Sleep duration and health correlates among university students in 26 countries

The aim of this study was to investigate sleep duration and its health correlates in university students from 26 low-, middle- and high-income countries. Using anonymous questionnaires and anthropometric measurements, data were collected from 19417 undergraduate university students (mean age 20.8, SD = 2.8) from 27 universities from 26 countries across Asia, Africa and the Americas. Results indicate that the average number of self-reported hours of sleep was 7.07 (CI = 7.04–7.09), with the prevalence of reporting ≤6, 7–8, and ≥9?h sleep duration of 39.2, 46.9, and 13.9%, respectively. Multinomial logistic regression found that sociodemographic variables, health risk behaviour and health status variables were found to be associated with short and long sleep duration.     

Intensity and prevalence of current fears among Iranian university students

The intensity and prevalence of fears were assessed in Iranian university students by applying the Fear Survey Schedule for Children, II. Analysis indicated that the intensity and prevalence of fears varied by students' sex, field of study, and birthplace. Results are discussed in relation to previous findings, and a few recommendations together with some educational implications were noted.     

Career adaptability and its relation to self-regulation,career construction,and academic engagement among Spanish university students

This study analyzed the psychometric properties of the Career Adapt-Abilities Scale (CAAS) in a Spanish speaking sample and then its relationships with adaptive readiness (i.e., self-regulation), career construction and adapting responses (i.e., vocational coping behaviors), and adaptation results (academic engagement, burnout, and vocational identity). The measures were completed by 577 Spanish university students. The psychometric properties of the newly translated CAAS Spanish Form included internal consistency values ranging from good to excellent for the total score and for the subscales. The results obtained through the confirmatory factor analysis verified the presence of the four CAAS dimensions: concern, control, curiosity, and confidence, which were the same factors observed in other international studies with other languages. The significant correlations obtained between the CAAS and the adaptive readiness, adapting, and adaptation measures confirmed the validity of the CAAS scores. In addition, this study tested a theoretical model of mediation between variables, adding further support to the distinction between the three dimensions leading to adaptation.     

Work values: Some demographic and cultural correlates

Employment‐related values were recorded at two levels of scope: perceived importance of the work‐role and of particular job characteristics. Associations with workers' sex, age, employment status, and education level were significant. Work values also differed among countries with a different cultural heritage – historically catholic, historically communist, or historically protestant. Implications for research into job content and reactions and for evaluative judgments in the operation of traits, motives, and attitudes were considered.     

Biomarkers, health, lifestyle, and demographic variables as correlates of reaction time performance in early, middle, and late adulthood

We aimed to identify demographic, health, and biomarker correlates of reaction time performance and to determine whether biomarkers explained age differences in reaction time performance. The sample comprised three representative cohorts aged 20-24, 40-44, and 60-64 years, including a total of 7,485 participants. Reaction time measures of intraindividual variability and latency were used. The measure of intraindividual variability used was independent of mean reaction time. Older adults were more variable than younger adults in choice reaction time performance but not simple reaction time performance. The most important correlates of reaction time performance after gender and education were biological markers such as forced expiratory volume at one second, grip strength, and vision. Few measures of physical or mental health or lifestyle were associated with poorer performance on reaction time measures. Biomarkers explained the majority of age-related variance in simple reaction time and a large proportion of variance in choice reaction time. We conclude that for the ages studied, biomarkers are more important than health factors for explaining age differences in reaction time performance.     

A developmental approach examining social and personal correlates in relation to alcohol use over time

This study's aim was to determine the interrelationship of personality, peer, and parental domains and alcohol use over time during preadolescence and adolescence. Children and teenagers (N = 510; 9 to 18 years old) and their mothers were separately interviewed at two points in time, two years apart. The results were evaluated using multiple hierarchical regression analysis. In preadolescence, personality factors appear to serve as mediators for family and peer factors in relation to alcohol use over time whereas, in adolescence, peer and personality factors serve as mediators for family factors. Peer factors apparently become more important between preadolescence and adolescence, but parental factors do not seem to lose their importance. The theoretical implications and practical applications for alcohol education and alcohol abuse prevention programs are discussed.     

Loneliness: Its correlates and associations with health risk behaviours among university students in 25 countries

The aim of this cross-national study was to assess factors associated with loneliness and to determine the degree to which loneliness affects health status and risk behaviours among university students. Data were collected from 17 886 university students in 25 countries (females = 58.6%, from Africa = 33.5%). In multivariable logistic regression, loneliness was predicted by lower family wealth, living in a low or lower middle income country, and antecedent childhood. Moreover, psychosocial factors of perceived lack of control, low organised religious activity, high non-organised religious activity, high intrinsic religiosity, and low social support were associated with loneliness. Lonely students were also likely to self-report poor subjective health status, sleeping problems, short sleep duration, tobacco use, heavy internet use, aggressive behaviour, injury, and sexual risk behaviour. University students with loneliness may be assisted by preventive health interventions aimed at enhancing their subjective well-being.     

