Positive Main Effect Research Articles

Maternal and paternal parenting: The role of interparental positivity and negativity from a dyadic perspective

Using dyadic data (couple N = 1,423) from the Fragile Families and Child Wellbeing Study (at child age of 5 and 9), this study examined how interparental positivity and negativity reported by mothers and fathers are associated with maternal and paternal parenting. The moderating role of parents’ participation in early care and education (ECE) programs (i.e., workshops, information sessions) was further tested in this association. Parents’ own and partners’ interparental positivity were associated with more frequent parent-child activities four years later. Parenting stress was mainly predicted by parents’ own perceptions of their interparental relationships. Parents’ ECE participation did not moderate any association between interparental relationships and parenting, although it had a positive main effect on parent-child activities for both mothers and fathers. Results highlight the importance of accounting for broader family contexts in understanding parenting.

The Impact of Information Presentation and Cognitive Dissonance on Processing Systematic Review Summaries: A Randomized Controlled Trial on Bicycle Helmet Legislation.

Background: Summaries of systematic reviews are a reference method for the dissemination of research evidence on the effectiveness of public health interventions beyond the scientific community. Motivated reasoning and cognitive dissonance may interfere with readers’ ability to process the information included in such summaries. Methods: We conducted a web experiment on a panel of university-educated North Americans (N = 259) using a systematic review of the effectiveness of bicycle helmet legislation as a test case. The outcome variables were the perceived tentativeness of review findings and attitude toward bicycle helmet legislation. We manipulated two types of uncertainty: (i) deficient uncertainty (inclusion vs. non-inclusion of information on limitations of the studies included in the review) and (ii) consensus uncertainty (consensual findings showing legislation effectiveness vs. no evidence of effectiveness). We also examined whether reported expertise in helmet legislation and the frequency of wearing a helmet while cycling interact with the experimental factors. Results: None of the experimental manipulations had a main effect on the perceived tentativeness. The presentation of consensual efficacy findings had a positive main effect on the attitude toward the legislation. Self-reported expertise had a significant main effect on the perceived tentativeness, and exposing participants with reported expertise to results showing a lack of evidence of efficacy increased their favorable attitude toward the legislation. Participants’ helmet use was positively associated with their attitude toward the legislation (but not with perceived tentativeness). Helmet use did not interact with the experimental manipulations. Conclusions: Motivated reasoning and cognitive dissonance influence a reader’s ability to process information contained in a systematic review summary.

Understanding the Role of Proactive Personality in Occupational Health and Safety at Oil and Gas Service Stations in Accra

This study explored occupational health and safety among fuel pump attendants at selected oil and gas service stations in Accra, Ghana. Respondents completed a questionnaire battery on proactive personality, safety climate perceptions, safety compliance, and safety participation. Regression models showed that safety climate perceptions and proactive personality each had significant positive main effects on safety compliance and safety participation. Moreover, we found that the positive relationship between safety climate perceptions and safety compliance, and between safety climate perceptions and safety participation was weaker when proactivity was high than when it was low. The theoretical and managerial implications of the results are discussed.

The association of intensity and duration of non-pharmacological interventions and implementation of vaccination with COVID-19 infection, death, and excess mortality: Natural experiment in 22 European countries

BackgroundCritical questions remain regarding the need for intensity to continue NPIs as the public was vaccinated. We evaluated the association of intensity and duration of non-pharmaceutical interventions (NPIs) and vaccines with COVID-19 infection, death, and excess mortality in Europe. MethodsData comes from Our Word in Data. We included 22 European countries from January 20, 2020, to May 30, 2021. The time-varying constrained distribution lag model was used in each country to estimate the impact of different intensities and duration of NPIs on COVID-19 control, considering vaccination coverage. Country-specific effects were pooled through meta-analysis. ResultsThis study found that high-intensity and long-duration of NPIs showed a positive main effect on reducing infection in the absence of vaccines, especially in the intensity above the 80th percentile and lasted for 7 days (RR = 0.93, 95% CI: 0.89–0.98). However, the adverse effect on excess mortality also increased with the duration and intensity. Specifically, it was associated with an increase of 44.16% (RR = 1.44, 95% CI: 1.27–1.64) in the excess mortality under the strict intervention (the intensity above the 80th percentile and lasted for 21 days). As the vaccine rollouts, the inhibition of the strict intervention on cases growth rate was increased (RR dropped from 0.95 to 0.87). Simultaneously, vaccination also alleviated the negative impact of the strict intervention on excess mortality (RR decreased from 1.44 to 1.25).Besides, maintaining the strict intervention appeared to more reduce the cases, as well as avoids more overall burden of death compared with weak intervention. ConclusionsOur study highlights the importance of continued high-intensity NPIs in low vaccine coverage. Lifting of NPIs in insufficient vaccination coverage may cause increased infections and death burden. Policymakers should coordinate the intensity and duration of NPIs and allocate medical resources reasonably with widespread vaccination.

