfully controlled by conscious knowledge when learning is essentially explicit. They also supply further evidence for a partial dissociation between the neural substrates supporting conscious and nonconscious components of performance during recollection of a learned sequence.     

Construct validity of the Global Assessment of Functioning Scale for clients with anxiety disorder

The Global Assessment of Functioning Scale is a widely used although poorly researched measurement of overall mental health or illness. This study investigated construct validity for clients with anxiety disorder. Analysis suggests that current suicidality was the most significant predictor of ratings. Current homicidality, work/school problems, and inability to care for oneself were not significantly correlated with scale ratings.     

An olfactometer for small rodents

An olfactometer that captures and delivers biological odors at experimenter-controlled times, without dilution, is described. The apparatus is quiet, efficient, versatile, animal-safe, and fairly inexpensive. Tests indicate that the device is successful in isolating transitory odors.     

Sex stereotypes and implicit personality theory: Toward a cognitive—Social psychological conceptualization

Progress in understanding sex stereotypes has been impeded by the failure of researchers to address two critical conceptual questions: What is a sex stereotype? How do sex stereotypes function in social cognition and behavior? As a step toward answering the first question, the meaning of the term “sex stereotype” was considered. On the basis of points of agreement among extant conceptual definitions of the construct “stereotype” (in both the female-male and ethnic relations literatures), a generic definition of “sex stereotypes” is proposed: the structured sets of beliefs about the personal attributes of women and of men. In order to relate sex stereotypes more closely to research and theory on “normal” psychological processes, this basic definition is recast in terms of the person perception construct, “implicit personality theory”: the structured sets of inferential relations that link personal attributes to the social categories female and male. Two studies are presented to illustrate the utility of this translation. The remainder of the article addresses the second question. Here we offer preliminary ideas regarding a more general cognitive—social psychological framework for the study of sex stereotypes. Stereotype and stereotyping are distinguished, and each is discussed in light of relevant research in cognitive and social psychology.     

‘What meaning does somebody's death have,what meaning does somebody's life have?’ Psychotherapists’ stories of their work with suicidal clients

Working with suicidal clients is perceived to be demanding and anxiety provoking for psychotherapists. This investigation explores what it is like for psychotherapists who work with suicidal clients, particularly as within the prevailing culture there is an increasing focus on strategies aimed at suicide prevention. Five themes were identified through narrative analysis, with support systems such as supervision and peer support being seen as vital in surviving working with suicidal clients. However, there is also ambivalence about involving other professionals, such as mental health services, as there is a sense that to do so may be anti-therapeutic and unhelpful to the client. Overall, what emerges from this study is that it is important to challenge the prevailing culture in which a medical discourse is dominant, in order to find a different way of talking about suicide and despair.     

Cross-modal and intra-modal binding between identity and location in spatial working memory: The identity of objects does not help recalling their locations

In this study we tested incidental feature-to-location binding in a spatial task, both in unimodal and cross-modal conditions. In Experiment 1 we administered a computerised version of the Corsi Block-Tapping Task (CBTT) in three different conditions: the first one analogous to the original CBTT test; the second one in which locations were associated with unfamiliar images; the third one in which locations were associated with non-verbal sounds. Results showed no effect on performance by the addition of identity information. In Experiment 2, locations on the screen were associated with pitched sounds in two different conditions: one in which different pitches were randomly associated with locations and the other in which pitches were assigned to match the vertical position of the CBTT squares congruently with their frequencies. In Experiment 2 we found marginal evidence of a pitch facilitation effect in the spatial memory task. We ran a third experiment to test the same conditions of Experiment 2 with a within-subject design. Results of Experiment 3 did not confirm the pitch–location facilitation effect. We concluded that the identity of objects does not affect recalling their locations. We discuss our results within the framework of the debate about the mechanisms of “what” and “where” feature binding in working memory.     

Processing valence and intensity of infant expressions: the roles of expertise and gender

Several studies have provided evidence of a women's better accuracy in interpreting emotional states. Despite this difference is generally ascribed to the primary role of female gender in the affective relation with the offspring, to date, little information is available regarding gender differences in the ability to interpret infant facial expressions. In the present study, we examined the roles of gender and expertise in interpreting infant expression in 34 men and women who differed in their experience with infants. Women showed a significantly higher level of decoding accuracy compared to men. Expertise positively affected facial expressions decoding among women only. Our results suggest that in judging emotional facial expressions of infants, there is an interaction of biological (i.e., gender) and cultural factors that is independent of a woman's socioeconomic status.     

Masculinity and femininity scales: current state of the art

A theoretical and empirical review of masculinity and femininity scales was carried out after 30 years of their existence. Hypotheses to be tested were: (a) muldimensionality versus bidimensionality; (b) inadequate percentage of variance accounted for (less than 50%); (c) inconsistency between factor structure and the dualistic model. 618, 200 and 287 students took part in each of the three studies that were carried out. Factorial analyses (PAF) were performed. Results support multidimensionality, unsatisfactory percentage of variance accounted for, and lack of congruence between obtained factors and the dualistic model. All these data were analysed within the context of the twofold sex and gender reality model.