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Full-Text Articles in Psychology
Many Labs 2: Investigating Variation In Replicability Across Samples And Settings, Richard A. Klein, Michelangelo Vianello, Susan L. O'Donnell, Et Al
Many Labs 2: Investigating Variation In Replicability Across Samples And Settings, Richard A. Klein, Michelangelo Vianello, Susan L. O'Donnell, Et Al
Faculty Publications - Psychology Department
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 samples and settings. Each protocol was administered to approximately half of 125 samples that comprised 15,305 participants from 36 countries and territories. Using the conventional criterion of statistical significance (p < .05), we found that 15 (54%) of the replications provided evidence of a statistically significant effect in the same direction as the original finding. With a strict significance criterion (p < .0001), 14 (50%) of the replications still provided such evidence, a reflection of the extremely highpowered design. Seven (25%) of the replications yielded effect sizes larger than the original ones, and 21 (75%) yielded effect sizes smaller than the original ones. The median comparable Cohen’s ds were 0.60 for the original findings and 0.15 for the replications. The effect sizes were small (< 0.20) in 16 of the replications (57%), and 9 effects (32%) were in the direction opposite the direction of the original effect. Across settings, the Q statistic indicated significant heterogeneity in 11 (39%) of the replication effects, and most of those were among the findings with the largest overall effect sizes; only 1 effect that was near zero in the aggregate showed significant heterogeneity according to this measure. Only 1 effect had a tau value greater than .20, an indication of moderate heterogeneity. Eight others had tau values near or slightly above .10, an indication of slight heterogeneity. Moderation tests indicated that very little heterogeneity was attributable to the order in which the tasks were performed or whether the tasks were administered in lab versus online. Exploratory comparisons revealed little heterogeneity between Western, educated, industrialized, rich, and democratic (WEIRD) cultures and less WEIRD cultures (i.e., cultures with relatively high and low WEIRDness scores, respectively). Cumulatively, variability in the observed effect sizes was attributable more to the effect being studied than to the sample or setting in which it was studied.
Improving Implicit Beliefs And Expectations In Academic Achievement For Postsecondary Students With Disabilities, Kelly B.T. Chang
Improving Implicit Beliefs And Expectations In Academic Achievement For Postsecondary Students With Disabilities, Kelly B.T. Chang
Faculty Publications - Psychology Department
In this article, the author introduces the sociocognitive theory of implicit theories of intelligence (developed by Carol S. Dweck and her colleagues) to the field of rehabilitation, and analyzes disability issues in postsecondary academic achievement within this framework. This sociocognitive theory highlights the utility of the social model of disability. People hold two types of implicit beliefs about intelligence. An entity belief can lead to helplessness and negative self-concepts in the face of failure, because it focuses on labels and stable traits. An incremental belief leads to greater resilience in the face of failure by focusing on strategy and effort …