The effects of various levels of distillers dried grains with solubles (DDGS) and a dacitic (rhyolitic) tuff breccia on pellet production rate and durability

Distillers dried grain with solubles (DDGS) has been associated with a reduction in pellet production efficiency and quality in animal diets, whereas some minerals may improve pellet efficiency by scouring the surface of the pelleting die holes, reducing friction. The objective of this study was to understand the relationship between DDGS and a dacitic tuff breccia (DTB) based on pellet production rate and pellet durability index (PDI). The experiment was conducted in a complete block design, with a factorial arrangement 5 × 2, and repeated on 2 d. DDGS levels (0, 4, 8, 12, and 16%) and DTB (0 and 0.25%) were the main effects. Interactions between DDGS and DTB were observed for production rate throughout the study, however, the effects were not consistent between days. DTB inclusion improved the production rate of diets containing 12% DDGS on day 1 ( P = 0.010), whereas, on day 2, this positive effect was observed in DTB diets with 4 and 8% DDGS compared to their respective controls ( P = 0.001). DTB inclusion had a positive main effect on PDI on day 1 ( P > 0.015), however, this result was not observed on day 2 ( P > 0.314). Increasing levels of DDGS in the diet had a positive influence on PDI throughout the experiment ( P < 0.001). The results showed the potential of DTB in improving pellet production rate when dietary DDGS inclusion ranged from 4% to 12%.

Systemic shock, cultural differences, and customer satisfaction: lessons from student perceptions in shift to non-classroom education during initial phases of pandemic

ABSTRACT This study captured perceptions of students immediately following the covid pandemic campus lockdowns of March, 2020. It is a cross-cultural sample of 407 students in USA, India, and United Arab Emirates. Met expectations are the theoretical base. Analysis was done using PLS-SEM. Positive main effects in all three markets point to the value of the front-line instructor interface at such a time. Their efforts were directly related to met expectations in the form of positive advocacy and university image to the external stakeholders. Cultural dimensions of Individualism, power distance, and universalism appeared influential in low tolerance for personal inconvenience in the USA. Self-efficacy also moderated in USA. Lower self-efficacy was associated with weaker perceptions of positive university image. Implications for marketing point to the essential qualities of front-line instructors. A varied approach is called for, particularly with the generally less forgiving Western audience that differ East to West.

Evaluation of Combinations of Nudging, Pricing, and Labeling Strategies to Improve Diet Quality: A Virtual Grocery Store Experiment Employing a Multiphase Optimization Strategy.

Several intervention strategies have been shown to improve diet quality. However, there is limited evidence on the increase in effectiveness that may be achieved through select combinations of these strategies. This study aimed to identify an effective multicomponent intervention to improve diet quality of a grocery basket by applying a Multiphase Optimization Strategy framework and testing various combinations of four promising strategies using a fully functional web-based grocery store: (i) front-of-pack food labels and real-time feedback of the healthiness of the shoppers' grocery basket, (ii) a tax, (iii) ordering products by a nutritional quality score, and (iv) healthier substitute offers. We conducted a hypothetical shopping study (N = 756) with a randomized full factorial design (16 conditions) to estimate main and interaction effects of the four interventions. The "food labels & real-time feedback" and "ordering" strategies had significantly positive main effects on overall diet quality of the shopping basket (both at p < .001). We found no effects on diet quality for the "tax" and "healthier substitute offers." None of the two-way interaction effects for different strategies on overall diet quality and nutrients were significant. Having "food labels & real-time feedback" and "ordering" simultaneously seemed to be more effective at improving diet quality, compared to having only one of these interventions. These results suggest that a combination of food labels with real-time feedback and ordering interventions can be part of a promising multicomponent strategy to improve diet quality in online shopping platforms. ClinicalTrials.gov NCT04632212.

