Johan Braeken

Psychometric Properties of the Dutch Version of the Eating Disorder Inventory–3

The psychometric properties of the Dutch version of the Eating Disorder Inventory–3 (EDI-3) were tested in eating disordered patients (N = 514) using confirmatory factor analyses, variance decomposition, reliabilities, and receiver operating characteristic (ROC) curve analyses. Factorial validity results supported the 12 subscales, but model fit was impaired by correlated item errors, misallocated items, and redundant subscales. At the composite level, the Bulimia subscale was identified as a largely specific source of information that did not contribute much to its overarching composite. Reliabilities for subscales and composites ranged from .6 to .9. ROC curve analysis indicated good to excellent discriminative ability of the EDI-3 identifying clinical subjects against a reference group. In conclusion, further revisions of the EDI-3 might target the item allocation and (over-)differentiation of subscales and composites to further clarify its structure. For the clinical practice, we advise the careful use of the EDI-3, although it might serve as a good screening tool.

Why is working memory related to intelligence? Different contributions from storage and processing

Domain-specific contributions of working memory (WM), short-term memory (STM), and executive functioning (EF) to individual differences in intelligence were analysed using a latent variable approach. A sample of 345 participants completed a battery of 24 tests tapping the constructs of interests as comprehensively as possible. Visuospatial and verbal STM and WM tasks were administered along with three subcomponents of EF, namely inhibition, planning, and shifting. Intelligence was assessed by non-verbal/abstract/fluid intelligence (Gf) and verbal/crystallised intelligence (Gc) standardised tests. Structural equation modelling results show that EF is the main predictor of Gf, whereas verbal STM is the main predictor of Gc. Storage and processing providing different contributions to the prediction of Gf and Gc supports the view that both short-term storage and executive functioning account for the relationship between WM and intelligence. This main conclusion stresses the importance of acknowledging core cognitive constructs as being hierarchical systems with general and domain-specific mechanisms.

Parenting in Complex Conditions: Does Preterm Birth Provide a Context for the Development of Less Optimal Parental Behavior?

OBJECTIVE To examine the predictive value of parent, infant, and contextual factors related to preterm childbirth for later parenting behaviors. METHODS Mothers (n = 217) and fathers (n = 204) of term, moderately preterm, and very preterm infants were interviewed 1 month postpartum using the Clinical Interview for Parents of high-risk infants (CLIP), to assess their experiences and perceptions related to the pregnancy, delivery, infant, hospitalization, support system, and their narratives. Their responses were factor analyzed and entered into prediction models of parental behaviors (National Institute of Child Health and Human Development observations) 6 months postpartum. RESULTS Preterm birth was associated with negative experiences and concerns in parents. Regression analyses revealed, however, that irrespective of preterm birth, negative and unrealistic parental perceptions predicted less sensitive, more intrusive, and more withdrawn behavior. CONCLUSIONS Not prematurity per se, but particularly the presence of negative perceptions in parents, is predictive of difficulties in parent-infant interaction. The CLIP is a potentially useful instrument to identify families at risk.

Student perceptions of assessment and student self-efficacy in competence-based education

The purpose of this study was to provide insight into the interplay between student perceptions of competence-based assessment and student self-efficacy, and how this influences student learning outcomes. Results reveal that student perceptions of the form authenticity aspect and the quality feedback aspect of assessment do predict student self-efficacy, confirming the role of mastery experiences and social persuasions in enhancing student self-efficacy as stated by social cognitive theory. Findings do not confirm mastery experiences as being a stronger source of self-efficacy information than social persuasions. Study results confirm the predictive role of students’ self-efficacy on their competence outcomes. Mediation analysis results indicate that student’s perceptions of assessment have an indirect effect on student’s competence evaluation outcomes through student’s self-efficacy. Study findings highlight which assessment characteristics, positively influencing students’ learning, contribute to the effectiveness of competence-based education. Limitations of the study and directions for future research are indicated.

Delivering a Victim Impact Statement: Emotionally effective or counter-productive?:

Although the delivery of a Victim Impact Statement (VIS) in court is assumed to contribute to the healing and recovery process of victims of violent crimes, its effectiveness to facilitate emotional recovery is widely debated. The current longitudinal study is the first to empirically examine the psychological effects of delivering a VIS in terms of the two most important emotional reactions after crime: anger and anxiety. It extends previous findings by showing that the debate concerning the effectiveness of delivering a VIS is not a ‘black and white’ matter. In this article, we argue that the question should not be whether delivering a VIS ‘works’ or ‘doesn’t work’ for the victim, but for whom, and under which conditions. We show that delivering a VIS does not give rise to direct ‘therapeutic’ effects. However, we found that feelings of anger and anxiety decrease for victims who experience more control over their recovery process and higher levels of procedural justice.

An Empirical Kaiser Criterion.

