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    Tytuł:
    Same data, different analysts : variation in effect sizes due to analytical decisions in ecology and evolutionary biology
    Autorzy:
    Thawley, Christopher J.
    Ferreira-Arruda, Thalita
    Rugemalila, Deusdedith
    Taff, Conor Claverie
    Hager, Heather A.
    Schmoll, Tim
    Ke, Alison
    Fisher, David N.
    Payo-Payo, Ana
    Mos, Benjamin
    Abbey-Lee, Robin N.
    Martin, Charles A.
    Manrique-Garzon, Laura Milena
    Michelangeli, Marcus
    Shapiro, Julie Teresa
    Rosenberg, Michael S.
    Schroeder, Julia
    Cox, Murray P.
    Novotny, Jessie Lanterman
    Santos, Leticia Pereira
    Kačergytė, Ineta
    Muraina, Taofeek Olatunbosun
    Griffith, Frances J.
    Riva, Federico
    Paterson, John Harold
    García-Cervigón, Ana I.
    Camerlenghi, Ettore
    Macphie, Kirsty H.
    Schmidt, Marcus
    Youngflesh, Casey
    Palacio, Facundo Xavier
    Campbell, Sara E.
    Skupien, Fabrício Luiz
    Keogan, Katharine
    Perry, Kayla I.
    Bell, Kristian
    Good, Megan Kate
    Harrison, Natasha Dean
    Paquet, Matthieu
    Zilio, Giacomo
    Pottier, Patrice
    Organ, Chris L.
    Döbert, Timm Fabian
    Greenler, Skye M.
    Marchand, Philippe
    Smith, Jeremy A.
    Elmore, Jared Alan
    Turnell, Biz R.
    Jucker, Tommaso
    Gandy, Sara L.
    Verrelli, Brian C.
    Atkins, Jeff W.
    Razafindratsima, Onja H.
    Vélez, Juliana
    Johnsson, Martin
    Crouch, Connor Davidson
    de Sousa, Alexandra Allison
    Martin, Dominic Andreas
    Tanentzap, Andrew J.
    Walker, Xanthe J.
    Wolfson, David William
    Bradham, Jennifer
    Ross, Jessica
    Atkinson, Joe
    Barrett, Meghan
    Gould, Elliot
    Shearer, Caroline L.
    Wood, Andrew
    Law, Alan
    Kaltz, Oliver
    Gliksman, Daniel
    Drobniak, Szymon
    Hagan, James G.
    van Oordt, Francis
    Hsu, Bin-Yan
    Billman, Peter D.
    de Lima, Daniela Oliveira
    Blake, Shannon
    Finch, Elizabeth A.
    Kothari, Shan
    Griffith, Daniel M.
    Herrera-Chaustre, María Laura
    Slinn, Heather Lea
    Ramananjato, Veronarindra
    Zimmer, Cédric
    Meiners, Scott J.
    Martinig, April Robin
    Goslee, Sarah C.
    Campos, Leonardo L. F.
    Gilles, Marc
    Duffy, Alexandra Grace
    Baker, Christopher M.
    Vergara-Florez, Diana Carolina
    Santostefano, Francesca
    Tompkins, Emily M.
    Dunn, Robert P.
    Dobson, Adam J.
    Salazar, Stephen M.
    Eberhart-Hertel, Luke
    Kochan, David P.
    Takola, Elina
    Géron, Charly
    Freund, Cathryn A.
    Blake, Charlie K.
    Chik, Heung Ying Janet
    Telford, Richard J.
    Magellan, Kit
    Zimmerman, Gregory Mark
    Bertram, Michael Grant
    Luquet, Martin
    Roast, Michael James
    Nooten, Sabine S.
    Hamilton, Daniel G.
    D’Amelio, Pietro B.
    Goldspiel, Harrison B.
    Mortensen, Jennifer
    Vanderwel, Mark C.
    Yen, Jian D. L.
    Niemelä, Petri
    McCallum, Erin S.
    Malm, Lisa E.
    Trlica, Andrew
    Christie, Alec Philip
    Mair, Magdalena M.
    Weaver, Ryan J.
