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Tax reform and local government: An assessment of Reagan's plan
In: NLC policy working papers
Keep Them Talking
In: Social studies: a periodical for teachers and administrators, Band 80, Heft 4, S. 141-141
ISSN: 2152-405X
FAMILY COURT SERVICES: WHAT IS THE FUTURE?
In: Family court review: publ. in assoc. with: Association of Family and Conciliation Courts, Band 26, Heft 2
ISSN: 1744-1617
A Morphological Analysis of Stone Circles from the Copper Mountain Project, Shoshoni, Wyoming
In: Plains anthropologist, Band 28, Heft 102, S. 71-80
ISSN: 2052-546X
Creating a Commercial Dispute Resolution Center in the Palestinian Territories
In: Dispute Resolution Journal, May-July 2005
SSRN
Approaching the true self: Promotion focus predicts the experience of authenticity
In: Journal of research in personality, Band 78, S. 165-176
ISSN: 0092-6566
Coffee Consumption among Alcoholics as a Function of Time Hospitalized
In: International journal of the addictions, Band 16, Heft 2, S. 253-262
Investigating Variation in Replicability: A "Many Labs" Replication Project
In: Social psychology, Band 45, Heft 3, S. 142-152
ISSN: 2151-2590
Although replication is a central tenet of science, direct replications are rare in psychology. This research tested variation in the replicability of 13 classic and contemporary effects across 36 independent samples totaling 6,344 participants. In the aggregate, 10 effects replicated consistently. One effect – imagined contact reducing prejudice – showed weak support for replicability. And two effects – flag priming influencing conservatism and currency priming influencing system justification – did not replicate. We compared whether the conditions such as lab versus online or US versus international sample predicted effect magnitudes. By and large they did not. The results of this small sample of effects suggest that replicability is more dependent on the effect itself than on the sample and setting used to investigate the effect.
Commentaries and Rejoinder on
In: Social psychology, Band 45, Heft 4, S. 299-311
ISSN: 2151-2590
While direct replications such as the "Many Labs" project are extremely valuable in testing the reliability of published findings across laboratories, they reflect the common reliance in psychology on single vignettes or stimuli, which limits the scope of the conclusions that can be reached. New experimental tools and statistical techniques make it easier to routinely sample stimuli, and to appropriately treat them as random factors. We encourage researchers to get into the habit of including multiple versions of the content (e.g., stimuli or vignettes) in their designs, to increase confidence in cross-stimulus generalization and to yield more realistic estimates of effect size. We call on editors to be aware of the challenges inherent in such stimulus sampling, to expect and tolerate unexplained variability in observed effect size between stimuli, and to encourage stimulus sampling instead of the deceptively cleaner picture offered by the current reliance on single stimuli.
Many Labs 2:investigating variation in replicability across samples and settings
In: Klein , R A , Vianello , M , Hasselman , F , Adams , B G , Adams , R B , Alper , S , Aveyard , M , Axt , J R , Babalola , M T , Bahník , Š , Batra , R , Berkics , M , Bernstein , M J , Berry , D R , Bialobrzeska , O , Binan , E D , Bocian , K , Brandt , M J , Busching , R , Rédei , A C , Cai , H , Cambier , F , Cantarero , K , Carmichael , C L , Ceric , F , Chandler , J , Chang , J-H , Chatard , A , Chen , E E , Cheong , W , Cicero , D C , Coen , S , Coleman , J A , Collisson , B , Conway , M A , Corker , K S , Curran , P G , Cushman , F , Dagona , Z K , Dalgar , I , Dalla Rosa , A , Davis , W E , de Bruijn , M , De Schutter , L , Devos , T , de Vries , M , Doğulu , C , Dozo , N , Dukes , K N , Dunham , Y , Durrheim , K , Ebersole , C R , Edlund , J E , Eller , A , English , A S , Finck , C , Frankowska , N , Freyre , M-Á , Friedman , M , Galliani , E M , Gandi , J C , Ghoshal , T , Giessner , S R , Gill , T , Gnambs , T , Gómez , Á , González , R , Graham , J , Grahe , J E , Grahek , I , Green , E G T , Hai , K , Haigh , M , Haines , E L , Hall , M P , Heffernan , M E , Hicks , J A , Houdek , P , Huntsinger , J R , Huynh , H P , IJzerman , H , Inbar , Y , Innes-Ker , Å H , Jiménez-Leal , W , John , M-S , Joy-Gaba , J A , Kamiloğlu , R G , Kappes , H B , Karabati , S , Karick , H , Keller , V N , Kende , A , Kervyn , N , Knežević , G , Kovacs , C , Krueger , L E , Kurapov , G , Kurtz , J , Lakens , D , Lazarević , L B , Levitan , C A , Lewis , N A , Lins , S , Lipsey , N P , Losee , J E , Maassen , E , Maitner , A T , Malingumu , W , Mallett , R K , Marotta , S A , Međedović , J , Mena-Pacheco , F , Milfont , T L , Morris , W L , Murphy , S C , Myachykov , A , Neave , N , Neijenhuijs , K , Nelson , A J , Neto , F , Lee Nichols , A , Ocampo , A , O'Donnell , S L , Oikawa , H , Oikawa , M , Ong , E , Orosz , G , Osowiecka , M , Packard , G , Pérez-Sánchez , R , Petrović , B , Pilati , R , Pinter , B , Podesta , L , Pogge , G , Pollmann , M M H , Rutchick , A M , Saavedra , P , Saeri , A K , Salomon , E , Schmidt , K , Schönbrodt , F D , Sekerdej , M B , Sirlopú , D , Skorinko , J L M , Smith , M A , Smith-Castro , V , Smolders , K C H J , Sobkow , A , Sowden , W , Spachtholz , P , Srivastava , M , Steiner , T G , Stouten , J , Street , C N H , Sundfelt , O K , Szeto , S , Szumowska , E , Tang , A C W , Tanzer , N , Tear , M J , Theriault , J , Thomae , M , Torres , D , Traczyk , J , Tybur , J M , Ujhelyi , A , van Aert , R C M , van Assen , M A L M , van der Hulst , M , van Lange , P A M , van 't Veer , A E , Vásquez- Echeverría , A , Ann Vaughn , L , Vázquez , A , Vega , L D , Verniers , C , Verschoor , M , Voermans , I P J , Vranka , M A , Welch , C , Wichman , A L , Williams , L A , Wood , M , Woodzicka , J A , Wronska , M K , Young , L , Zelenski , J M , Zhijia , Z & Nosek , B A 2018 , ' Many Labs 2 : investigating variation in replicability across samples and settings ' , Advances in Methods and Practices in Psychological Science , vol. 1 , no. 4 , pp. 443-490 . https://doi.org/10.1177/2515245918810225
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 high-powered 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). ...
