Apparent changes in the visual threshold as a function of subliminal stimulation: A preliminary report

A methodological difficulty in the traditional perceptual defence experiment is that of trying to use verbal reports as a measure of threshold changes. The following experiment handles this difficulty by using the method of closed loop control. The design involves obtaining from the subject a continuous record of his awareness threshold for light entering the left eye while verbal material, dichotomized regarding emotional value, is presented, below threshold to the right eye. The data from this first stage of the research provide some support for the hypothesis that the threshold of awareness will vary as a function of sub-threshold presentations.     

Work and motherhood: preliminary report of a psychoanalytic study

This paper reports preliminary findings of a systematic inquiry into the manifest experience of conflict between paid work and motherhood. Psychoanalytic principles inform the design of a questionnaire and a research interview and the interpretation of data derived from both sources. An initial review of material from 140 questionnaires and 65 clinical interview series suggests that women vary tremendously in the ease or difficulty with which they navigate real obstacles to the integration of paid work and motherhood. The quality of a woman's relationship with her mother emerges as a singularly powerful influence on her experience of work-family balance.     

Central executive function in mild cognitive impairment: a PET activation study

Using positron emission tomography (PET), we explored the neural correlates of an executive function, dual tasking, in patients with amnestic mild cognitive impairment (aMCI) and in elderly controls. The experiment employed simple auditory and visual tasks that were presented both in isolation and simultaneously to create a task condition requiring enhanced attentional control. Behaviorally, both groups performed well, albeit the patients made more errors on the visual task. The PET analysis focused at prefrontal regions where group differences in task-related activation patterns were expected. During dual task performance, the patients showed attenuated activity in the left inferior frontal region when compared to the controls. This suggests abnormalities in the neural processes underlying attentional control in aMCI.     

Tales of the unexpected: executive function and person perception

The present research investigated the role of executive functioning in person perception. Given the assumption that perceivers' recollective preference for unexpected material relies on the operation of an executive cognitive process (i.e., inconsistency resolution), it was anticipated that only under dual-task conditions in which executive functioning is impaired would one expect inconsistency resolution to be impaired and perceivers' memory bias for unexpected material to be eliminated. When concurrent mental activity impairs the operation of nonexecutive cognitive operations, inconsistency resolution and the related process of individuation were not expected to be impaired. The results of 2 experiments using different memory measures (e.g., free recall and source identification) supported these predictions. The findings are considered in the context of contemporary issues in person perception and executive functioning.     

Hans Reichenbach,radio philosopher: a preliminary report

Synthese - This essay looks at some of the key aspects of Hans Reichenbach’s career as a radio engineer, broadcaster, and producer. It argues that some of the themes of Reichenbach’s...     

Ageing, remembering, and executive function

This study was designed to investigate the relationship between executive functions and the age-related decline in episodic memory through the states-of-awareness approach. Following the presentation of a word list, a group of younger adults and a group of older adults undertook a recognition test in which they classified their responses according to the Remember-Know-Guess procedure (Gardiner & Richardson-Klavehn, 2000). In order to operationalise the executive function hypothesis, we investigated three specific executive functions (updating, shifting, and inhibition of a prepotent response) described in Miyake et al.'s (2000) theoretical model, and a complex executive task. The results revealed that fewer "R" responses were made during the recognition test by the older than the younger group, whereas there was no difference between the groups in the number of "K" responses. In addition, correlations indicated that remembering depended on executive function measures, whereas knowing did not. The hierarchical regression analyses showed that controlling for executive function, and particularly for the 2-back test, largely removed the age-related variance in remembering. These findings support the notion that executive dysfunction, and specifically updating decline, plays a central role in age-related memory loss.     

Counterfactual thinking and false belief: the role of executive function

The purpose of the current study was to examine further the relationship between counterfactual thinking and false belief (FB) as examined by Guajardo and Turley-Ames (Cognitive Development, 19 (2004) 53-80). More specifically, the current research examined the importance of working memory and inhibitory control in understanding the relationship between counterfactual thinking and FB. Participants were 3-, 4-, and 5-year-olds (N = 76). Counterfactual thinking statements generated accounted for significant variance in FB performance beyond age and language. Working memory and inhibitory control each partially mediated the relationship between counterfactual thinking and FB performance. The maturation of executive functioning skills is important in children’s developing understanding of counterfactual reasoning and FB.     

Demographic and familial predictors of early executive function development: Contribution of a person-centered perspective

Executive function (EF) skills are integral components of young children’s growing competence, but little is known about the role of early family context and experiences in their development. We examined how demographic and familial risks during infancy predicted EF competence at 36 months of age in a large, predominantly low-income sample of nonurban families from Pennsylvania and North Carolina in the United States. Using latent class analysis, six ecological risk profiles best captured the diverse experiences of these families. Profiles with various combinations of family structure, income, and psychosocial risks were differentially related to EF. Much of the influence of early risks on later EF appears to be transmitted through quality of parent-child interactions during infancy. Findings suggest that early family environments may prove to be especially fruitful contexts for the promotion of EF development.     

Exergaming immediately enhances children's executive function

The current study examined an important aspect of experience--physical activity--that may contribute to children's executive function. The design attempted to tease apart 2 important aspects of children's exercise by examining the separate and combined effects of acute physical activity and cognitive engagement on an aspect of children's executive functioning. In a 2 × 2 within-subject experimental design, children (N = 33, 6 to 10 years old) completed activities that varied systematically in both physical activity (physically active video games versus sedentary video activities) and cognitive engagement (challenging and interactive video games versus repetitive video activities). Cognitive functioning, including executive function, was assessed after each activity by a modified flanker task (Rueda et al., 2004). Whereas cognitive engagement had no effect on any aspect of task performance, physical activity (i.e., exergaming) enhanced children's speed to resolve interference from conflicting visuospatial stimuli. Age comparisons indicated improvements with age in the accuracy of resolving interference and in overall response time. The results extend past research by showing more precisely how physical activity influences executive function and how this effect differs from the improvements that occur with development.     

Antidepressive behaviour: A preliminary report

Outside the psychological literature it is common knowledge that when people feel depressed they ordinarily try to do something about it. In the clinical literature, this commonplace fact is in danger of being forgotten. Using an empirically-derived checklist of activities consensually identified as being ‘the thing to do when feeling depressed’, the present study examines (1) the distribution of reported antidepressive behaviour (ADB) in a group consisting of depressed and non-depressed psychiatric patients and normals and (2) the relationship between an individual's sex, personality (locus of control), and patient status and (a) the amount of ADB he reports and (b) how much of it he regards as helpful. All Ss reported some ADB but not all reported any that was helpful. In an analysis of variance, no main effects of sex, personality or patient status were found, but sex interacting with personality was significantly related both to the overall amount of ADB reported and to the amount found helpful. The findings have implications for the sorts of concepts that a theoretical formulation of ADB will require as well as for the ways in which clinicians conceptualize depressed patients.