No abstract

Stated-preference research supports $17.2B in protections

Failures to replicate evidence of new discoveries have forced scientists to ask whether this unreliability is due to suboptimal implementation of optimal methods or whether presumptively optimal methods are not, in fact, optimal. This paper reports an investigation by four coordinated laboratories of the prospective replicability of 16 novel experimental findings using current optimal practices: high statistical power, preregistration, and complete methodological transparency. In contrast to past systematic replication efforts that reported replication rates averaging 50%, replication attempts here produced the expected effects with significance testing (p<.05) in 86% of attempts, slightly exceeding maximum expected replicability based on observed effect size and sample size. When one lab attempted to replicate an effect discovered by another lab, the effect size in the replications was 97% that of the original study. This high replication rate justifies confidence in rigor enhancing methods and suggests that past failures to replicate may be attributable to departures from optimal procedures.

This study identified affective and cognitive factors predicting American 6th, 8th, and 10th graders' civic orientation, defined here as feelings of effective community service, conceptualizations of citizenship, and participation in student government. Independent variables included measures of interpersonal trust, valuation of religion, and individualistic versus collective action attributions of responsibility for solving social problems. Interpersonal trust predicted four out of the five outcome variables. Individualistic attribution of social responsibility was a predictor of running for student government office, and collective action attribution was a predictor of conceptualizations of citizenship. Religious valuation also predicted conceptualizations of citizenship as well as feelings of effective community service. For the most part, grade level did not play a significant role in predicting youth's civic orientation. Results are discussed in terms of the literature on social capital and developmental theory.

Absent fathers, Fatherlessness, Child well-being,