A study of grouped failure time data and the misapplication of recurrent event modeling

Clinical trials often assess whether or not subjects have a disease at predetermined follow-up times. When the response of interest is a recurrent event, a subject may respond at multiple follow-up times over the course of the study. Alternatively, when the response of interest is an irreversible event, a subject is typically only observed until the time at which the response is first detected. However, some recent studies have recorded subjects responses at follow-up times after an irreversible event is initially observed. This study compares how existing models perform when failure time data are treated as recurrent events.     

Race,risk, and American religious groups' views of Nazi Germany in 1935

What explains American religious groups' views of Nazi Germany before the U.S. entered the Second World War? Using a comparative-historical approach, we employ a novel set of data on 25 of America's most prominent religious denominations to answer this question. We find that two factors were crucial in explaining religious elite discourse about Hitler in the U.S. in 1935: whether leaders believed in white supremacy and whether their denominations were incumbents or challengers in the American religious field. Our findings underscore the growing theoretical consensus that racial resentment is key to support for authoritarianism and call attention to religious groups' complicity in its growth, both active and passive.     

Longitudinal Change in Adolescent Depression and Anxiety Symptoms from before to during the COVID-19 Pandemic

This study aimed to examine changes in depression and anxiety symptoms from before to during the first 6 months of the COVID-19 pandemic in a sample of 1,339 adolescents (9–18 years old, 59% female) from three countries. We also examined if age, race/ethnicity, disease burden, or strictness of government restrictions moderated change in symptoms. Data from 12 longitudinal studies (10 U.S., 1 Netherlands, 1 Peru) were combined. Linear mixed effect models showed that depression, but not anxiety, symptoms increased significantly (median increase = 28%). The most negative mental health impacts were reported by multiracial adolescents and those under ‘lockdown’ restrictions. Policy makers need to consider these impacts by investing in ways to support adolescents’ mental health during the pandemic.     

The missing link: the role of social work schools and evidence-based practice

The translation and adoption of evidence-based practice principles has proved to be more difficult than researchers anticipated. Schools of social work are in a unique position to support this process within their home communities. Using the evidence-based practice process steps outlined by previous researchers, this article identifies specific strategies that schools of social work can adopt to support their broader communities as they attempt to adopt and sustain empirically supported interventions.     

Are curriculum decisions based on the evidence? How social work faculty members make choices in curriculum decisions

An important step in translating evidence-based practice and empirically supported interventions into large-scale service improvements is to develop an understanding of practitioners' education and training in these practices. This understanding begins with discovering the factors that influence the decision-making process by social work faculty regarding curriculum content for master's level social work programs. This exploratory study uses quantitative and qualitative survey data to examine the decision-making process used by 42 master's level social work programs to select the models of direct practice taught in their master's level social work programs, and whether evidence-based practice and research evidence influences those decisions. We investigate faculty perceptions of curriculum effectiveness and discuss implications of our findings for social work educators making content and organization decisions regarding master's level social work curriculum.     

Racial Segregation and School Poverty in the United States, 1999–2016

Race and Social Problems - Research over the past decade suggests that racial segregation appears to have the largest implications for students’ achievement when linked to racial differences...     

Infants Extract Frequency Distributions from Variable Approximate Numerical Information

Previous research shows that infants represent approximate number: After habituation to a constant numerosity (e.g., eight dots), 6‐month‐old infants dishabituate to a novel numerosity (e.g., 16 dots). However, numerical information in the real world is far more variable and rarely offers repeated presentations of a single quantity. Instead, we often encounter quantities in the form of distributions around a central tendency. It remains unknown whether infants can represent frequency distributions from this type of distributed numerical input. Here, we asked whether 6‐month‐old infants can represent distributions of large approximate numerosities. In two experiments, we first familiarized infants to sequences of dot collections with varying numerosities. For half the infants, the sequence contained a unimodal frequency distribution, with numerosities centered around a single mean, and for the other half, it contained a bimodal frequency distribution of numerosities with two numerical peaks. We then tested infants with alternating or constant numerosities. Infants who had been familiarized to a unimodal distribution looked longer at alternating numerosities than constant numerosities (experiments 1 and 2), whereas infants who had been familiarized to a bimodal distribution looked longer at constant numerosities (Exp. 2). These findings suggest that infants can spontaneously extract frequency distributions from distributed numerical input.     

I Don't Like the Tone of Your Voice: Infants Use Vocal Affect to Socially Evaluate Others

Infants can make social judgments about characters by visually observing their interactions with others (e.g., Hamlin, Wynn & Bloom, Nature, 2007, 450, 557). Here, we ask whether infants can form similar judgments about potential social partners based solely on their tone of voice. In Experiment 1, we presented 10.5‐month‐olds with two visually neutral puppets. One puppet spoke in a positive affect and the other spoke in a negative affect. When the puppets were placed within reach of the infants, infants selected the formerly positive puppet. This preference disappeared when the voices were paired with nonsocial objects (Experiment 2). In Experiment 3, 10.5‐month‐olds were once again exposed to the same emotionally negative and positive voices. However, no visual characters were present. At test, infants’ visual orientation controlled how long they heard the neutral versions of each voice. Here, infants listened longer to the neutral voice of the formerly positive speaker. That is, just as in Experiment 1, infants’ preferences for the emotionally neutral test stimuli were shaped by their earlier exposure to emotionally charged recordings of that voice. Our findings provide convergent evidence to suggest that infants possess sophisticated social evaluation abilities, preferring to interact with prosocial over antisocial others.