Cognitive aging and flight performances in general aviation pilots

ABSTRACT

Unlike professional pilots who are limited by the FAA's age rule, no age limit is defined in general aviation. Our overall goal was to examine how age-related cognitive decline impacts piloting performance and weather-related decision-making. This study relied on three components: cognitive assessment (in particular executive functioning), pilot characteristics (age and flight experience), and flight performance. The results suggest that in comparison to chronological age, cognitive assessment is a better criterion to predict the flight performance, in particular because of the inter-individual variability of aging impact on cognitive abilities and the beneficial effect of flight experience.     

Dimensions of Job Satisfaction Identified Among South African Black Middle-level Managers: A Qualitative Investigation

The aim of the present study was to identify the factors contributing to job satisfaction for black middle-level managers and to contextualise these factors in terms of Afrocentric values and South Africa's socio-political and historical background. The sample comprised eight participants (4 males and 4 females), primarily from the educational sector, selected by means of purposive sampling. Semi-structured telephonic interviews were conducted to collect data, and the Interpretative Phenomenological Analysis (IPA) was used for in-depth analysis of the participants' experiences. Social needs consistent with Ubuntu were identified as important. These included a need for effective communication, transparency, trust and tolerance in the face of cultural and work-related differences. The frustrations associated with cultural differences and language barriers were elaborated on. For the participants, professional development and recognition were related to affirmative action policies and practices as well as the socio-political background. These findings contribute to the limited research available for the particular population—an essential contribution, given the cultural diversity of the South African workforce.     

Self-efficacy,Work, and Psychological Outcomes in a Public Service Context

The study examined the prediction of psychological outcomes (conceptualized as psychological well-being and engagement) by general self-efficacy (GSE) and work context (conceptualized as job demands and job resources). The role of GSE as a moderator between work context and psychological outcomes was also examined in a cross-sectional survey of a sample of public sector employees (N = 459: males = 151, females = 273, and age ranging between 25 and 55). Multiple regression analyses showed that job demands and resources and GSE significantly predict both psychological well-being (positive affect, negative affect and satisfaction with life) and engagement (vigour and dedication). GSE moderated the relationship between work context and psychological outcomes. Work contexts characterised by a preponderance of job resources appear to facilitate both satisfaction with life and dedication.     

First-time mothers’ experiences of meaningfulness during their third trimester of pregnancy: A focus on spirituality

This study sought to gain in-depth understanding of the lived experiences of first-time mothers during their third trimester of pregnancy. The non-probability, purposive sample were Afrikaans speaking first-time mothers aged between 22 and 40 years. Data on their experiences of meaningfulness during their pregnancy were collected using the Mmogo-Method® and reflective journals. The data were thematically analyzed combining textual data and visual depictions. This group of first-time mothers expressed a very personal relationship with a Divine reality that they rely on and derive meaningfulness from their pregnancy and birthing experiences. They perceived a Divine reality as the giver of life and that they were given a responsibility to carry new life. Sense of meaningfulness during pregnancy was strongly associated with spirituality.     

An Index of Progress Towards the MDG1 in Southern Africa and the Horn of Africa

In this article we present a new proposal for measuring progress towards Millennium Development Goal (MDG) 1 to eradicate extreme poverty and hunger, applied to a group of countries particularly affected by poverty in the context of southern Africa and the Horn of Africa. Our index is novel in that it has been constructed taking into account a larger number of variables defined in the UN Millennium Declaration which are generally considered to determine countries’ levels of underdevelopment. As technique applied to the data, provided by the UN, we used the P₂ distance of Pena method and applied it to the year 2007; the last year for which data are available. This index incorporates variables that permit a ranking of the countries of southern Africa and the Horn of Africa in terms of those partial indicators. To sum up, the objective is to produce a global indicator of fulfilment of the MDG1.     

The role of phonological and executive working memory resources in simple arithmetic strategies

The current study investigated the role of the central executive and the phonological loop in arithmetic strategies to solve simple addition problems (Experiment 1) and simple subtraction problems (Experiment 2). The choice/no-choice method was used to investigate strategy execution and strategy selection independently. The central executive was involved in both retrieval and procedural strategies, but played a larger role in the latter than in the former. Active phonological processes played a role in procedural strategies only. Passive phonological resources, finally, were only needed when counting was used to solve subtraction problems. No effects of working memory load on strategy selection were observed.     

Validation of the Internet and Social Networking Experiences Questionnaire in Spanish adolescents

The aim of this paper is to validate the Internet Related Experiences Questionnaire (IREQ) with a sample of 525 participants from Compulsory Secondary Education, considering the possible addiction to the internet from both interpersonal and intrapersonal dimensions. Besides, associations between CERI scores and several variables such as sex, age as well as selfesteem were analyzed. Results show a good fit of the questionnaire through a Confirmatory Factor Analysis (CFA), where the interpersonal factor explains a higher percentage of the variance at the expense of the intrapersonal factor. Statistically significant differences between IREQ scores and age and a lineal positive association between self-esteem and possible interpersonal addiction to the internet were found. The possibility of these results to be affected by the social use of the Internet and the generalization in young people's lives is discussed. Moreover, the need of designing and implementing prevention programs for a healthy use of the internet is discussed.     

Maladaptive personality traits in adolescence: Psychometric properties of the Personality Diagnostic Questionnaire-4+

The Personality Diagnostic Questionnaire-4+ (PDQ-4+) is a self-report used for the assessment of personality disorder traits, however, its psychometric characteristics have yet to be tested in community samples of adolescents. The main goal was to analyze the psychometric properties of the PDQ-4+ scores in a large sample of non-clinical adolescents (N = 1,443; M = 15.9 years; SD = 1.2). The PDQ-4+ scores showed adequate psychometric properties. Reliability of the subscales, incorporating a Likert-type 5-point response format, ranged from .62 to .85. The study of the internal structure at item level revealed that the PDQ-4+ subscales were essentially one-dimensional. Analysis of the internal structure at the subscale level by means of exploratory factor analysis and exploratory structural equation modeling yielded a possible three-dimensional solution. The PDQ-4+ subscales correlated moderately with emotional and behavioural variables measured by the Strengths and Difficulties Questionnaire. The results have clear implications for the understanding of maladaptive personality traits in adolescents.     

The influence of word shading and word length on eye movements during reading

In three experiments rats were given short or long preexposure (4 or 10 sessions) to two compound flavours, AX and BX, according to an intermixed or a blocked schedule. Following preexposure, aversion conditioning trials were given with AX as the conditioned stimulus (CS). In Experiments 1 and 2, retardation and summation tests were then carried out to assess the inhibitory properties of B (an Espinet procedure). In Experiment 3, test trials evaluated generalization from AX to BX (the standard perceptual learning procedure). The results showed that B performed as an inhibitor of the unconditioned stimulus (US; an Espinet effect) only after long intermixed preexposure, whereas a reliable perceptual learning effect was observed both after short and after long preeexposure. The observation that B had no detectable inhibitory properties after short preexposure casts doubt on the suggestion that inhibitory learning is responsible for perceptual learning after brief exposure to AX and BX.