We conducted preregistered replications of 28 classic and contemporary published findings with protocols that were peer reviewed in advance to examine variation in effect magnitudes across sample and setting. Each protocol was administered to approximately half of 125 samples and 15,305 total participants from 36 countries and territories. Using conventional statistical significance (p < .05), fifteen (54%) of the replications provided evidence in the same direction and statistically significant as the original finding. With a strict significance criterion (p < .0001), fourteen (50%) provide such evidence reflecting the extremely high powered design. Seven (25%) of the replications had effect sizes larger than the original finding and 21 (75%) had effect sizes smaller than the original finding. The median comparable Cohen’s d effect sizes for original findings was 0.60 and for replications was 0.15. Sixteen replications (57%) had small effect sizes (< .20) and 9 (32%) were in the opposite direction from the original finding. Across settings, 11 (39%) showed significant heterogeneity using the Q statistic and most of those were among the findings eliciting the largest overall effect sizes; only one effect that was near zero in the aggregate showed significant heterogeneity. Only one effect showed a Tau > 0.20 indicating moderate heterogeneity. Nine others had a Tau near or slightly above 0.10 indicating slight heterogeneity. In moderation tests, very little heterogeneity was attributable to task order, administration in lab versus online, and exploratory WEIRD versus less WEIRD culture comparisons. Cumulatively, variability in observed effect sizes was more attributable to the effect being studied than the sample or setting in which it was studied.

The relationships between subjective status and perceived legitimacy are important for understanding the extent to which people with low status are complicit in their oppression. We use novel data from 66 samples and 30 countries ( N = 12,788) and find that people with higher status see the social system as more legitimate than those with lower status, but there is variation across people and countries. The association between subjective status and perceived legitimacy was never negative at any levels of eight moderator variables, although the positive association was sometimes reduced. Although not always consistent with hypotheses, group identification, self‐esteem, and beliefs in social mobility were all associated with perceived legitimacy among people who have low subjective status. These findings enrich our understanding of the relationship between social status and legitimacy.

The COVID‐19 context has created the most severe disruption to education systems in recent history. Its impact on child development was estimated comparing two cohorts of 4‐ to 6‐year‐old Uruguayan children: control ( n = 34,355, 48.87% girls) and COVID cohort ( n = 30,158, 48.95% girls) assessed between 2018 and 2020 in three waves, by a routinely administered school readiness instrument in public preschools. Ethnicity information is not available. For the COVID cohort, losses were observed in Motor and Cognitive development, Attitudes towards learning, and Internalizing behavior (range 0.13 – 0.27 SD). Losses were less pronounced among children from higher socioeconomic schools. These results extend the literature on the consequences of the pandemic on learning and early child development.

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Temporal psychology constructs are an individual difference variable related to behavioral outcomes. Recent research has shown that there are different time attitude profiles based on different configurations of the six Adolescent and Adult Time Inventory-Time Attitude (AATI-TA) subscales. The objective of this study was to analyze the psychometric properties of AATI-TA scores in Uruguay and determine the existence of temporal profiles in this context. Participants were a convenience sample of 446 (36.5% males) adults in Uruguay with a mean age of 34.53 years (SD = 13.17, range 18–75 years). Participants completed a sociodemographic questionnaire, the AATI-TA, and questionnaires on intentions, behaviors, and attitudes towards healthy food consumption and physical activity. AATI-TA scores had good reliabilities (> .70). The six-factor solution was supported and invariance by gender and age group was established. We identified five profiles – Resilients, High Positives, Negatives, Present Negatives, and Moderate Positives – which were associated differently with healthy food consumption patterns. Negative profiles were related to higher levels of unhealthy food consumption.

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