Four experiments investigated infants' and adults' knowledge of the identity of objects in a causal sequence of events. In Experiments 1 and 2, 18- and 22-month-olds in the visual habituation procedure were shown a 3-step causal chain event in which the relation between an object's part (dynamic or static) and its causal role was either consistent…

This study examines historical variation in age 18 to 26 binge drinking trajectories, focusing on differences in both levels of use and rates of change (growth) across cohorts of young adults over 3 decades. As part of the national Monitoring the Future Study, over 64,000 youths from the high school classes of 1976 to 2004 were surveyed at…

Process praise (i.e., praise for effort) facilitates childhood persistence. However, less is known about the mechanism by which process praise influences persistence in infancy. Here, we propose that well-timed process praise reinforces the link between effort and success, thus promoting persistence in young children. In Experiment 1, U.S. infants…

Knowing the temporal direction of causal relations is critical for producing desired outcomes and explaining events. Existing evidence suggests that children start to grasp that causes must precede their effects (the temporal priority principle) by age 3; however, whether younger children also understand this has, to our knowledge, not previously…

As children increasingly interact with digital voice assistants, it is important to know whether they treat these devices as reliable information sources. Two studies investigated children's trust in and recall of statements made by a novel voice assistant and a human informant. In Study 1, children ages 4-5 (M[subscript age] = 5.05; 20 boys, 20…

When semantically-related photos appear with true-or-false trivia claims, people more often rate the claims as true compared to when photos are absent--"truthiness." This occurs even when the photos lack information useful for assessing veracity. We tested whether truthiness changed in magnitude as a function of participants' age in a…

The seventh phase of this longitudinal study investigated whether children born through third-party assisted reproduction experienced psychological problems, or difficulties in their relationship with their mothers, in early adulthood. The impact of disclosure of their biological origins, and quality of mother-child relationships from age 3…

Many caregivers wonder when to talk to children about social inequality and racism, often expressing the belief that children do not pay attention to race or inequity. Here, across 5-9-year-old American children (n = 159, M[subscript age] = 7.44; 51.6% female, 47.2% male, 1.2% nonconforming or not provided; 59.1% White, 23.3% racial-ethnic…

The present study examined what kind of parenting best supports toddlers' self-control in the context of poverty. Parents and toddlers (52% female; M[subscript age] = 2.60 years) in 117 families (35% White, 25% Black, 22% Latinx, 15% Multiracial, and 3% Asian; M family income = $1,845/month) engaged in structured interaction tasks, and toddlers…

The COVID-19 pandemic profoundly affected American families and children, including through the closure or change in the nature of their care and school settings. As the pandemic has persisted, many children remain in remote schooling and those attending in-person childcare or school have contended with unpredictable closures. This study…

Most infants exhibit an attentional bias for faces and fearful facial expressions. These biases reduce toward the third year of life, but little is known about the development of the biases beyond early childhood. We used the same methodology longitudinally to assess attention disengagement patterns from nonface control pictures and faces…

As internalizing and externalizing problems often co-occur, the current study utilized a longitudinal dataset of 784 at-risk children (predominantly from low-income families and academically at-risk; 52.6% male) followed yearly from Grade 1 to Grade 12 to: (a) explore the heterogeneity in the codevelopment patterns of internalizing and…

Dysregulation of diurnalcortisol rhythms is often seen among children exposed to early adversity and has been associated with a variety of negative physical and mental health outcomes. The present study examined whether two indicators of deprivation, sociodemographic burden and observed parental insensitivity, were associated with child diurnal…

Throughout childhood and adolescence, humans experience marked changes in cortical structure and cognitive ability. Cortical thickness and surface area, in particular, have been associated with cognitive ability. Here we ask the question: What are the time-related associations between cognitive changes and cortical structure maturation.…

Noncognitive factors have gained attention in recent years as potential intervention targets for academic achievement improvement in students. Two notable facets, intelligence mindset and grit, have been of particular interest. Both have been shown to consistently improve educational outcomes, although little work has focused on reading ability.…