A comparative assessment of the factor structures and psychometric properties of the GHQ-12 and the GHQ-20 based on data from a Finnish population-based sample

The General Health Questionnaire (GHQ) is a self-report questionnaire designed to identify psychological distress. Psychometric properties of two versions of GHQ-12 and GHQ-20 were assessed in a large population-based sample of Finnish twins, ages 22 to 27 (n= 4580). Participants were randomized into two subgroups, namely Twin1 (n= 2294) and Twin2 (n= 2286). The GHQ-12 data were assessed using Confirmatory Factor Analysis (CFA). The factor structure of the GHQ-20 was first assessed with Exploratory Factor Analysis (EFA) in the Twin1 dataset, and the results obtained were then subjected to CFA in Twin1 and Twin2 datasets. The CFA of the GHQ-12 indicated that the best fit and the simplest solution were provided by the three-factor solution in both subpopulations. Analyses of the GHQ-20 suggested that the four-factor structure was superior to the three-factor model. This result is also theoretically justifiable. Compared to the 12-item version, GHQ-20 provides additional fourth factor of anhedonia, suggesting some discriminative power.     

Quantifiers and Congruence Closure

We prove some results about the limitations of the expressive power of quantifiers on finite structures. We define the concept of a bounded quantifier and prove that every relativizing quantifier which is bounded is already first-order definable (Theorem 3.8). We weaken the concept of congruence closed (see [6]) to weakly congruence closed by restricting to congruence relations where all classes have the same size. Adapting the concept of a thin quantifier (Caicedo [1]) to the framework of finite structures, we define the concept of a meager quantifier. We show that no proper extension of first-order logic by means of meager quantifiers is weakly congruence closed (Theorem 4.9). We prove the failure of the full congruence closure property for logics which extend first-order logic by means of meager quantifiers, arbitrary monadic quantifiers, and the Härtig quantifier (Theorem 6.1).     

Aesthetics and the Dream of Objectivity: Notes from Set Theory

In this paper, we consider various ways in which aesthetic value bears on, if not serves as evidence for, the truth of independent statements in set theory.

... the aesthetic issue, which in practice will also for me be the decisive factor—John von Neumann, letter to Carnap, 1931     

Social predictors of unsuccessful entrance into the labour market—A socialization process perspective

Social determinants over the life course, including childhood family characteristics, were studied in predicting unsuccessful entrance into the labour market at the age of 31 years. Among men, unsuccessful entrance into the labour market was predicted prospectively by the mother's receptive attitude towards receiving social aid and contentment with existing circumstances in early childhood, the family's low social status in adolescence, and low vocational education in early adulthood. Among women, it was predicted prospectively by low school attainment in adolescence and low vocational education in early adulthood, and associated cross-sectionally with having more than two children. Among both genders having a low income, poor subjective health and poor life satisfaction, as well as receiving little social support associated with unsuccessful entrance into the labour market. The results emphasize the role of childhood social factors in preventing long-term unemployment in young adulthood.     

International comparison of Cloninger’s temperament dimensions

Cloninger’s Tridimensional Personality Questionnaire (TPQ) and Temperament and Character Inventory (TCI) have been developed to measure the following temperament dimensions: novelty seeking (NS), harm avoidance (HA), reward dependence (RD) and persistence (P). We used our previous Finnish normative study of the TPQ and TCI (Miettunen et al., 2004) to estimate correction coefficients to convert TPQ scales to comparable TCI scales. Our aim was to compare these corrected temperament dimension scores across 20 countries adjusting for study sample differences in age and gender. In all, some variations were found in these temperament scores between countries. Differences were especially apparent between the Asian and the Western countries. By far the lowest mean score of the RD was in Japan (11.2 vs. 15.4 for other countries; effect size Cohen’s d = −5.74; z-test p < 0.001) and the highest mean score in P was in USA (5.5 vs. 4.4; d = 4.24, p = 0.001). Some of the findings could be explained by sample differences (e.g. age and education); while some may reflect real differences in the ways which personality is related to cultural factors, such as individualism/collectivism. These differences should be considered when interpreting studies with data on TPQ/TCI from different countries.     

