Executive functioning and memory as potential mediators of the episodic feeling-of-knowing accuracy

The study focused on the cognitive determinants of the accuracy of feeling-of-knowing (FOK) judgments made on episodic memory information. An individual differences approach was used on a sample of healthy older adults assessed on an episodic FOK task and on several neuropsychological measures. At a global level of analysis of FOK accuracy, the contributions of four general cognitive processes--episodic memory, executive functioning, fluid intelligence and processing speed--were examined concurrently. Stepwise regression analyses showed that executive functioning accounted for the major part of variance on FOK accuracy, followed by a significant contribution of episodic memory. After controlling for executive and memory involvement, fluid intelligence and processing speed no longer accounted for significant variance. At a more detailed level of analysis of FOK accuracy, the contributions of three specific executive processes--shifting, updating and inhibition--were assessed. The results revealed shifting function as the primary executive process engaged in the production of accurate FOK judgments in episodic memory. Some hypotheses are put forward to better understand the central role of executive functioning in the production of accurate FOK judgments.     

Latina breast cancer survivors' lived experiences: diagnosis, treatment, and beyond

Latina breast cancer survivors are not benefiting from advances in psychosocial interventions. Despite their greater breast cancer burden, there is a dearth of information about this population. This qualitative study examined the experiences of 18 immigrant Latina breast cancer survivors along the survivorship continuum, from diagnosis to long-term survivorship. The authors conducted separate focus groups with women in the acute, reentry, and long-term survivorship stages. Through grounded theory analysis, the authors uncovered 5 themes of experience: perceptions of psychological well-being, impact of diagnosis, impact of treatment, need for social support, and development of new attitudes. Some themes were applicable across all survivorship stages, whereas others were more salient at a particular stage. Within themes, the authors identified experiences reported in the general literature (i.e., the debilitating effect of chemotherapy) and distinct cultural experiences (i.e., fear that a cancer diagnosis leads to certain death). Results suggest that treatments tailored for each survivorship stage are more likely to be effective than generic interventions. These findings have the potential to lessen health disparities in utilization of psychosocial treatments by Latina breast cancer survivors.     

Ethical implications of implantable radiofrequency identification (RFID) tags in humans

This article reviews the use of implantable radiofrequency identification (RFID) tags in humans, focusing on the VeriChip (VeriChip Corporation, Delray Beach, FL) and the associated VeriMed patient identification system. In addition, various nonmedical applications for implanted RFID tags in humans have been proposed. The technology offers important health and nonhealth benefits, but raises ethical concerns, including privacy and the potential for coercive implantation of RFID tags in individuals. A national discussion is needed to identify the limits of acceptable use of implantable RFID tags in humans before their use becomes widespread and it becomes too late to prevent misuse of this useful but ethically problematic technology.     

A modified procedure for parallel analysis of ordered categorical data

Parallel analysis has been well documented to be an effective and accurate method for determining the number of factors to retain in exploratory factor analysis. The O'Connor (2000) procedure for parallel analysis has many benefits and is widely applied, yet it has a few shortcomings in dealing with missing data and ordinal variables. To address these technical issues, we adapted and modified the O'Connor procedure to provide an alternative method that better approximates the ordinal data by factoring in the frequency distributions of the variables (e.g., the number of response categories and the frequency of each response category per variable). The theoretical and practical differences between the modified procedure and the O'Connor procedure are discussed. The SAS syntax for implementing this modified procedure is also provided.     

ARE ALL LATINAS THE SAME? PERCEIVED BREAST CANCER SCREENING BARRIERS AND FACILITATIVE CONDITIONS

In this article, we examine perceived breast cancer screening barriers and facilitative conditions for immigrant women from Mexico, Puerto Rico, Cuba, El Salvador, and South America ( N = 58). Focus groups conducted separately with women of each ancestry were analyzed using grounded theory methods. Identified barriers comprise secrecy, lack of information, embarrassment, fear, and distrust of health care providers. Perceived facilitative conditions include knowing the importance of early detection and noticing a symptom. We compare and contrast findings across ancestries and discuss how psychosocial and cultural factors could be better integrated into early detection programs. The women's high screening rates also suggest that breast cancer screening can be facilitated in this population by addressing institutional factors (e.g., access to health care, transportation).     

Manifest values of eminent psychologists: A content analysis of their obituaries

Obituaries published in theAmerican Psychologist (from January 1979 to December 1990,N=161) were content analyzed to create a modal demographic profile of the deceased and a ranking of the most frequently occurring value themes. Virtually all of the eminent psychologists were highly productive academicians and researchers. Typically, they were also actively involved in other professional arenas (e.g., administration, service). The majority were male (87%), white (99%), and born in the United States (86%). Ninety-seven percent had obtained Ph.D.’s, most frequently from Columbia University (16%), Harvard (11%), and Chicago (6%). Median age at death was 76. The most frequently occurring value themes written about the deceased were that they were independent-minded (67%), a good friend (61%), hard-working (53%), a good teacher/mentor (51%), and a beloved family member (35%). The implications of these data are discussed.     

The effect of lightness contrast on the colored Müller-Lyer illusion

Two subjects estimated the length of the central line in red-and blue Müller-Lyer figures that were viewed both foveally and parafoveally. The illusion figures were defined by either lightness and hue differences between figure and ground or by a hue difference alone. For both subjects, the figures defined solely by hue produced larger illusions. Since depth-cue scaling and other cognitive factors did not cause the enlargement, it was concluded that the robust, hue-produced illusions resulted from contour interactions generated within parvocellular channels that are specialized for coding color.     

Effect of changes in fin-length on apparent shaft-length and depth in the Müller-Lyer illusion.

Müller-Lyer figures with outgoing fins were back illuminated and apparent shaft-length and depth were both judged by 20 undergraduates. With the angle between the fins constant, progressive increases in fin-length produced first an increase in the apparent shaft-length and then a decrease. Changes in fin-length, however, had no significant effect on apparent depth. These data were interpreted as inconsistent with an account of the Müller-Lyer illusion in terms of perspective theory, since the latter predicts systematic changes in perceived shaft-length to be associated with systematic changes in perceived depth.