Intensity and content of private tutoring lessons during German secondary schooling: effects on students’ grades and test achievement

Private supplementary tutoring is a widespread phenomenon. However, evidence that private tutoring has positive effects on academic achievement or about the specific conditions of successful private tutoring is rare. Adapting Carroll’s (1963) model for school learning to private tutoring, we expected to find positive effects of tutoring duration, tutoring intensity, and students’ motivation to attend private tutoring. In a sample of eighth-grade students in German secondary schools (N = 8510, 18.6% currently being tutored), we conducted regression analyses with multiple covariates and did not find a positive main effect of private tutoring attendance in any of the school subjects examined. Moreover, within the subsamples of tutored students, we were not able to identify positive effects of tutoring duration, tutoring intensity, tutoring content (such as a focus on homework completion, test preparation, or study behavior), or students’ motivation to attend private tutoring. Given these disillusioning findings, we primarily derive suggestions for future research.

Moderating role of social capital on the effect of financial behavior on financial inclusion

The need for improved institutional interventions aimed at increasing access to financial services by small and medium enterprises (SMEs) has been emphasized. Complimenting these efforts, this study proposes that building social networks capable of informing requisite financial behaviors would facilitate the financial inclusion of SMEs co-existing in business clusters. This study aimed to empirically test the moderating influence of collective action, bonding, trust, and bridging on the effect of financial behavior on financial inclusion. Using a sample of 311 owners/managers of small and medium scale businesses in sub-urban clusters in South-Eastern Nigeria, the hierarchical moderated regression analysis was used to test the hypotheses of the study. Results show a positive main effect of financial behavior on financial inclusion (βf = 0.162; t (304) = 1.503; p &amp;amp;lt; 0.05). Also, collective action (βfca = 0.201; t (304) = 6.906; p &amp;amp;lt; 0.05) and bridging (βfbr = 0.201; t (304) = 6.906; p &amp;amp;lt; 0.05) had positive moderating effects, bonding (βfb = 0.032; t (304) = 1.423; p &amp;amp;gt; 0.05) and trust (βft = 0.014; t (304) = 0.9609; p &amp;amp;gt; 0.05) were statistically insignificant. For policy implications, social virtues such as bridging and collective action are more veritable tools for financial inclusion than the personal virtues of trust and bonding and should be factored into economic and social intervention being deployed by institutions interested in meeting the banking/financial needs of businesses.

Associations among maternal perfluoroalkyl substance levels, fetal sex-hormone enzymatic gene polymorphisms, and fetal sex hormone levels in the Hokkaido study

Prenatal sex hormones affect fetal growth; for example, prenatal exposure to low levels of androgen accelerates female puberty onset. We assessed the association of perfluoroalkyl substances (PFASs) in maternal sera and infant genotypes of genes encoding enzymes involved in sex steroid hormone biosynthesis on cord sera sex hormone levels in a prospective birth cohort study of healthy pregnant Japanese women (n = 224) recruited in Sapporo between July 2002 and October 2005. We analyzed PFAS and five sex hormone levels using liquid chromatography-tandem mass spectrometry. Cytochrome P450 (CYP) 17A1 (CYP17A1 rs743572), 19A1 (CYP19A1 rs10046, rs700519, and rs727479), 3β-hydroxysteroid dehydrogenase type 1 (HSD3B1 rs6203), type 2 (HSD3B2 rs1819698, rs2854964, and rs4659175), 17β-hydroxysteroid dehydrogenase type 1 (HSD17B1 rs605059, rs676387, and rs2676531), and type 3 (HSD17B3 rs4743709) were analyzed using real-time PCR. Multiple linear regression models were used to establish the influence of log10-transformed PFAS levels and infant genotypes on log10-transformed sex steroid hormone levels. When the interaction between perfluorooctanesulfonate (PFOS) levels and female infant genotype CYP17A1 (rs743572) on the androstenedione (A-dione) levels was considered, the estimated changes (95 % confidence intervals) in A-dione levels against PFOS levels, female infant genotype CYP17A1 (rs743572)-AG/GG, and interaction between them showed a mean increase of 0.445 (0.102, 0.787), mean increase of 0.392 (0.084, 0.707), and mean reduction of 0.579 (0.161, 0.997) (Pint = 0.007), respectively. Moreover, a female-specific interaction with testosterone levels was observed. A-dione and T levels showed positive main effects and negative interaction with PFOS levels and the female infant CYP17A1 genotype.

