Introduction

Neo-Fregean logicism seeks to base mathematics on abstraction principles. But the acceptable abstraction principles are surrounded by unacceptable (indeed often paradoxical) ones. This is the “bad company problem.” In this introduction I first provide a brief historical overview of the problem. Then I outline the main responses that are currently being debated. In the course of doing so I provide summaries of the contributions to this special issue.     

The perception of flicker: Theoretical note on the relation between brightness and darkness enhancement

A reexamination of experiments on the brightness and darkness enhancement of flickering lights suggests that the mechanism responsible for the asymmetry of the effects (darkness enhancement being a stronger effect than brightness enhancement) is independent and central to the mechanism responsible for the frequency-dependent brightness and darkness variations.     

Adding a baby to the equation. married and cohabiting women's relationship satisfaction in the transition to parenthood

The trajectory of relationship satisfaction among married and cohabiting women in their transition to parenthood was compared in a potential sample of 71,504 women taking part in the Norwegian Mother and Child Cohort Study (MoBa). Prospective longitudinal data were collected in 4 waves over a 2-year period starting 6 months prebirth. Results from latent curve models suggested that married and cohabiting women experience similar negative change in relationship satisfaction during the transition to parenthood. However, cohabiting women start off and stay less satisfied throughout the transition period, suggesting the presence of a negative cohabitation effect that prevailed after controlling for various covariates. Extending investigation on the cohabitation effect to the transition to parenthood, and replicating it in a Scandinavian context, is discussed in relation to the understanding of what causes the cohabitation effect, and its clinical implications.     

The revenge of the Jinns: spirits, Salafi reform, and the continuity in change in contemporary Ethiopia

The point of departure for this article is a story about jinns taking revenge upon people who have abandoned earlier religious practices. It is a powerful account of their attempt to free themselves from a past viewed as inhabited by evil forces and about the encounter between contemporary Salafi reformism and a presumed disappearing religious universe. It serves to prove how a novel version of Islam has superseded former practices; delegitimized and categorized as belonging to the past. The story is, however, also an important source and an interesting entry-point to examine the continued relevance of past practices within processes of reform. Analyzing the story about the jinns and the trajectory of Salafi reform in Bale, this contribution demonstrates how the past remains intersected with present reformism, and how both former practices and novel impetuses are reconfigured through this process. The article pays attention to the dialectics of negotiations inherent to processes of reform and points to the manner in which the involvement of a range of different actors produces idiosyncratic results. It challenges notions of contemporary Islamic reform as something linear and fixed and argues that such processes are multifaceted and open-ended.     

Differences in cognitive control in children and adolescents with combined and inattentive subtypes of ADHD

The aim of the present study was to investigate the ability of children with attention deficit/hyperactivity disorder-combined subtype (ADHD-C) and predominantly inattentive subtype (ADHD-PI) to direct their attention and to exert cognitive control in a forced attention dichotic listening (DL) task. Twenty-nine, medication-naive participants with ADHD-C, 42 with ADHD-PI, and 40 matched healthy controls (HC) between 9 and 16 years were assessed. In the DL task, two different auditory stimuli (syllables) are presented simultaneously, one in each ear. The participants are asked to report the syllable they hear on each trial with no instruction on focus of attention or to explicitly focus attention and to report either the right- or left-ear syllable. The DL procedure is presumed to reflect different cognitive processes: perception (nonforced condition/NF), attention (forced-right condition/FR), and cognitive control (forced-left condition/FL). As expected, all three groups had normal perception and attention. The children and adolescents with ADHD-PI showed a significant right-ear advantage also during the FL condition, while the children and adolescents in the ADHD-C group showed a no-ear advantage and the HC showed a significant left-ear advantage in the FL condition. This suggests that the ADHD subtypes differ in degree of cognitive control impairment. Our results may have implications for further conceptualization, diagnostics, and treatment of ADHD subtypes.     

