Possible relationship of elderly suicide rates with unemployment in society: a cross-national study

Analyses of individual and aggregated data have yielded an association between suicide and unemployment, particularly for men in younger age groups. Examination of the relationship of elderly suicide rates with measures of unemployment in a cross-national study of 27 countries did not produce any statistically significant association between these two variables. Also, the magnitude of the actual correlations was small. One reason for low magnitude of correlations may be better welfare systems in the studied countries which mainly reported medium and high income.     

Association of suicide rates of elderly persons with fertility rates

A negative correlation between societal suicide rates and social integration has been reported, but rarely specifically examined for suicide rates of the elderly although suicide rates of elderly persons are among the highest. The associations of suicide rates of elderly persons and fertility rates for 81 countries were examined using data from the World Health Organisation and United Nations. Fertility rates were considered a proxy measure for social integration. Multiple regression analysis indicated that suicide rates for males and females in the age bands 65-74 years and 75+ years were independently (negative) correlated with fertility rates. Fertility rates, as a measure of social integration, may interact with, modify and mediate the effect of cultural factors on suicide rates of elderly persons.     

The effect of childhood bilingualism on episodic and semantic memory tasks

Kormi-Nouri, Moniri and Nilsson (2003) demonstrated that Swedish-Persian bilingual children recalled at a higher level than Swedish monolingual children, when they were tested using Swedish materials. The present study was designed to examine the bilingual advantage of children who use different languages in their everyday life but have the same cultural background and live in their communities in the same way as monolingual children. In four experiments, 488 monolingual and bilingual children were compared with regard to episodic and semantic memory tasks. In experiments 1 and 2 there were 144 boys and 144 girls in three school groups (aged 9-10 years, 13-14 years and 16-17 years) and in three language groups (Persian monolingual, Turkish-Persian bilingual, and Kurdish-Persian bilingual). In experiments 3 and 4, there were 200 male students in two school groups (aged 9-10 years and 16-17 years) and in two language groups (Persian monolingual and Turkish-Persian bilingual). In the episodic memory task, children learned sentences (experiments 1-3) and words (Experiment 4). Letter and category fluency tests were used as measures of semantic memory. To change cognitive demands in memory tasks, in Experiment 1, the integration of nouns and verbs within sentences was manipulated by the level of association between verb and noun in each sentence. At retrieval, a recognition test was used. In experiments 2 and 3, the organization between sentences was manipulated at encoding in Experiment 2 and at both encoding and retrieval in Experiment 3 through the use of categories among the objects. At retrieval, free recall or cued recall tests were employed. In Experiment 4, the bilingual children were tested with regard to both their first and their second language. In all four experiments, a positive effect of bilingualism was found on episodic and semantic memory tasks; the effect was more pronounced for older than younger children. The bilingual advantage was not affected by changing cognitive demands or by using first/second language in memory tasks. The present findings support the cross-language interactivity hypothesis of bilingual advantage.     

The Impact of Individual and Interpersonal Factors on Perceived News Media Bias

A large percentage of the public believes that the news media are biased, and the majority of these individuals consider the direction of bias to be against their own viewpoints. Past research has examined how individual factors such as strength of partisanship or extent of political involvement heighten bias perceptions, but little attention has been paid to interpersonal factors such as the ideological similarity or dissimilarity of personal communication networks. Results of a national survey show that perceptions of media bias were unrelated to the overall amount of discussion but were positively related to conversations with ideologically like–minded individuals. Moreover, the impact of conversations with similar others was stronger among Republicans than among Democrats, a finding consistent with recent work on news self–coverage of media bias claims.     

Emotional transfer in goal systems

Five experimental studies explored the phenomenon of affective transfer in goal systems. We find that affect associated with goal attainment may be transferred to means cognitively associated with such goal-events, and that factors affecting the dimensions of transfer include the magnitude of affect invested in the goal, the quality of invested affect and the strength of association between a given means and the goal-event. Accordingly, the transfer mechanism was shown to impact the magnitude of affect experienced in regard to the means in question, as well as its kind (involving, e.g., promotion-type affect or prevention-type affect), and was shown to influence the interpersonal feelings toward others perceived as helpful to the attainment of various goals.     

