Search

School climate is an essential ingredient of student well-being and academic success. Although it has been studied extensively, only a few well-validated instruments are available for the assessment of school climate. The aim of this study was to assess the factor validity and measurement invariance of the Socio-educational Environment Questionnaire (SEQ) using data from a longitudinal cohort of 1036 French-Canadian high school students who were assessed on three occasions. Exploratory structural equation modeling was used to empirically test the factor structure and measurement invariance across time and gender. The results supported the proposed SEQ five-factor model (teacher-student relationship, student relationships, justice climate, academic climate, and safety climate) and its longitudinal invariance across high school years. Gender invariance was also established. Finally, predictive validity was assessed. Among the five school climate dimensions, teacher-student relationships, academic and safety climate were related to subsequent school engagement. School climate was not associated with either boys' or girls' academic achievement. Overall, this study suggests that the SEQ is a valid and reliable short tool for the assessment of school climate in high school.

Studies highlighting the importance of parental involvement in schooling have multiplied over the past years. However, well-validated tools assessing the different dimensions of parental involvement are lacking, especially when addressing young students' perception of their parents' involvement. This study offers a preliminary validation of the Student-Rated Parental School Involvement Questionnaire (SR-PSIQ); factor structure, measurement invariance, and predictive validity were assessed. Data collected on four measurement occasions from 923 French-Canadian primary school students was used. Results favored a four-factor model (parental expectations, parent--child communication, homework supervision, and school-based involvement). The SR-PSIQ was invariant across time, student gender, parental immigration status, and socioeconomic status. Regarding predictive validity, all dimensions of parental involvement were associated with later student engagement. Overall, the SR-PSIQ is a brief, valid, and reliable instrument that can easily be used by researchers or partitioners who want to understand how parents are involved in their child's schooling.

This study investigates the nexus between teacher exposure to student aggression, their level of emotional exhaustion, and the role of belongingness and perceived school safety as mediators. Random-Intercept Cross-Lag Panel Models were conducted among a sample of 2,072 secondary teachers (57.14% female) from grades 7 to 11 in 77 schools. Chronic levels of exposure to globally high levels of student aggression and specific high levels of direct victimization were associated with increased levels of emotional exhaustion. These associations were fully mediated by teacher perceptions of school belongingness and safety. Temporary fluctuations in witnessing student-to-student aggression led to increased emotional exhaustion via decreased perceptions of safety. Specific levels of witnessing student-to-teacher aggression were not linked with exhaustion over time beyond global levels of exposure to student aggression. The chronicity of exposure to different forms of student aggression is a risk factor for emotional exhaustion among teachers.

This paper describes the nature of home-school value discrepancies perceived by students, and tests associations between such value discrepancies and teacher-student relationships with student generational status as a moderator. Using a sample of 1,551 students from grades 10 and 11, chi-square tests and ANOVAs were used to describe the nature of discrepancies, while hierarchical linear regressions were conducted to test associations. Second-generation students generally perceived more differences between family-school values. When experiencing less value discrepancies, students reported closer teacher-student relationships. Value discrepancies were also associated with conflict, third-plus-generation standing out. Practitioners should mitigate value discrepancies to improve teacher-student relationships. [ABSTRACT FROM AUTHOR]

The purpose of this study was to evaluate the impact of adopting a Mediterranean diet on dietary cost and energy density in free-living conditions. The 12-wk nutritional intervention consisted of 2 group courses and 7 individual sessions with a dietician in a sample of 73 healthy women. To evaluate the dietary response to the nutritional intervention, a registered dietician administered a FFQ at 0, 6, 12, and 24 wk. Total daily dietary cost was calculated using a price list including all items from the FFQ. Our findings indicated that daily energy cost evaluated at wk 12 vs. wk 0 [1046 [+ or -] 217 vs. 967 [+ or -] 192 k J/Canadian dollars (CANS), respectively, P = 0.18] and total daily dietary cost (8.61 + 2.13 vs. 8.75 [+ or -] 2.50 CAN$/d per participant, respectively, P - 0.58) did not change. Total daily energy density at wk 12 decreased compared with wk 0 (2.56 [+ or -] 0.76 vs. 2.20 [+ or -] 0.67 kJ/g; P < 0.0001). Adherence to the Mediterranean diet led to increased cost related to vegetables, fruits, legumes, nuts and seeds, canola/olive oil, whole grains, poultry, and fish (P [less than or equal to] 0.01) and to reduced dietary cost for red meat, refined grains, desserts and sweets, and fast food (P [less than or equal to] 0.008). In conclusion, these data suggest that adherence to a nutritional intervention program promoting the Mediterranean food pattern is not associated with increased daily dietary cost or energy cost but led to a reduction in energy density. Consequently, increased cost should not be considered a barrier to the promotion and adoption of a Mediterranean diet.