    Salmón, Pablo
    Caravaggi, Anthony
    Harris, Jonathan Philo
    Elsherif, Mahmoud Medhat
    Vitali, Valerio
    Murphy, Penelope Wrenn
    Aloni, Irith
    Havird, Justin Chase
    Sánchez-Tójar, Alfredo
    English, Holly M.
    Pedersen, Karen Marie
    Clark, Bethany L.
    Walker, Jeffrey
    Brand, Jack A.
    Schtickzelle, Nicolas
    Zitomer, Rachel A.
    Kusch, Jillian M.
    Larson, Courtney L.
    Haesen, Stef
    Chunco, Amanda J.
    Moiron, Maria
    Heaton, Andrew J.
    Schilling, Hayden T.
    Killion, Alexander K.
    Lagisz, Malgorzata
    Bulla, Martin
    Tarjuelo, Rocío
    Hasnain, Sarah Syedia
    Sollmann, Rahel
    Fidler, Fiona
    Merkling, Thomas
    Grebe, Nicholas M.
    Román-Palacios, Cristian
    Frank, Graham S.
    Gomes, Dylan G. E.
    Kelly, Clint D.
    Simón, Diego
    Olin, Agnes Birgitta
    Bradfer-Lawrence, Tom
    Manhart, Michael
    Whelan, Shannon
    Villamil, Nora
    Cressman, Kimberly A.
    Alcaraz, Carles
    Griffioen, Maaike
    Fernandez-Juricic, Esteban
    Cardoso, Pedro
    Russell, Avery L.
    Jung, Martin
    Girndt, Antje
    Fiorenza, Evan A.
    Bordes, Camille Nina Marion
    McCauley, Mark
    Saccone, Patrick
    Gratton, Paolo
    Tortorelli, Claire Marie
    Crotti, Marco
    Dobler, Ralph
    Fourcade, Yoan
    Griffith, Simon C.
    Rocha, Felipe Pereira
    Nelli, Luca
    Sutton, Guy F.
    Ensminger, David C.
    Beltrán, Iván
    Martin, Jake Mitchell
    Keppeler, Friedrich Wolfgang
    Boyd, Melissa Anna
    Gosnell, J. Stephen
    Waryszak, Pawel
    Brengdahl, Martin I.
    Lindsay, Shane
    Chuang, Angela
    Forstmeier, Wolfgang
    Tidau, Svenja
    Fieberg, John
    Johnson, Douglas H.
    Perez, Grégoire
    Lauterbur, M. Elise
    Kuppler, Jonas
    Mäntylä, Elina
    Thierry, Hugo
    Catanach, Therese A.
    Vanderwel, K. Michelle
    Bonisoli-Alquati, Andrea
    Sadeh, Asaf
    Iranzo, Esperanza C.
    Aguirre, Luis A.
    L’Herpiniere, Kiara
    Parker, Timothy H.
    Smith, Grania Polly
    Whitney, Kaitlin Stack
    Lembrechts, Jonas J.
    Choy, Emily Sarah
    Léandri-Breton, Don-Jean
    Bonnet, Timothée
    Dutta, Trishna
    Dunning, Jamie
    Garretson, Alexis C.
    Mandeville, Caitlin P.
    Iverson, Erik N. K.
    Nightingale, Josh
    Still, Shannon Michael
    Abbott, Jessica K.
    Parker, Darren James
    Ruuskanen, Suvi
    Fontaine, Amélie
    Scott, Drew A.
    Vanderwolf, Karen J.
    Ostevik, Kate L.
    Lievens, Eva J. P.
    Botterill-James, Thomas
    Berauer, Bernd J.
    Mammola, Stefano
    Geary, William L.
    Jimoh, Saheed Olaide
    Duncan, Alison B.
    Fraser, Hannah S.
    White, Rachel Louise
    Ge, Xuezhen
    Van de Vondel, Stijn
    Chen, Xuan
    Carroll, Charles J. W.
    Rowland, Freya E.
    Grames, Eliza M.
    Nakagawa, Shinichi
    Pascall, David J.
    Covernton, Garth A.
    Thomson, Jacqueline
    Pasquarella, Valerie J.