Job insecurity in Finland: Antecedents and consequences

Abstract

Trends towards more unpredictable and flexible labour markets are often presumed to fuel feelings of job insecurity among employees, especially the threat of losing one's job. The aim of the study was to examine the prevalence, antecedents, and consequences of job insecurity in a representative sample of Finnish wage and salary earners (N = 3503) gathered in 1990. One out of ten respondents felt the threat of lay-off, dismissal, or unemployment. According to hierarchical regression analysis, perceived job insecurity was best explained by positional factors, especially earlier unemployment experiences and the temporary nature of the employment relationship. The role of demographic factors predicting job insecurity was strikingly minor. Variance and regression analysis confirmed the negative effects of perceived insecurity on work and health behaviour found in previous studies. Social support was found to have a light moderating effect in alleviating the negative effects of job insecurity. Thus, job insecurity was a psychological stressor with adverse effects for a sizeable proportion of the employees.     

Psychometric deviance measured by MMPI in adoptees at high risk for schizophrenia and their adoptive controls

Psychometric deviance in personality traits as assessed by the Minnesota Multiphasic Personality Inventory (MMPI; Dahlstrom, Welsh, & Dahlstrom, 1982) was compared between adopted-away, high-risk (HR) offspring of schizophrenic biologic mothers and low-risk (LR) controls. A subsample of the Finnish Adoptive Family Study (Tienari et al., 2000) included 60 HR adoptees and 76 LR control adoptees who were tested by the MMPI before the onset of any psychiatric disorder at the mean age of 24 years. The HR group was found to be distinguishable based on deviant scores on the scales HOS and HYP, indicating emotional unresponsiveness, restricted affectivity, and decreased energy. These may also be considered possible premorbid and prodromal signs of future schizophrenia among the HR adoptees.     

Substance and style in socially desirable responding

The purpose of the present series of studies was to evaluate whether Paulhus's (1991) Self-Deceptive Enhancement (SDE) and Communion Management (CM) socially desirable responding (SDR) scales should be interpreted as response set measures, response style measures, or measures of substantive individual differences in personality. In Study 1 (N=57) and Study 2 (N=62), army officer trainees were tested as applicants to their program and retested as incumbents 3 years later. Although participants generally responded to the situation by showing higher SDR scores in the applicant conditions, they also showed considerable rank-order stability across time. In Study 3 (N=70), self-reports on both SDR scales were corroborated by spouse reports, and, furthermore, SDE scores correlated with spouse reports of low Neuroticism and high Extraversion. Our data are interpreted as suggesting that both the CM and SDE scales are, in some varying amounts, measures of response set, response style, and substantive individual differences in personality. Implications of our findings for personality assessment and personnel selection are discussed.     

Dependence and Independence

We introduce an atomic formula ${\vec{y} \bot_{\vec{x}}\vec{z}}$ intuitively saying that the variables ${\vec{y}}$ are independent from the variables ${\vec{z}}$ if the variables ${\vec{x}}$ are kept constant. We contrast this with dependence logic ${\mathcal{D}}$ based on the atomic formula = ${(\vec{x}, \vec{y})}$ , actually equivalent to ${\vec{y} \bot_{\vec{x}}\vec{y}}$ , saying that the variables ${\vec{y}}$ are totally determined by the variables ${\vec{x}}$ . We show that ${\vec{y} \bot_{\vec{x}}\vec{z}}$ gives rise to a natural logic capable of formalizing basic intuitions about independence and dependence. We show that ${\vec{y} \bot_{\vec{x}}\vec{z}}$ can be used to give partially ordered quantifiers and IF-logic an alternative interpretation without some of the shortcomings related to so called signaling that interpretations using = ${(\vec{x}, \vec{y})}$ have.