The aim of the present study was to evaluate the effect of a nutritional intervention promoting the Mediterranean food pattern under free-living conditions on circulating oxidized LDL (ox-LDL) in a group of 71 healthy women from the Quebec City metropolitan area. The 12-wk nutritional intervention consisted of 2 courses on nutrition and 7 individual sessions with a dietitian. A score based on the 11 components of the Mediterranean pyramid was established to determine the women's adherence to the Mediterranean food pattern. Plasma ox-LDL concentrations were measured by a monoclonal antibody mAb-4E6-based competition ELISA. Among all women, plasma ox-LDL decreased by 11.3% after 12 wk of nutritional intervention (P < 0.0001) despite a lack of change in plasma LDL cholesterol (LDL-C). Also, an increase in the Mediterranean dietary score was significantly correlated with a decrease in ox-LDL concentrations (r = -0.30; P = 0.01). More specifically, increases in servings of fruits (r = -0.25; P < 0.05) and vegetables (r = -0.24; P < 0.05) were associated with decreases in ox-LDL concentrations. Changes in the food pattern in response to a nutritional intervention promoting the Mediterranean food pattern were accompanied by beneficial effects in circulating ox-LDL concentrations in healthy women. KEY WORDS: * Mediterranean diet * oxidized LDL * nutritional intervention * women

Abstract Objective To evaluate the validity (study 1) and the reproducibility (study 2) of an interviewer-administered food frequency questionnaire (FFQ). Method The FFQ was designed at Laval University and contains 91 items and 33 subquestions. Study 1: The FFQ was compared against a 3-day food record (2 week-days and 1 weekend-day), at week 0, 6 and 12 of a nutritional intervention. Study 2: In order to evaluate the reproducibility of the FFQ, 2 registered dietitians administered the FFQ 4-weeks apart among subjects who were not part of the nutritional intervention. Results Study 1: Mean values for intake of most nutrients assessed by the FFQ and by the 3-day food record were not statistically different. Energy-adjusted correlation coefficients for major macronutrients ranged from 0.36 for proteins to 0.60 for carbohydrates (p ≤ 0.01). Agreement analysis revealed that on average, 35% of the subjects were classified in the same quartile when nutrients were assessed by either the 3-day food record or the FFQ. Study 2: Significant associations were observed between dietary measurements derived from the two FFQs administered 4 weeks apart. Correlation coefficients for the reproducibility of macronutrients ranged from 0.66 for carbohydrates to 0.83 for lipids after energy adjustment. On average, 46% of the subjects were classified in the same quartile when nutrient intakes were assessed by either FFQ. Conclusion These data indicated that the FFQ developed has a good validity and is reproducible.

Perception and motor control traditionally are studied separately. However, motor activity can serve as a scaffold to shape the sensory flow. This tight link between motor actions and sensing is particularly evident in active sensory systems. Here, we investigate how the weakly electric mormyrid fish Gnathonemus petersii of undetermined sex structure their sensing and motor behavior while learning a perceptual task. We find systematic adjustments of the motor behavior that correlate with an increased performance. Using a model to compute the electrosensory input, we show that these behavioral adjustments improve the sensory input. As we find low neuronal detection thresholds at the level of medullary electrosensory neurons, it seems that the behavior-driven improvements of the sensory input are highly suitable to overcome the sensory limitations, thereby increasing the sensory range. Our results show that motor control is an active component of sensory learning, demonstrating that a detailed understanding of contribution of motor actions to sensing is needed to understand even seemingly simple behaviors. [ABSTRACT FROM AUTHOR]

