Mom told me scary things about this animal: Parents installing fear beliefs in their children via the verbal information pathway

This study investigated whether fear beliefs can be installed in children after parents had received negatively tinted information about a novel stimulus. Parents of children aged 8-13 years (N = 88) were presented with negative, positive, or ambiguous information about an unknown animal and then given a number of open-ended vignettes describing confrontations with the animal with the instruction to tell their children what would happen in these situations. Results indicated that children's fear beliefs were influenced by the information that was provided to the parent. That is, parents who had received negative information provided more threatening narratives about the animal and hence installed higher levels of fear beliefs in their children than parents who had received positive information. In the case of ambiguous information, the transmission of fear was dependent on parents' trait anxiety levels. More precisely, high trait anxious parents told more negative stories about the unknown animal, which produced higher fear levels in children.     

“Honey, you’re jumping about”—Mothers’ scaffolding of their children's and adolescents’ life narration

Research on mother–child reminiscing as a socializing practice for autobiographical memory is extended from early childhood and the narrating of single events to adolescence and the narrating of an entire life story. To explore whether the development of the life story in adolescence depends on qualities of the narrator or on the brevity of the narrated life, and whether mothers adapt their scaffolding strategies in co-narrations of the child's life to the child's zone of proximal development, 16 mother–child pairs (child's ages 8, 12, 16, and 20 years) both co-narrated and individually narrated the child's life. As expected, only the coherence of the children's, but not the mothers’, narratives varied with the child's age. Also, mothers supported temporal structuring more in younger children and arguments about personality and its development more in adolescents.     

Theory and Analysis of Total,Direct, and Indirect Causal Effects

Mediation analysis, or more generally models with direct and indirect effects, are commonly used in the behavioral sciences. As we show in our illustrative example, traditional methods of mediation analysis that omit confounding variables can lead to systematically biased direct and indirect effects, even in the context of a randomized experiment. Therefore, several definitions of causal effects in mediation models have been presented in the literature (Baron &; Kenny, 1986 Baron, R.M., &; Kenny, D.A. (1986). The moderator-mediator variable distinction in social psychological research: Conceptual, strategic and statistical considerations. Journal of Personality and Social Psychology, 51, 1173–1182. doi:10.1037/0022-3514.51.6.1173[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]; Imai, Keele, &; Tingley, 2010 Imai, K., Keele, L., &; Tingley, D. (2010). A general approach to causal mediation analysis. Psychological Methods, 15, 309–334. doi:10.1037/a0020761[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]; Pearl, 2012 Pearl, J. (2012). The causal mediation formula: A guide to the assessment of pathways and mechanisms. Prevention Science, 13, 426–436. doi:10.1007/s11121-011-0270-1[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]). We illustrate the stochastic theory of causal effects as an alternative foundation of causal mediation analysis based on probability theory. In this theory we define total, direct, and indirect effects and show how they can be identified in the context of our illustrative example. A particular strength of the stochastic theory of causal effects are the causality conditions that imply causal unbiasedness of effect estimates. The causality conditions have empirically testable implications and can be used for covariate selection. In the discussion, we highlight some similarities and differences of the stochastic theory of causal effects with other theories of causal effects.     

A dirty animal is a scary animal! Effects of disgust-related information on fear beliefs in children

The present study investigated whether disgust-valenced information has an impact on children's fear beliefs about animals. Non-clinical children aged between 9 and 13 years (n=159) were presented with disgust-related and cleanliness-related information about unknown animals (Australian marsupials). Before and after information, beliefs of disgust and fear regarding the animals were assessed. Results showed that disgust-related information not only induced higher levels of disgust but also increased children's fear beliefs in relation to these animals. The other way around, cleanliness-related information decreased levels of disgust and resulted in lower levels of fear. The implications for the role of disgust in the development of animal fear are briefly discussed.     

