Exploring Diurnal Cortisol Rhythms of Kindergarten Teachers in Kosovo and Ukraine

Teachers’ stress is a dynamic combination of the individual teacher's characteristics and characteristics of the classroom and school environment. To date, there are limited studies on teachers’ stress in the context of lower‐middle‐income countries (LMICs), where working conditions as well as general political and economic circumstances might pose a considerable threat for teachers’ well‐being. This study explores whether certain combinations of individual and environmental experiences of teachers in LMICs may result in stress, assessed as patterns of diurnal cortisol rhythm. Participants were kindergarten teachers in Kosovo and Ukraine, two LMICs in Europe. Latent Profile Analysis identified three subgroups of teachers that significantly differed on teachers’ education and experience. Preliminary results of Latent Growth Modeling suggested differences between profiles in baseline waking cortisol and patterns of diurnal decline. Teachers in the profile that was characterized by the longest experience working in the field but the lowest level of education showed blunted cortisol in the morning and a flatter slope; a pattern that could indicate a maladaptive cortisol response. Future directions for studying stress processes among teachers in LMICs and implications for policy and practice on how to support teacher well‐being in low‐resource contexts are discussed.     

The neural code for written words: a proposal

How is reading, a cultural invention, coded by neural populations in the human brain? The neural code for written words must be abstract, because we can recognize words regardless of their location, font and size. Yet it must also be exquisitely sensitive to letter identity and letter order. Most existing coding schemes are insufficiently invariant or incompatible with the constraints of the visual system. We propose a tentative neuronal model according to which part of the occipito-temporal 'what' pathway is tuned to writing and forms a hierarchy of local combination detectors sensitive to increasingly larger fragments of words. Our proposal can explain why the detection of 'open bigrams' (ordered pairs of letters) constitutes an important stage in visual word recognition.     

A Bayesian Theory of Sequential Causal Learning and Abstract Transfer

Two key research issues in the field of causal learning are how people acquire causal knowledge when observing data that are presented sequentially, and the level of abstraction at which learning takes place. Does sequential causal learning solely involve the acquisition of specific cause‐effect links, or do learners also acquire knowledge about abstract causal constraints? Recent empirical studies have revealed that experience with one set of causal cues can dramatically alter subsequent learning and performance with entirely different cues, suggesting that learning involves abstract transfer, and such transfer effects involve sequential presentation of distinct sets of causal cues. It has been demonstrated that pre‐training (or even post‐training) can modulate classic causal learning phenomena such as forward and backward blocking. To account for these effects, we propose a Bayesian theory of sequential causal learning. The theory assumes that humans are able to consider and use several alternative causal generative models, each instantiating a different causal integration rule. Model selection is used to decide which integration rule to use in a given learning environment in order to infer causal knowledge from sequential data. Detailed computer simulations demonstrate that humans rely on the abstract characteristics of outcome variables (e.g., binary vs. continuous) to select a causal integration rule, which in turn alters causal learning in a variety of blocking and overshadowing paradigms. When the nature of the outcome variable is ambiguous, humans select the model that yields the best fit with the recent environment, and then apply it to subsequent learning tasks. Based on sequential patterns of cue‐outcome co‐occurrence, the theory can account for a range of phenomena in sequential causal learning, including various blocking effects, primacy effects in some experimental conditions, and apparently abstract transfer of causal knowledge.     

Magnetoencephalography and magnetic source imaging: technology overview and applications in psychiatric neuroimaging

Magnetoencephalography (MEG) is an electrophysiologic brain imaging technology that has been applied to the study of mental illness, particularly schizophrenia. Like electroencephalography, it provides excellent temporal resolution, and in combination with magnetic resonance imaging, can also provide good spatial resolution. Studies of the auditory system in schizophrenia using MEG have demonstrated an abnormality in functional cerebral asymmetry, in which persons with schizophrenia typically show reduced, or reversed, cerebral asymmetry compared with normal subjects. This abnormality is sex-specific; it is more pronounced in males with schizophrenia. These findings have not been demonstrated using other neuroimaging strategies. Thus, MEG appears to offer a unique and valuable contribution to psychiatric neuroimaging. Current research and clinical applications of MEG are limited, however, by the high cost of instrumentation. The cost of MEG systems should improve as more applications are developed, in schizophrenia as well as other neuropsychiatric conditions, and hospitals begin to invest in the technology.     