Introduction: This article discusses the development and pretesting of key visual imagery in a promotional campaign developed in Quebec, Canada. This campaign is the media-based component of a broader prevention strategy involving the use of the Triple P program (Sanders, 1999).Objectives: The purpose was to pretest with parents the preliminary version of a poster that uses the campaign's key visual imagery prior to final production.Method: In total, 26 parents from the regions of Quebec City and Montreal participated in four focus groups.Results: Two general themes emerged from the focus groups: (i) emotions and reactions arising from the key visual imagery; and (ii) comprehension of the message being conveyed.Conclusion: Based on this information, recommendations were made to the marketing agency, which then modified the campaign's key visual imagery and proposed a final layout. [ABSTRACT FROM AUTHOR]

Friction ridge skin is elastic and thus undergoes deformation when subjected to deposition pressure and movement. This study quantified deformation in a fingerprint when performing three and five millimeter, left and right, sliding movements at high, medium, and low deposition pressures. Latent fingerprints were deposited on a glass plate, developed with Chemist Gray powder, and analyzed using Adobe Photoshop. For the analysis, three distinct minutiae were selected in the prints: the core, a minutia to the left of the core, and a minutia to the right of the core. The distances between these three minutia were compared before and after movement as a percent difference to determine the effect of the following variables on deformation: deposition pressure, movement direction, fingerprint pattern (loop, whorl, or arch), distance travelled during deposition, and age of the participant. It was found that most movement conditions decreased the distance between the three points, as compared to the stationary condition, which was shown by a negative percent difference. Also, three millimeter movements resulted in less deformation than five millimeter movements overall. The other variables that were investigated did not have as large of an effect as was anticipated. [ABSTRACT FROM AUTHOR]

Introduction: Children and youth in out-of-home care face many challenges regarding their development and general well-being. It is necessary to put in place best practices to support them where they are most vulnerable. Providing recommendations to health and social services for best practices regarding social and academic success interventions, this study puts forward a synthesis method that combines empirical data and the expertise of key practitioners in the context of Quebec social services. Methods: A systematic review was first undertaken to identify the most effective interventions. Included studies (n = 31) were analyzed according to their methodological quality, collaboration processes, and type of care (foster home vs. residential care). To ensure the applicability of the recommendations made in the context of Quebec social services, contextual data, and clinical expertise were collected. Contextual data was gathered through local research reports, administrative data, and government documents. The expertise of multiple stakeholders was obtained in follow-up committees and semi-structured interviews (n = 4). In addition, to ensure their relevance and scope, recommended guidelines were debated in a deliberation committee. Results: The analysis between expert, contextual and empirical data led to several recommended evidence-based practices. In accordance with expert opinions, experimental and quasi-experimental studies show that various types of collaboration are beneficial for children and youth in out-of-home care. Notably, intersectoral collaborations were warranted in more complex situations (i.e., youth in residential centers), while partnership agreement was sufficient in less complex situations (i.e., children in foster homes). However, even if effective, some interventions are difficult to apply in real life and certain considerations must be taken into account (e.g. confidentiality issues, availability of resources). Conclusions: Utilizing three sets of data, guidelines have been proposed to help health and social services to identify best practices and promote the academic development of out-of-home care children and youth. [ABSTRACT FROM AUTHOR]