Cognitive inhibition and working memory in attention-deficit/hyperactivity disorder

Studies of cognitive control in attention-deficit/hyperactivity disorder (ADHD) have emphasized the ability to suppress motor responses (i.e., behavioral inhibition) rather than the ability to actively suppress prepotent mental representations (i.e., cognitive inhibition). Further, working memory deficits are suspected in ADHD, yet their distinction from cognitive inhibition is unclear. Two hundred and eighty-eight adolescent and adult participants, 115 of whom met criteria for ADHD and 173 of whom were for non-ADHD comparison, completed a sentence processing task that required the suppression of an incorrect interpretation and a working memory task. The results failed to support cognitive inhibition problems in ADHD. Moreover, the ability to reanalyze sentences with a temporary misinterpretation was at least partially related to working memory performance. The results challenge a unitary inhibition problem in ADHD and suggest inhibition problems do not extend to cognitive suppression in this age range.     

Classification statistical techniques: an applied and comparative study

The aim of this article is to assess and compare three classification statistical techniques--logistic regression, discriminant analysis and classification trees--to identify the personality characteristics associated with the risk of suffering from ischemic cardiovascular acute episodes (ICAE). The sample comprised 313 participants, men and women, aged from 36 to 80. Participants were divided into two groups: a clinical group of patients (n = 143) who were diagnosed as suffering from ICAE, and a control group (n = 170). Both groups were equated in gender, age, socio-economic and educational level. In view of the comparative study of the analytical procedures, we recommend classification trees as the best choice, as it was the most accurate for the individuals in the clinical group, a simple data analysis and a meaningful clinical interpretation. The predictive validity analysis of the MCMI-II allowed the construction of a reduced version made up of 9 personality scales from the 22 scales in the original version. Thus, we could identify the patients with a higher probability of suffering from ICAE, and additionally, generate an empirical model comprising seven and five personality profiles associated, respectively, with the increase and the decrease of the probability of suffering from ICAE.     

Possible Selves in Adolescence: Development and Validation of a Scale for their Assessment

Possible selves (PSs) have a significant role in adolescents' development. For this reason, it is of great importance to have adequate measures to operationalize them. The aim of this work is to present the construction and validation of a scale to assess PSs at the end of high school in multiple domains. Participants were adolescents (n = 320) of both sexes (female = 51.3%) from high-schools in Buenos Aires City, Argentina (age, M = 14.9, SD = 1.5). The scale was developed based on a literature review and a previous qualitative study. Expert judges' assessment revealed that it has good content validity. The scale's structure was studied with exploratory factor analysis and a 5-factor structure with theoretical meaning was found. Spearman's correlations between current and future self-perceptions show evidence of convergent validity. Mann-Whitney U test shows that the scale can discriminate by sex and age. The scale shows adequate to very good internal consistency. These results show that the scale has adequate psychometric properties to assess PSs in Argentine adolescents. The advantages of this scale relative to existing measures of PSs are discussed. Scale development allows us to know more about how adolescents think they will be during a significant life transition such as the end of high school. This is particularly important for planning interventions that focus on motivation and behavior regulation.     

Assessing reading comprehension with narrative and expository texts: Dimensionality and relationship with fluency,vocabulary and memory

Reading comprehension assessment should rely on valid instruments that enable adequate conclusions to be taken regarding students' reading comprehension performance. In this article, two studies were conducted to collect validity evidence for the vertically scaled forms of two Tests of Reading Comprehension for Portuguese elementary school students in the second to fourth grades, one with narrative texts (TRC‐n) and another with expository ones (TRC‐e). Two samples of 950 and 990 students participated in Study 1, the study of the dimensionality of the TRC‐n and TRC‐e forms, respectively. Confirmatory factor analyses provided evidence of an acceptable fit for the one‐factor solution for all test forms. Study 2 included 218 students to collect criterion‐related validity. The scores obtained in each of the test forms were significantly correlated with the ones obtained in other reading comprehension measures and with the results obtained in oral reading fluency, vocabulary and working memory tests. Evidence suggests that the test forms are valid measures of reading comprehension.