The Animal Preference Test and its relationship to behavioral problems in young children

We compared performance on the Animal Preference Test; (APT; Van Krevelen, 1955) with parental assessment of children's behavioral problems as measured by the Achenbach Child Behavior Checklist (CBCL; Achenbach & Edelbrock, 1986). Forty Black and Hispanic 6- to 12-year-old boys were asked to name the three animals they would most like to be and the three animals they would least like to be if they could not be a human being. Reasons for animal choice were categorized into one of four theme categories: aggression, autonomy, nurturance, and pleasure-beauty. Each category had a high degree (91%) of interrater reliability. When reasons for animal choice were dichotomized into aggression/autonomy versus nurturance/pleasure-beauty, children who rejected animals because of their nurturant or aesthetic qualities displayed significantly greater aggressive (p less than .001) and depressed (p less than .05) behaviors on the CBCL. The choice of animals the subjects would most like to be was not meaningfully associated with CBCL performance. Further research with this easily administered and reliably scored projective test appears warranted.     

Spelling development in the Spanish language

This study focused on spelling development in Spanish children from elementary grades. A sample of 1045 was selected from 2nd to 6th grade belonging to four schools in Tenerife Island with an age range between 7 and 12 years old (M = 113.8, SD = 17.6). We administered a standardized writing test that includes diverse subtests to assess spelling, ruled and not ruled, and various written composition tasks (i.e., writing a story based on vignettes, describing a character and writing a story). We calculated the average of correct spellings in each variable and school level, and we also analyzed the type of misspellings that children made across different writing tasks. We found that spelling is acquired by 4th-grade children when it is not ruled, whereas the spelling of ruled words is acquired by 5th-grade children. When we analyzed the misspellings in a dictation task, we found that the children confused spelling of the graphemes c/s/z/x. Across different writing tasks, we found that students committed more misspellings with the graphemes b/v, h y c/s/z/x before they finished the 4th elementary grade.     

Validity evidence of the Health-Related Quality of Life for Drug Abusers Test based on the Biaxial Model of Addiction

The aim of this work is to show evidence of the validity of the Health-Related Quality of Life for Drug Abusers Test (HRQoLDA Test). This test was developed to measure specific HRQoL for drugs abusers, within the theoretical addiction framework of the biaxial model. The sample comprised 138 patients diagnosed with opiate drug dependence. In this study, the following constructs and variables of the biaxial model were measured: severity of dependence, physical health status, psychological adjustment and substance consumption. Results indicate that the HRQoLDA Test scores are related to dependency and consumption-related problems. Multiple regression analysis reveals that HRQoL can be predicted from drug dependence, physical health status and psychological adjustment. These results contribute empirical evidence of the theoretical relationships established between HRQoL and the biaxial model, and they support the interpretation of the HRQoLDA Test to measure HRQoL in drug abusers, thus providing a test to measure this specific construct in this population.     

Presence and emotions in virtual environments: the influence of stereoscopy.

This study investigates how stereoscopy (the illusion of depth and 3D imaging) affects the sense of presence and the intensity of the positive mood that users feel in virtual environments (VEs). A between-group design was used, and 40 volunteers were randomly assigned to one of two experimental conditions (stereoscopy vs. no stereoscopy) and to one of two emotional VEs (relaxation or joy). The participants' emotions were assessed before and after the VR experience. Presence was measured with two postexperiment questionnaires (ITC-SOPI and SUS). Results show that there were no differences between stereoscopic and monoscopic presentations in VEs (neither subjective sense of presence nor emotional reactions). Practical and theoretical implications of these findings are discussed herein.     

The Subjectivity Inherent in Objective Measures of Well-Being

Claims abound that GDP accounting ignores social and ecological problems and misrepresents social well-being. While GDP growth continues to be a policy priority in most countries, it is at best one objective among many in achieving humanity’s “ultimate purpose.” Yet revisions to the income accounts and alternative well-being indicators are also problematic, since they reinforce the illusion that social and ecological impacts on well-being are objectively measurable. Future policy must not only be informed to a greater extent by qualitative and multi-dimensional assessments, but must recognize that any rank-ordering of society’s ultimate ends cannot but be subjective.

Teaching oddity and insertion to Head Start children: An economical cognitive intervention

Two interventions were offered to Head Start preschoolers. Half of the children played numerous learning set games designed to teach the children (1) the oddity principle and (2) how to insert objects into a series. Mastery of these concepts is theoretically an important aspect of school readiness. The other half of the children engaged in the I Can Problem Solve (ICPS) exercises, a program designed to increase the children's competency in recognizing and responding to other people's feelings. The children who played the learning set games became superior at oddity and insertions with manipulable objects, and generalized these games to workbook-like formats resembling those encountered in kindergarten. They also scored higher on the numeracy and memory scales of the McCarthy Scales of Children's Abilities, indicating that mastery of oddity and insertions may have served as foundations for further cognitive growth. The children who participated in the ICPS exercises became superior at creating solutions to interpersonal problems, as measured by the Preschoolers Interpersonal Problem Solving Scale. The differences in the outcomes indicate that both interventions were successful in their own domains. The advantage the cognitive intervention produced on the McCarthy Scales suggests that oddity and insertion abilities may be a foundation in fact as well as in theory for general cognitive growth at this age.