Discrimination and Quality of Life Among Marriage-Squeezed Men in Rural China: Unexpected Functions of Structural and Functional Social Support

In rural China, marriage-squeezed men are more likely to experience discrimination than other males. Using data collected from Anhui Province in China on marriage-squeezed men’s quality of life, this study examines the influence of discrimination on the quality of life and the buffering effect of social support among this cohort. The results show that discrimination is a strong stressor, and its negative consequences on marriage-squeezed men’s quality of life are difficult to eliminate, with social support having a limited buffering effect. Meanwhile, structural support and functional support had different functions on quality of life of marriage-squeezed men experiencing discrimination. Whereas structural support had no significant main effect on quality of life, interaction with relatives and neighbors had a buffering effect on the relationship between discrimination and quality of life. In contrast, functional support, particularly from family members, relatives, and neighbors, had positive main effects on quality of life; however, no buffering effect was observed. The findings affirm that discrimination must be addressed as an independent and important factor. Promoting marriage-squeezed men’s social ties outside the family can reduce the damaging effect of discrimination, while future research needs to seek other protective resources to maintain the men’s quality of life.

Foundations of strategic flexibility: focus on cognitive diversity and structural empowerment

PurposeThe purpose of this paper is to investigate the effects of cognitive diversity and structural empowerment on strategic flexibility in the context of business performance.Design/methodology/approachStructural equation modeling (SEM) is used to statistically test the data that were collected from health-care organizations located in the USA.FindingsSEM reveals the positive main effect of cognitive diversity on strategic flexibility, the moderating effect of structural empowerment on the effect of cognitive diversity on strategic flexibility and performance and the mediating effect of strategic flexibility on the joint effect of cognitive diversity and structural empowerment on business performance.Originality/valueThe study reveals that diversity in cognitive resources and workplace empowerment can jointly support business performance via strategic flexibility. The paper explains that this positive effect can take place because the two factors jointly enable business organizations to find better internal applications for new relevant information, thus allowing firms to quickly reorganize their internal resources in a way that leads to better performance.

How Satirical News Impacts Affective Responses, Learning, and Persuasion: A Three-Level Random-Effects Meta-Analysis

Satirical news blends entertainment with information and opinion. Satire can thus impact various audience responses, such as positive and negative affect, learning, and persuasion. However, the presence and size of these communicative effects have been debated. We conducted a three-level random-effects meta-analysis on the impact of satirical news ( k = 70, Ntotal = 22,969). We compared satirical news to two reference categories: (1) control messages with no or irrelevant information, and (2) regular news with similar informational content. Results demonstrate that satirical (vs. regular) news increased positive affective responses and message discounting. By contrast, satire increased learning compared to control messages, but not compared to regular news. We find limited evidence for a positive main effect of satire on persuasion. However, we find different moderating effects, indicating that persuasion effects are stronger for Republicans (vs. other voters), student (vs. general-population) samples, TV satire (vs. online and print satire), and for satire targeting social actors.

Positive youth development in Belize: a cluster-randomised trial of Positive Action

Aggressive, violent, and disruptive behaviour among Belize youth is disproportionately high. The present study evaluated a school-based positive youth development program (Positive Action) using a clustered RCT. The aim of the study sought to examine post-treatment positive youth development competencies (i.e. social-emotional character development, peer affiliation, substance abuse and violence tendencies, moral beliefs, pro-social behaviour, and school self-esteem) in comparison to students in a randomly assigned control group of schools. Participants (n = 4575) were from 24 schools drawn at random in the Belize District with outcomes assessed for two cohorts (Standard 1−3, and Standard 4−6) of children. The intervention addressed different ecologies through teacher, counsellor, and family training along with activities to promote school-wide implementation. Positive main effects for engagement in positive behaviour were observed across primary school Standards 1−6 (ages 7–12 years), indicated by substantial explained slope and intercept variance.

