Increased Proportion of Farm Animal Names Generated by Patients with Alzheimer's Disease: What Does it Mean?

Binetti et al. (1995) reported that patients with Alzheimer's disease (AD) produced fewer semantic clusters than controls on the Animals Fluency task; of the clusters produced, 80% involved farm animals for the patients with AD compared to 40% for controls. In the present study we replicated the finding of Binetti et al.; however, the differential distribution of animal names by subcategory for the patients and controls could be accounted for by differences in the overall output and by assuming that word generation was strictly determined by prototypicality of the animal names. Thus, the increased proportion of farm animal names produced by patients with AD can be accounted for simply by postulating impaired access to semantic memory rather than degraded representations, the idea favored by Binetti et al.     

Cognitive Function in Parkinson's Disease: Association with Anxiety but Not Depression

To reexamine the relationships of depression, anxiety and cognitive impairment in Parkinson's disease (PD), 27 patients with idiopathic PD received two measures of depression, the State-Trait Anxiety Inventory, and the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). Contrary to some earlier studies, measures of depression, even those that separated mood from somatic symptoms, were not correlated with any measure of cognitive performance. By contrast, measures of anxiety were signifiantly and negatively correlated with all RBANS indexes. Because anxiety and depression are partially overlapping psychiatric disorders, inconsistent reports concerning the relationship of depression and cognition in PD may have arisen because different studies included varying proportions of depressed patients who were also highly anxious.     

Monitoring the Changing Status of Semantic Memory in Alzheimer's Disease: An Evaluation of Several Process Measures

The deficits in generating correct words on verbal fluency tasks exhibited by patients with Alzheimer's disease (AD) are accompanied by fewer switching responses, smaller phonemic and semantic cluster sizes, and greater than normal percentages of errors and category labels. On category fluency tasks, patients generate a greater proportion of words that are prototypical of their semantic class. To determine whether any of these supplementary measures of verbal fluency performance might be useful in revealing processes involved in the decline of semantic memory in AD, we studied 219 patients with AD and 115 elderly control participants longitudinally. Previously reported group differences between patients and controls were replicated, but changes in average cluster size, error rates, and prototypicality were not related to changes in overall severity of dementia and test-retest stability was only modest. The change in the percentage of labels generated on the Supermarket task was related to changes in dementia severity, but test-retest stability on this measure was quite low. All of these process measures appear to reflect only the current status of the patient's attention to the task and access to semantic knowledge, but they do not forecast future performance. The numbers of switching responses on the fluency tasks were sensitive to differences between clinically deteriorated and clinically stable patients and showed fairly high test-retest stability. However, the number of switching responses is so highly correlated with the number of correct words that it contributes little to the understanding of the processes involved in the progressive decline in performance on fluency tasks by patients with AD.     

Pictorial superiority effects in oldest-old people

We examined memory for pictures and words in middle-age (45–59 years), young-old (60–74 years), old-old (75–89 years), and the oldest-old adults (90–97 years) in the Louisiana Healthy Aging Study. Stimulus items were presented and retention was tested in a blocked order where half of the participants studied 16 simple line drawings and the other half studied matching words during acquisition. Free recall and recognition followed. In the next acquisition/test block a new set of items was used where the stimulus format was changed relative to the first block. Results yielded pictorial superiority effects in both retention measures for all age groups. Follow-up analyses of clustering in free recall revealed that a greater number of categories were accessed (which reflects participants’ retrieval plan) and more items were recalled per category (which reflects participants’ encoding strategy) when pictures served as stimuli compared to words. Cognitive status and working memory span were correlated with picture and word recall. Regression analyses confirmed that these individual difference variables accounted for significant age-related variance in recall. These data strongly suggest that the oldest-old can utilise nonverbal memory codes to support long-term retention as effectively as do younger adults.     

Examining the Relationship between Work Attitudes and Propensity to Leave among Expatriate Salespeople

The study employs literatures addressing turnover of employees in general, turnover of salespeople, and variables specific to expatriate managers to examine turnover of expatriate salespeople. Individual, job, and organizational variables are used as predictors of propensity to leave. The research suggests that several variables influence propensity to leave of expatriates: met expectations, participation, job satisfaction, and organizational commitment. The research also suggests that organizations need to establish clear expectations concerning the demands of the overseas sales job and allow salespeople to understand the parameters of employment.     

The effects of anger management and social contact on risk of myocardial infarction in type as and type bs

Abstract

The risk of myocardial infarction (MI) associated with Type A behaviour, anger management and social contact was examined using a retrospective case-control design. Binary multiple regression analyses were used to compare 206 male and 67 female MI cases with 454 male and 316 female controls. To examine the potential moderating role of sex and Type A behaviour, moderated and subgroup regressions were run. Type A behaviour was significantly more prevalent in cases than controls. MI risk was further increased in males who combined Type A behaviour and aggressive expression of anger. In females MI risk was associated with the combination of Type A behaviour and not expressing anger. In addition female cases were significantly less likely than controls to discuss their anger, and reported fewer available social contacts. Discussion of results includes consideration of the problems generated by the retrospective case-control design.     

Reduced Verbal Memory Retention is Unrelated to Sleep Disturbance During Pregnancy

This study investigated episodic and procedural memory retention in early and late pregnancy and whether memory retention was related to sleep disruption. Twenty‐six women in the third trimester of pregnancy, 20 women in the first trimester of pregnancy, and 24 non‐pregnant controls were administered a battery of verbal and visual episodic memory tasks and two procedural memory tasks before undergoing an overnight sleep study. Memory retention was assessed the following morning. Results indicated that as compared with controls, both pregnant groups had reduced retention in verbal episodic memory but were unimpaired on visual and procedural memory tasks. The pregnant women also demonstrated significant disruption of sleep patterns. Reduced verbal memory retention during pregnancy was not attributable to any measure of sleep; however, small correlations between some indices of sleep and memory do not allow full dismissal of the sleep‐dependent memory consolidation hypothesis.     

Be Fair,Your Employees Are Watching: A Relational Response Model of External Third‐Party Justice

There is growing theoretical recognition in the organizational justice literature that an organization's treatment of external parties (such as patients, community members, customers, and the general public) shapes its own employees’ attitudes and behavior toward it. However, the emerging third‐party justice literature has an inward focus, emphasizing perceptions of the treatment of other insiders (e.g., coworkers or team members). This inward focus overlooks meaningful “outward” employee concerns relating to how organizations treat external parties. We propose a relational response model to advance the third‐party justice literature asserting that the organization's fair treatment of external parties sends important relational signals to employees that shape their social exchange perceptions toward their employer. Supporting this proposition, in two multisource studies in separate healthcare organizations we found that patient‐directed justice had indirect effects on supervisory cooperative behavior ratings through organizational trust and organizational identification.