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Many Labs 2: Investigating Variation in Replicability Across Samples and Settings
In: Klein , R A , Vianello , M , Hasselman , F , Adams , B G , Adams , R B , Alper , S , Aveyard , M , Axt , J R , Babalola , M T , Bahník , Š , Batra , R , Berkics , M , Bernstein , M J , Berry , D R , Bialobrzeska , O , Binan , E D , Bocian , K , Brandt , M J , Busching , R , Rédei , A C , Cai , H , Cambier , F , Cantarero , K , Carmichael , C L , Ceric , F , Chandler , J , Chang , J-H , Chatard , A , Chen , E E , Cheong , W , Cicero , D C , Coen , S , Coleman , J A , Collisson , B , Conway , M A , Corker , K S , Curran , P G , Cushman , F , Dagona , Z K , Dalgar , I , Dalla Rosa , A , Davis , W E , de Bruijn , M , De Schutter , L , Devos , T , de Vries , M , Doğulu , C , Dozo , N , Dukes , K N , Dunham , Y , Durrheim , K , Ebersole , C R , Edlund , J E , Eller , A , English , A S , Finck , C , Frankowska , N , Freyre , M , Friedman , M , Galliani , E M , Gandi , J C , Ghoshal , T , Giessner , S R , Gill , T , Gnambs , T , Gómez , Á , González , R , Graham , J , Grahe , J E , Grahek , I , Green , E G T , Hai , K , Haigh , M , Haines , E L , Hall , M P , Heffernan , M E , Hicks , J A , Houdek , P , Huntsinger , J R , Huynh , H P , Ijzerman , H , Inbar , Y , Innes-ker , Å H , Jiménez-leal , W , John , M , Joy-gaba , J A , Kamiloğlu , R G , Kappes , H B , Karabati , S , Karick , H , Keller , V N , Kende , A , Kervyn , N , Knežević , G , Kovacs , C , Krueger , L E , Kurapov , G , Kurtz , J , Lakens , D , Lazarević , L B , Levitan , C A , Lewis , N A , Lins , S , Lipsey , N P , Losee , J E , Maassen , E , Maitner , A T , Malingumu , W , Mallett , R K , Marotta , S A , Međedović , J , Mena-pacheco , F , Milfont , T L , Morris , W L , Murphy , S C , Myachykov , A , Neave , N , Neijenhuijs , K , Nelson , A J , Neto , F , Lee Nichols , A , Ocampo , A , O'donnell , S L , Oikawa , H , Oikawa , M , Ong , E , Orosz , G , Osowiecka , M , Packard , G , Pérez-sánchez , R , Petrović , B , Pilati , R , Pinter , B , Podesta , L , Pogge , G , Pollmann , M M H , Rutchick , A M , Saavedra , P , Saeri , A K , Salomon , E , Schmidt , K , Schönbrodt , F D , Sekerdej , M B , Sirlopú , D , Skorinko , J L M , Smith , M A , Smith-castro , V , Smolders , K C H J , Sobkow , A , Sowden , W , Spachtholz , P , Srivastava , M , Steiner , T G , Stouten , J , Street , C N H , Sundfelt , O K , Szeto , S , Szumowska , E , Tang , A C W , Tanzer , N , Tear , M J , Theriault , J , Thomae , M , Torres , D , Traczyk , J , Tybur , J M , Ujhelyi , A , Van Aert , R C M , Van Assen , M A L M , Van Der Hulst , M , Van Lange , P A M , Van 't Veer , A E , Vásquez- Echeverría , A , Ann Vaughn , L , Vázquez , A , Vega , L D , Verniers , C , Verschoor , M , Voermans , I P J , Vranka , M A , Welch , C , Wichman , A L , Williams , L A , Wood , M , Woodzicka , J A , Wronska , M K , Young , L , Zelenski , J M , Zhijia , Z & Nosek , B A 2018 , ' Many Labs 2: Investigating Variation in Replicability Across Samples and Settings ' , Advances in Methods and Practices in Psychological Science , vol. 1 , no. 4 , pp. 443-490 . https://doi.org/10.1177/2515245918810225
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 high-powered 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.
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