Accelerating Detection of Lung Pathologies with Explainable Ultrasound Image Analysis. The authors wish to make the following corrections to this paper [[1]]: The Authorship (Add One New Author) In the original paper [[1]], Julie Goulet was not included as an author in the published article. The author's affiliation is: 7 Physik Department T35 and Bernstein Center for Computational Neuroscience, Technische Universität München, 85747 Garching bei München, Germany; julie@ph.tum.de Author Contributions Conceptualization, J.B., N.W., M.C., G.B. and J.G.; methodology, J.B., N.W. and G.B.; software, J.B. and N.W.; validation, C.B., G.B., A.A., B.R. and K.B.; formal analysis, J.B. and N.W.; investigation, J.B. and N.W.; resources, J.B.; data curation, N.W., M.C., C.B., G.B., K.L. and J.G.; writing - original draft preparation, J.B., N.W. and M.C.; writing - review and editing, J.B., N.W., M.M., B.R. and K.B.; visualization, J.B. and N.W.; supervision, B.R. and K.B.; project administration, B.R. and K.B. All authors have read and agreed to the published version of the manuscript. [Extracted from the article]

Fish and aquatic frogs detect minute water motion by means of a specialized mechanosensory system, the lateral line. Ubiquitous in fish, the lateral-line system is characterized by hair-cell based sensory structures across the fish's surface called neuromasts. These neuromasts occur free-standing on the skin as superficial neuromasts (SN) or are recessed into canals as canal neuromasts. SNs respond to rapid changes of water velocity in a small layer of fluid around the fish, including the so-called boundary layer. Although omnipresent, the boundary layer's impact on the SN response is still a matter of debate. For the first time using an information-theoretic approach to this sensory system, we have investigated the SN afferents encoding capabilities. Combining covariance analysis, phase analysis, and modeling of recorded neuronal responses of primary lateral line afferents, we show that encoding by the SNs is adequately described as a linear, velocity-responsive mechanism. Afferent responses display a bimodal distribution of opposite Wiener kernels that likely reflected the two hair-cell populations within a given neuromast. Using frozen noise stimuli, we further demonstrate that SN afferents respond in an extremely precise manner and with high reproducibility across a broad frequency band (10–150 Hz), revealing that an optimal decoder would need to rely extensively on a temporal code. This was further substantiated by means of signal reconstruction of spike trains that were time shifted with respect to their original. On average, a time shift of 3.5 ms was enough to diminish the encoding capabilities of primary afferents by 70%. Our results further demonstrate that the SNs' encoding capability is linearly related to the stimulus outside the boundary layer, and that the boundary layer can, therefore, be neglected while interpreting lateral line response of SN afferents to hydrodynamic stimuli. [ABSTRACT FROM AUTHOR]

Associations between eating behaviours and dietary variables have not been thoroughly investigated in healthy postmenopausal women in a real-life uncontrolled context. To investigate how eating behaviours (cognitive dietary restraint, disinhibition and susceptibility to hunger) were associated with food and drink consumption, energy density and meal pattern in 112 healthy postmenopausal women (age 56·8 (sd 4·4) years) not on hormonal therapy. Women completed a 3 d weighed food record and filled out the Three-Factor Eating Questionnaire. The sample was divided according to the median of the distribution of cognitive dietary restraint and disinhibition (9 and 6 respectively). Both subgroups of women with high restraint level (presenting either high or low disinhibition) consumed a diet with a lower energy density than subgroups of women with lower restraint level. Women with high restraint–low disinhibition had a lower consumption of red meat and processed meat and a lower consumption of diet soft drinks than women with low restraint–high disinhibition. They were also characterised by a higher intake of whole grains than women with high restraint–high disinhibition and than women with lower restraint level (with either high or low disinhibition). Women with high restraint–high disinhibition levels showed differences in dietary variables when compared with subgroups of women with lower restraint level, namely for refined grains and diet soft drinks. We conclude that in healthy postmenopausal women, dietary consumption of specific food and drink may be related to particular eating behaviours. Women with high restraint and low disinhibition levels generally showed the most healthy dietary pattern. [ABSTRACT FROM PUBLISHER]