Designing Mobile Systems in Highly Dynamic Scenarios: The WORKPAD Methodology

The design of interactive systems to be used in mobile and pervasive scenarios, such as emergency management, requires novel methodologies which combine user-centred design approaches and software engineering approaches tailored for distributed architectures. In this paper, the methodology adopted in a successful research project is presented together with a case study.

Y haplogroups and aggressive behavior in a Pakistani ethnic group

Studies show that personality dimensions such as aggression are influenced by genetic factors and that allelic variants located on the Y chromosome influence such behavior. We investigated polymorphisms on the male-specific region of the human Y chromosome in 156 unrelated males from the same ethnic background, who were administered the Punjabi translation of the Buss and Perry Aggression Questionnaire that measures four aspects that constitute aggressive behavior, i.e. physical aggression, verbal aggression, anger, and hostility. A value of .85 for Cronbach's coefficient alpha indicates considerable internal consistency and suggests that the psychometric properties of the aggression questionnaire can be adapted for the Pakistani population. A mean score+/-SD of 69.70+/-19.95 was obtained for the questionnaire. Each individual was genotyped following a phylogenetic hierarchical approach to define evolutionary Y haplogroups. Five Y haplogroups that are commonly found in Eurasia and Pakistan comprised 87% (n=136) of the population sample, with one haplogroup, R1a1, constituting 55% of the sampled population. A comparison of the total and four subscale mean scores across the five common Y haplogroups that were present at a frequency > or =3% in this ethnic group revealed no overall significant differences. However, effect-size comparisons allowed us to detect an association of the haplogroups R2 (Cohen's d statistic=.448-.732) and R1a1 (d=.107-.448) with lower self-reported aggression mean scores in this population.     

Incidental retrieval processes influence explicit test performance with data-limited cues

In two experiments, the influence of incidental retrieval processes on explicit test performance was tested. In Experiment 1, subjects studied words under four conditions (auditory-shallow, auditory-deep, visual-shallow, and visual-deep). One group of subjects received auditory and visual word-fragment completion; another group received auditory and visual word-fragment cued recall. Results indicated that changes in sensory modality between study and test reduced both recall and priming performances; levels of processing significantly affected only the cued recall test. These results indicated that incidental retrieval processes might affect explicit test performance when retrieval cues are data limited. Experiment 2 supported this conclusion by showing an effect of matching study and test modalities on explicit test performance with fragment but not with copy cues. Taken together, these results support Roediger and McDermott’s (1993) suggestion that explicit test performance is influenced by incidental retrieval processes when data-limited retrieval cues are used.     

Psychological distress, loneliness and disability in old age

With the growth in the number of older people, an increase of mental health problems might be expected. Reducing the amount of suffering and dependence due to poor mental health in old age is a priority requiring a good understanding of the determinants of psychological distress. The objectives were: (a) to measure the prevalence of psychological distress and loneliness in old men and women, living in the community, (b) to clarify the association between psychological distress, health and other explanatory variables and (c) to determine relationship between loneliness and psychological distress. We performed a cross-sectional study of 999 people aged 65+. The variables studied were psychological distress (GHQ-12) and self-reported loneliness. The prevalence of psychological distress was 20%. Illness and disability are related to psychological distress in old age; the feeling of loneliness is the single most important predictor of psychological distress, and not knowing neighbours increases the probability of depression. Attempts to improve detection and management of psychological distress in sick older people, in those who appear isolated and express loneliness should be evaluated.     

Aging and repetition priming for targets and distracters in a working memory task

A combined working memory/repetition priming task was administered to 13 young (mean age 23) and 13 elderly (mean age 69) adults. Each participant memorized a sample target face at the beginning of a trial and then determined whether each of 13 serially presented test faces matched the sample target. In each trial, both the target and one particular distracter face were repeated during the test phase. Within-trial repetition priming effects indicated the contribution of implicit memory to task performance. Response times decreased as items were tested repeatedly within a trial, but this decrement was greater for distracters than for targets. Young and older participants were equally accurate at identifying targets, but elderly were slightly less accurate for distracters. Elderly participants showed repetition priming effects for both targets and distracters, while the young showed such effects only for distracters. The results suggest that active maintenance in working memory, but not inhibition or rejection of distracters, may suppress implicit memory systems.