    Swallow, Ben
    Bliard, Louis
    Stuber, Erica F.
    Bello, Suleiman Kehinde
    Lauck, Katherine S.
    Grossman, Jake J.
    Urban, Lara
    Proulx, Raphaël
    Weller, Daniel L.
    Roche, Dominique G.
    Larkin, Daniel J.
    Boyle, Sarah A.
    Korsten, Peter
    Contina, Andrea
    Proulx, Michael J.
    Van Eeckhoven, Jens
    Ferguson, Stephen M.
    Sharma, Nitika
    Marshall, Benjamin Michael
    Nolazco, Sergio
    Schultz, Nick L.
    Kim, Dongmin
    Lalla, Kristen Marianne
    Ernst, Ulrich Rainer
    Rennison, Diana J.
    Güncan, Ali
    Riyahi, Sepand
    Moreira, Bruno
    Iannarilli, Fabiola
    Wedegärtner, Ronja E. M.
    Yanco, Scott W.
    Randimbiarison, Finaritra Tolotra
    Vollering, Julien
    Schneider, Adam C.
    Vesk, Peter A.
    McNew, Sabrina M.
    Arekar, Kunal
    Nilsonne, Gustav
    Bose, Aneesh P. H.
    Walter, Jonathan A.
    Gannon, Dustin G.
    Howard, Tanner J.
    Scroggie, Michael Peter
    Doherty, Tim S.
    Sitvarin, Michael I.
    Vieira, Marcus Vinícius
    Altschul, Drew
    Fuentes-Lillo, Eduardo
    Pruett, Jessica L
    Schrock, Allie E.
    Sales, Kris
    MacLeod, Ross
    Jorna, Jesse
    Bussière, Luc
    van der Wal, Jessica Eva Megan
    Opis:
    Although variation in effect sizes and predicted values among studies of similar phenomena is inevitable, such variation far exceeds what might be produced by sampling error alone. One possible explanation for variation among results is differences among researchers in the decisions they make regarding statistical analyses. A growing array of studies has explored this analytical variability in different fields and has found substantial variability among results despite analysts having the same data and research question. Many of these studies have been in the social sciences, but one small “many analyst” study found similar variability in ecology. We expanded the scope of this prior work by implementing a large-scale empirical exploration of the variation in effect sizes and model predictions generated by the analytical decisions of different researchers in ecology and evolutionary biology. We used two unpublished datasets, one from evolutionary ecology (blue tit, Cyanistes caeruleus, to compare sibling number and nestling growth) and one from conservation ecology (Eucalyptus, to compare grass cover and tree seedling recruitment). The project leaders recruited 174 analyst teams, comprising 246 analysts, to investigate the answers to prespecified research questions. Analyses conducted by these teams yielded 141 usable effects (compatible with our meta-analyses and with all necessary information provided) for the blue tit dataset, and 85 usable effects for the Eucalyptus dataset. We found substantial heterogeneity among results for both datasets, although the patterns of variation differed between them. For the blue tit analyses, the average effect was convincingly negative, with less growth for nestlings living with more siblings, but there was near continuous variation in effect size from large negative effects to effects near zero, and even effects crossing the traditional threshold of statistical significance in the opposite direction. In contrast, the average relationship between grass cover and Eucalyptus seedling number was only slightly negative and not convincingly different from zero, and most effects ranged from weakly negative to weakly positive, with about a third of effects crossing the traditional threshold of significance in one direction or the other. However, there were also several striking outliers in the Eucalyptus dataset, with effects far from zero. For both datasets, we found substantial variation in the variable selection and random effects structures among analyses, as well as in the ratings of the analytical methods by peer reviewers, but we found no strong relationship between any of these and deviation from the meta-analytic mean. In other words, analyses with results that were far from the mean were no more or less likely to have dissimilar variable sets, use random effects in their models, or receive poor peer reviews than those analyses that found results that were close to the mean. The existence of substantial variability among analysis outcomes raises important questions about how ecologists and evolutionary biologists should interpret published results, and how they should conduct analyses in the future.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
      Wyświetlanie 1-2 z 2

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