Assessment of nuclear anxiety among American students: stability over time, secular trends, and emotional correlates

Studies of reactions and attitudes toward nuclear war have progressed from the use of anecdotal evidence to multi-item psychological measures. Additional psychometric data and substantive results of the Nuclear Attitudes Questionnaire (NAQ; Newcomb, 1986) are reported here. Data from three independent samples of students from the United States collected in 1984, 1986, and 1987 were compared and contrasted. The 1986 data were obtained immediately following the Chernobyl nuclear power plant accident. Test-retest reliability of the NAQ items and subscales was quite high and comparable among samples and established the across-time stability of the measure. There were several secular trends across years on items and subscales, indicating some increased concern about nuclear power (particularly in 1986), but also a general increase in nuclear concerns, fears, and anxiety. Anticipated sex differences were found on many of the NAQ items and subscales. Correlations between the NAQ subscales and the nine SCL-90-R scales (Derogatis, 1977) were consistent for the 1986 and 1987 samples. In latent variable analyses, a general factor of Emotional Distress was significantly correlated with a general factor of Nuclear Anxiety, as well as specifically with nuclear concern and fear for the future.     

Type A behavior and its relation to personality variables in Swedish male and female university students

A questionnaire based on the Jenkins Activity Survey (JAS), given to 181 male and 280 female Swedish university students, showed that females had significantly higher Type A scores than males. Three factors were extracted by factor analysis, two of which, "speed and impatience" and "hard-driving", corresponded to two of the factors obtained by JAS in an American population of employed men (Zyzanski & Jenkins, 1970). The third factor was tentatively termed "engagement-involvement". Twelve male and 12 female subjects from opposite ends of the distribution were compared in terms of 22 personality variables measured by questionnaires. It was found that Type A subjects of both sexes scored higher on scales measuring anxiety-proneness, aggression-hostility, extraversion and neuroticism.     

Ryff's psychological well-being inventory: factorial structure and life history correlates among Japanese university students

The theoretical model of psychological well-being that encompasses six domains (self-acceptance, positive relations with others, autonomy, environmental mastery, purpose in life, and personal growth) was tested with a Japanese university student population (N = 574) using a Japanese translation of Ryff's 1989 Psychological Well-being Inventory. A factor structure similar to Ryff's original model emerged. Both depression and anxiety correlated only moderately with scores on some subscales of the inventory, suggesting the relative independence of these dimensions of psychological well-being and negative affectivity. With negative affectivity controlled, some early life experiences were significantly linked with psychological well-being: relationships with romantic partners were linked with greater autonomy and experiences which enhance self-esteem were liked with greater personal growth. Careful psychometric work on the Japanese version is required to use the scale; then a replication and extension of the present study would be feasible.     

The relation between well-being, impostor feelings, and gender role orientation among Canadian university students

A theoretical model of well-being identifies 6 key components that have been examined primarily in older adults (e.g., C. D. Ryff, 1989c, 1991): self-acceptance, positive relations with others, autonomy, environmental mastery, purpose in life, and personal growth (C. D. Ryff, 1995; C. D. Ryff & C. L. M. Keyes, 1995; C. D. Ryff & B. Singer, 1996). The authors examined them in a sample of 379 Canadian university students to determine how well-being was correlated with endorsement of stereotypic gender roles and with the impostor phenomenon. The participants completed Ryff's Scales of Psychological Well-Being (Ryff, personal communication, March 1996), the Clance Impostor Phenomenon Scale (P. R. Clance & M. A. O'Toole, 1988), and the Extended Personal Attributes Questionnaire (J. T. Spence, R. L. Helmreich, & C. K. Holahan, 1979). The results supported the hypotheses that (a) people with higher scores for expressive traits score higher for well-being stemming from positive relations with others, (b) people with higher scores for instrumental traits score higher for well-being related to feelings of autonomy, (c) people with higher scores for impostor feelings (and lower scores for ability confidence) score lower for self-acceptance and (d) for environmental mastery.     

What it takes: Ability,demographic, bright and dark side trait correlates of years to promotion

Over 6000 adult managers attending an assessment centre completed a battery of tests including a ‘bright side’ personality trait measure (NEO-PI-R); a ‘dark side’/disorders measure (HDS), an ability test (GMA) and also specified, in detail, how long it had been before they were promoted to a managerial role, and also, where appropriate to a senior managerial role. Correlation analyses showed shorter times to promotion were associated with low Neuroticism, high Extraversion, high Conscientiousness, and high Intelligence, as well as being high on Bold and Colourful, but low on Cautious, Reserved and Leisurely “dark side” traits. Regressions showed the higher-order, dark side factors named “Moving against” people positively, and “Away from” and “Moving toward” people negatively, were associated with promotions. Implications for the selection and management of people, as well as limitations of this study are considered.