Personal vulnerability and work‐home interaction: The effect of job performance‐based self‐esteem on work/home conflict and facilitation

Innstrand, S. T., Langballe, E. M., Espnes, G. A., Aasland, O. G. & Falkum, E. (2010). Personal vulnerability and work‐home interaction: The effect of job performance‐based self‐esteem on work/home conflict and facilitation. Scandinavian Journal of Psychology 51, 480–487. The aim of the present study was to examine the longitudinal relationship between job performance‐based self‐esteem (JPB‐SE) and work‐home interaction (WHI) in terms of the direction of the interaction (work‐to‐home vs. home‐to‐work) and the effect (conflict vs. facilitation). A sample of 3,475 respondents from eight different occupational groups (lawyers, physicians, nurses, teachers, church ministers, bus drivers, and people working in advertising and information technology) supplied data at two points of time with a two‐year time interval. The two‐wave, cross‐lagged structural equations modeling (SEM) analysis demonstrated reciprocal relationships between these variables, i.e., job performance‐based self‐esteem may act as a precursor as well as an outcome of work‐home interaction. The strongest association was between job performance‐based self‐esteem and work‐to‐home conflict. Previous research on work‐home interaction has mainly focused on situational factors. This longitudinal study expands the work‐home literature by demonstrating how individual vulnerability (job performance‐based self‐esteem) contributes to the explanation of work‐home interactions.     

The neural basis of updating: Distinguishing substitution processes from other concurrent processes

Sörqvist, P. & Sætrevik, B. (2010). The neural basis of updating: Distinguishing substitution processes from other concurrent processes. Scandinavian Journal of Psychology, 51, 357–362. Most previous studies of updating processes have not been able to contrast processes of substituting items in memory with other concurrent processes. In the present investigation, we used a new task called “number updating” and an fMRI protocol to contrast the activation of trials that require item substitution (adding a new item to the working memory representation and suppressing an old item) with trials that involve no substitution (discarding the new item). Trials that require item substitution activated the dorsolateral prefrontal cortex, the posterior medial frontal cortex and the parietal lobes, areas typically seen activated for working memory tasks in general. Trials that do not require substitution activated the anterior medial frontal cortex. Studies examining executive functions have associated this area with cognitive conflict, and may represent suppression of the substitution processes.     

Psychometric properties of the Type D scale (DS14) in Norwegian cardiac patients

Bergvik, S., Sørlie, T., Wynn, R. & Sexton, H. (2010). Psychometric properties of the Type D scale (DS14) in Norwegian cardiac patients. Scandinavian Journal of Psychology. The combination of negative affectivity (NA) and social inhibition (SI) – the Type D Personality – is associated with poor outcomes in coronary artery disease (CAD) patients. A Norwegian translation of the standard instrument measuring Type D (DS14) was tested on 432 CAD patients receiving coronary revascularization treatment. Factor analysis produced two factors with high inter‐item reliability, indicating that the Norwegian DS14 has acceptable psychometric properties. Eighteen percent were classified as Type D, lower than has been reported elsewhere. Type D was associated with anxiety, depression, and passive coping. NA correlated positively with depression, anxiety, and passive coping. SI correlated positively with depression and anxiety, and negatively with active coping. The prevalence of Type D was higher among women, and negatively correlated with time since treatment. The variation in Type D prevalence among studies needs further elucidation as does the predictive power of continuous scoring of the Type D trait.     

Adolescent stress: Evaluation of the factor structure of the Adolescent Stress Questionnaire (ASQ‐N)

Moksnes, U. K., Byrne, D. G., Mazanov, J. & Espnes, G. A. (2010). Adolescent stress: Evaluation of the factor structure of the Adolescent Stress Questionnaire (ASQ‐N). Scandinavian Journal of Psychology, 51, 203–209. The present study reports an evaluation of the factor structure of the Norwegian version of the Adolescent Stress Questionnaire (ASQ‐N) among 723 students. Principal components analysis (PCA) revealed nine internally consistent dimensions of adolescent stress. Scales constructed from this PCA correlated positively with measures of depression and anxiety and negatively with self‐esteem. Girls reported higher stress levels than boys in seven of the nine scales and age was also positively correlated with the scale scores of adolescent stress. The results revealed that the instrument has potential for measuring adolescent stress. The stability of the ASQ‐N needs to be tested repeatedly, across cohorts and over time, to establish the adequacy for use in Norwegian adolescent studies.