Efficacy of the social-emotional learning foundations curriculum for kindergarten and first grade students at risk for emotional and behavioral disorders

Researchers have shown that children's social-emotional growth is inextricably connected to academic learning. We developed the Social-Emotional Learning Foundations (SELF) intervention, a Grade K-1 curriculum merging social-emotional learning (SEL) and literacy instruction, to promote language supported self-regulation, specifically for primary grade children at early risk for emotional or behavioral difficulties. We report findings from a pretest-posttest cluster randomized efficacy trial with one fixed between-subjects factor to test the effects of teacher-delivered SEL instruction against those of business as usual (BAU). We recruited 163 kindergarten (K) and 141 first grade teachers from 52 schools across 11 school districts within one southeastern state. Our student sample (n = 1154) consisted of 627 kindergarteners and 527 first graders identified by teachers as at risk for internalizing or externalizing emotional and behavioral problems using the Systematic Screening for Behavioral Disorders; 613 of these students participated in the SELF condition and 541 participated in the BAU condition. We randomly assigned schools to SELF or BAU and used a multilevel model with three levels (i.e., children, classrooms, schools) to analyze data on subscales of six (four teacher-report and two direct) assessments related to self-regulation, social-emotional learning, social-emotional vocabulary, and general behavioral functioning. We found positive main effects of SELF compared to BAU on all but one measure, with effect sizes (calculated using Hedges' g) ranging from 0.20 to 0.65. Findings provide evidence for guiding future SEL intervention research and informing practice to improve student outcomes, particularly for children at risk for behavior problems.

The impact of inclusive fashion advertising with plus-size models on female consumers: The mediating role of brand warmth

ABSTRACT This study investigates the effectiveness of inclusive advertising featuring both plus-size models and straight-size models on consumers’ responses. By building on the Brands as Intentional Agents Framework (BIAF), the study also investigates the mechanism of the positive effect of including plus-size models on brand performance. For this study, a between-subjects design of model body size (diverse versus straight only) and a moderator of consumer body size (plus versus straight) were used; a multivariate analysis of covariance was conducted, along with a mediation analysis, to test the proposed hypotheses. The results indicated that inclusive advertisements depicting models with diverse body sizes had a positive main effect on brand attitude and an indirect effect on brand attitude and purchase intention. Brand warmth mediated the positive effect of diverse body sizes on brand attitude and purchase intention. This study contributes to the literature on body image by demonstrating the effectiveness of including plus-size models on two levels of consumer responses – brand attitude and purchase intention – and by demonstrating the mechanism of brand warmth. This study also informs brand managers as to how embracing plus-size models can benefit brand performance.

Substance use, current criminal justice involvement, and lifetime suicidal thoughts and behaviors history: The moderating role of thwarted belonging.

Criminal justice involvement, substance use, and suicide pose significant public health concerns; however, the unique and synergistic effects of these experiences among high-risk individuals remain understudied. We hypothesized positive main effects for alcohol-related severity, drug-related severity, current criminal justice involvement, and thwarted belonging (TB) on suicide ideation history (SIH) and suicide attempt history (SAH) and that TB would moderate these associations. We report on cross-sectional analyses of self-report assessments completed by 824 adult residential substance use patients. Multinomial logistic regression analyses indicated that as alcohol- and drug-related severity increases, the probability of SIH and SAH increases; however, TB was only associated with a higher SIH probability. Significant two-way interactions (current criminal justice involvement*TB; alcohol-related severity*TB) indicated that (1) those high in TB with current criminal justice involvement were more likely to report a SIH than those without current criminal justice involvement; and (2) those low in TB and alcohol-related severity had the lowest SAH probability, whereas those low in TB and high in alcohol-related severity had the highest SAH probability. The unique and combined effects of interpersonal and contextual risk factors may improve suicide risk conceptualization and assessment, and allow for tailored treatments for this high-risk population.

Enhanced skeletal muscle glycogen repletion after endurance exercise is associated with higher plasma insulin and skeletal muscle hexokinase 2 protein levels in mice: comparison of level running and downhill running model.