Objective: To evaluate the validity (study 1) and the reproducibility (study 2) of an interviewer-administered food frequency questionnaire (FFQ). Method: The FFQ was designed at Laval University and contains 91 items and 33 subquestions. Study 1: The FFQ was compared against a 3-day food record (2 week-days and 1 weekend-day), at week 0, 6 and 12 of a nutritional intervention. Study 2: In order to evaluate the reproducibility of the FFQ, 2 registered dietitians administered the FFQ 4-weeks apart among subjects who were not part of the nutritional intervention. Results: Study 1: Mean values for intake of most nutrients assessed by the FFQ and by the 3-day food record were not statistically different. Energy-adjusted correlation coefficients for major macronutrients ranged from 0.36 for proteins to 0.60 for carbohydrates (p ⩽ 0.01). Agreement analysis revealed that on average, 35% of the subjects were classified in the same quartile when nutrients were assessed by either the 3-day food record or the FFQ. Study 2: Significant associations were observed between dietary measurements derived from the two FFQs administered 4 weeks apart. Correlation coefficients for the reproducibility of macronutrients ranged from 0.66 for carbohydrates to 0.83 for lipids after energy adjustment. On average, 46% of the subjects were classified in the same quartile when nutrient intakes were assessed by either FFQ. Conclusion: These data indicated that the FFQ developed has a good validity and is reproducible. [ABSTRACT FROM AUTHOR]

The present study examined the effect of a nutritional intervention promoting the Mediterranean food pattern in uncontrolled ‘real life’ conditions among a group of 77 French-Canadian women. The principal objective was to document changes in the plasma lipid-lipoprotein profile and in body weight that occurred in response to the intervention. The 12-week nutritional intervention included two group sessions, three individual sessions and four 24-h recalls (phone interview) with a registered dietitian. A score based on the 11 components of the Mediterranean pyramid, ranging from 0 to 44 points, was established to evaluate the adhesion to the Mediterranean food pattern. The Mediterranean score increased from 21.1±3.6 at baseline to 28.6±4.4 after 6 weeks of intervention (P<0.0001) with no further increase at week 12. Small but significant decreases in total cholesterol and apolipoprotein B (apoB) as well as in body mass index (BMI) were observed after 6 weeks of intervention. No significant change in plasma concentrations of high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C) and triglycerides (TG) were observed in response to the nutritional intervention. In conclusion, a nutritional intervention program promoting the Mediterranean food pattern was effective in modifying food habits of healthy women from the Que´bec City metropolitan area and resulted in small but significant effects on specific cardiovascular risk factors. [Copyright &y& Elsevier]

It is expected that a dietary intervention based on the traditional Mediterranean food pattern should be associated with a reduction in fast-food consumption but this has never been tested before. We assessed the impact of a 12-week dietary intervention, promoting the adoption of a Mediterranean food pattern, on fast-food consumption among seventy-one healthy women aged between 30 and 65 years. The dietary intervention consisted of two group sessions and seven individual sessions with a dietitian. To determine the Mediterranean dietary score (MedScore) and fast-food consumption, an FFQ was administered. During the 12-week intervention, the MedScore significantly increased (from 21.1 (SD 3.6) units at baseline to 28.6 (SD 4.4) units at week 12, P < 0.0001), while the fast-food consumption significantly decreased (from 51.7 (SD 46.4) g/d at baseline to 20.5 (SD 18.2) g/d at week 12, P < 0.0001). Moreover, women who had a higher consumption of fast food at baseline decreased their fast-food consumption to the most (r - 0.50, P < 0.0001). When four subgroups were formed on the basis of median values of Medscore and fast-food consumption changes, it was found that only the subgroup of women which increased the most their MedScore and decreased the most their fast-food consumption experienced a significant decrease in BMI (P < 0.01). In conclusion, a dietary intervention promoting the Mediterranean food pattern led to a decrease in fast-food consumption among healthy women even if it was not a specific target of the intervention. Dietary strategies for increasing intake of healthy foods may be a useful approach for decreasing intake of less healthy foods.

Research on the lateral line of fish has mainly focused on the detection of oscillating objects. Yet many fish are able to track vortex wakes that arise from other fish. It is not yet known what the sensory input from a wake looks like and how fish can extract relevant information from it. We present a mathematical model to determine how vortices stimulate the canal lateral line and verify it by neuronal recordings. We also show how the information about the orientation of a vortex ring is captured by the lateral-line sensors so as to enable fish to follow a vortex street.