In exploratory factor analysis (EFA), most popular methods for dimensionality assessment such as the screeplot, the Kaiser criterion, or—the current gold standard—parallel analysis, are based on eigenvalues of the correlation matrix. To further understanding and development of factor retention methods, results on population and sample eigenvalue distributions are introduced based on random matrix theory and Monte Carlo simulations. These results are used to develop a new factor retention method, the Empirical Kaiser Criterion. The performance of the Empirical Kaiser Criterion and parallel analysis is examined in typical research settings, with multiple scales that are desired to be relatively short, but still reliable. Theoretical and simulation results illustrate that the new Empirical Kaiser Criterion performs as well as parallel analysis in typical research settings with uncorrelated scales, but much better when scales are both correlated and short. We conclude that the Empirical Kaiser Criterion is a powerful and promising factor retention method, because it is based on distribution theory of eigenvalues, shows good performance, is easily visualized and computed, and is useful for power analysis and sample size planning for EFA.

Determinants of maternal fetal attachment in women from a community-based sample

Background Maternal fetal attachment (MFA) has been found to be an important predictor for the developing relationship between mother and child. During the last decades, research on determinants of MFA has yielded inconclusive and even contradictory results. Until now, a process model in which multiple determinants of MFA are studied concurrently has been lacking. The present study evaluates a process model (based on Belsky’s model of parenting) in which the specific contributions of parental, contextual, and expected child characteristics to MFA were examined. Methods Participants, 351 pregnant women from a community-based sample, completed questionnaires concerning their personality, attachment security, partner support, perceived stress, expected child temperament, and MFA at 26 weeks gestational age. Based on Belsky’s model, a set of competing structural equation models were formulated and evaluated with path analysis. Results MFA was found to be multiply determined by parental, contextual, and expected child characteristics. These factors explained 19% of the variance in MFA. Pregnant women who were more extrovert, conscientious and agreeable reported having higher levels of MFA. In contrast, those women who perceived more stress and expected having an infant with a dull temperament reported lower levels of MFA. Conclusion This study demonstrated that the theoretical framework of Belsky’s model is applicable for explaining variations in the quality of the mother–fetus relationship in the pregnancy period. More knowledge of the determinants of MFA could help to identify mothers at risk for developing suboptimal feelings of attachment.

Maternal and paternal infant representations: A comparison between parents of term and preterm infants

OBJECTIVE Research on parental attachment representations after preterm birth is limited and inconclusive. The present study is the first in which maternal and paternal attachment representations after term, moderately and very preterm birth are compared. In addition, special attention was directed toward disrupted attachment representations. METHOD Mothers and fathers of term infants (≥ 37 weeks of gestational age, n=71), moderately preterm infants (≥ 32-37 weeks of gestational age, n=62) and very preterm infants (<32 weeks of gestational age, n=56) participated in the present study. Attachment representations (balanced, disengaged, distorted) about their infants were evaluated with the Working Model of the Child Interview (WMCI). To asses disrupted representations the coding of the WMCI was extended with the disrupted scale (WMCI-D). RESULTS The three main classifications of attachment representations were not affected by preterm birth. In addition, there were no gender differences in the rate of balanced representations. In case of non-balanced representations however, maternal representations were more often distorted, whereas fathers showed more often disengaged representations. Results further revealed that maternal disrupted attachment representations were marked by role/boundary confusion or disorientation, whereas paternal disrupted attachment representations were characterized by withdrawal. CONCLUSION Given the gender differences it is essential to tailor interventions according to the attachment representations of the parent, in order to be able to alter their non-balanced and/or disrupted attachment representations.

Investigating latent constructs with item response models: A MATLAB IRTm toolbox

Item response theory (IRT) models are the central tools in modern measurement and advanced psychometrics. We offer a MATLAB IRT modeling (IRTm) toolbox that is freely available and that follows an explicit design matrix approach, giving the end user control and flexibility in building a model that goes beyond standard models, such as the Rasch model (Rasch, 1960) and the two-parameter logistic model. As such, IRTm allows for a large variety of unidimensional IRT models for binary responses, the incorporation of additional person and item information, and deviations from common model assumptions. An exclusive key feature of the toolbox is the inclusion of copula IRT models to handle local item dependencies. Two appendixes for this report, containing example code and information on the general copula IRT in IRTm, may be downloaded from brm.psychonomic-journals.org/content/supplemental.

Stability of fathers’ representations of their infants during the transition to parenthood

Studies investigating fathers’ roles in child development have focused on a range of different aspects. However, few studies have focused on the early father–infant relationship, which already emerges before the child is born. The aim of this study is to examine the concordance of fathers’ representations of their children during the transition to parenthood. The influences of demographic variables, psychological wellbeing, and personality on the stability of these representations are investigated. At 26 weeks gestational age and when infants were six months old, fathers (N = 243) completed questionnaires and the Working Model of the Child Interview during a home visit. A strong association was found between fathers’ prenatal and postnatal representations. First-time fathers more often had balanced representations than fathers who already had children. Furthermore, agreeable fathers were more likely to evolve from a non-balanced prenatal representation to a balanced postnatal representation.