To identify factors that influence post-exercise muscle glycogen repletion, we compared the glycogen recovery after level running with downhill running, an experimental model of impaired post-exercise glycogen recovery. Male Institute of Cancer Research (ICR) mice performed endurance level running (no inclination) or downhill running (-5° inclination) on a treadmill. In Experiment 1, to determine whether these two types of exercise resulted in different post-exercise glycogen repletion patterns, tissues were harvested immediately post-exercise or 2 days post-exercise. Compared to the control (sedentary) group, level running induced significant glycogen supercompensation in the soleus muscle at 2 days post-exercise (p = 0.002). Downhill running did not induce glycogen supercompensation. In Experiment 2, mice were orally administered glucose 1 day post-exercise; this induced glycogen supercompensation in soleus and plantaris muscle only in the level running group (soleus: p = 0.005, plantaris: p = 0.003). There were significant positive main effects of level running compared to downhill running on the plasma insulin (p = 0.017) and C-peptide concentration (p = 0.011). There was no difference in the glucose transporter 4 level or the phosphorylated states of proteins related to insulin signaling and metabolism in skeletal muscle. The level running group showed significantly higher hexokinase 2 (HK2) protein content in both soleus (p = 0.046) and plantaris muscles (p =0.044) at 1 day after exercise compared to the downhill running group. Our findings suggest that post-exercise skeletal muscle glycogen repletion might be partly influenced by plasma insulin and skeletal muscle HK2 protein levels.

“Kicking the Can down the Street”: Social Policy, Intimate Partner Violence, and Homicide during the Opioid Crisis

Background Research has established a strong, positive correlation between homicides and substance use and also between homicides and intimate partner violence (IPV). Additionally, there is a well-known, robust, positive relationship between substance use and IPV. Focusing on the opioid crisis and using county-level panel data, this study investigates the possibility that opioid pill prescription trends, IPV, and homicide are intertwined in a complex, interdependent relationship. Objectives: With an eye toward integrated social policy, this study explores the relationships among and between opioid pill distribution patterns, IPV arrests, and homicide arrests within the United States between 2006 and 2012. Methods: Using county-level panel data from several established federal datasets, a series of longitudinal mixed-effects models regress homicide arrests onto the number of pills within each county, IPV arrests, and other relevant controls. Results: While IPV shares a strong, positive main effect relationship with homicide arrests, opioid pill volume is not significantly related to homicides. However, opioid pill volume within a county significantly attenuates the relationship between IPV and homicide, indicating that pills, IPV, and homicides share a complex, interwoven relationship. Conclusion: While the non-significant main effect of opioid pills suggests that opioids are not consequential for homicide, the highly significant interaction between pills and IPV indicates the opposite. Acknowledging the interwoven link between opioids, IPV, and homicide may be of importance when attempting to develop individual programs aimed at addressing these social problems. Well intentioned, unidimensional policies aimed at reducing opioids or IPV may be unknowingly impacting other social problems.

Exposure to bullying behaviours, resilience, and return to work self-efficacy in patients on or at risk of sick leave.

The study investigated relationships between exposure to bullying behaviours, return to work self-efficacy (RTW-SE) and resilience, and if resilience moderates the bullying-RTW-SE relationship among patients on sick leave or at risk of sick leave due to common mental disorders (CMD). A sample of 675 patients treated in an outpatient clinic was analysed using regressions and moderation analyses by employing SPSS and the Process macro SPSS supplement. The results showed a negative relationship between exposure to bullying behaviours and RTW-SE. There was also a positive main effect for resilience, as patients with high resilience score significantly higher on RTW-SE than patients with low resilience irrespective of levels of bullying. Further, the resilience sub-dimension personal resilience moderated the bullying-RTW-SE relationship, while the sub-dimension interpersonal resilience did not. Patients high on personal resilience showed relatively lower RTW-SE scores when exposed to bullying behaviours, compared to those that were not bullied with high personal resilience levels. Hence, one should take note of the fact that even if resilience may strengthen RTW-SE, bullying is an adverse event which particularly affects individuals who present with relatively high levels of resilience resources, at least when it comes to RTW-SE.