CINXE.COM

Just a moment...

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "www.journals.uchicago.edu",cType: 'managed',cRay: '92b855ec885b9c5d',cH: 'QM_iNMYwVMngqvrmMiBZDkpUJ3MaGPKwLQvBBdFIaOg-1743848665-1.2.1.1-7VqWS6U8jl864QqcFzRtj6yiQIKLlJfpr1.GHC5.OvZzY5NtOap6LFgozZjAdZvK',cUPMDTk: "\/doi\/10.2307\/3210794?__cf_chl_tk=m58VU0r4rl.zfsbE0HL5SzaqK1vB59tNgoliWpag6Ak-1743848665-1.0.1.1-qTeioRjVX_vYgXB77WBmxe2bN4jjlm.PhWZs6_cV6ZA",cFPWv: 'g',cITimeS: '1743848665',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/doi\/10.2307\/3210794?__cf_chl_f_tk=m58VU0r4rl.zfsbE0HL5SzaqK1vB59tNgoliWpag6Ak-1743848665-1.0.1.1-qTeioRjVX_vYgXB77WBmxe2bN4jjlm.PhWZs6_cV6ZA",md: "Lna9Qdq6rs7TVJnNwtTTXBSNwi7wL9HM0a.xvfLj40s-1743848665-1.2.1.1-HADZYCNcIpXmK2WbmF7gzV673PRsSyNt8hk6MKrwgvFYqDSl8R6uYQxjfPsaHMzV7W2MCcsn3I8IkmqpqAmWYBrNiaXa4LmNFEStRIimi3NkXpBSoCa8wGpb.F8.mtR7Aucma4kqMHQceR.pNOLrtQ.zRqIxhUbc6p3HmSLJTstFG8MZwKIPvdSOe80LVEm0PYso3q_Oj7EGRzpUy.IzWR51ra4MtBJ8GiLYM4RYODU7GSkpMmAH2egBZFV7OABn6RJeZEKKBvDd1JZEylohQMCCM1AYO.e7Pih_Zspv7DJOSY0Wu72s82wy0Cr_Nxxkpq7w.ObOBfgvI_Kjs49ffKp.Z9xIN9qb.DzFx8915Uk2StZDvD90C41frXqBiUzfM7Gm5BBn8jUTMatAoCzRBT4CleDVQcdyp5yE5Fzqv41QRJYaMVGUXTfWV14HicKyg5c0AfSYz4nwRyWO66o28ZO1yxNfjps4XWb4XdMwJElK2Ccm_02ii0cXzhgHE8xk1nZ2SdaD88V3IuaFsURHCdlxyuw.RUiEPlP9TcdU_VEZX4HLv3La9OxYkNvDNVLZFPxqvYPqZQE174T71Z5iZAwa7A6167Uf0ED2hel1zm6UCtsIeTaruSGsrFc0Wv23o.Kug02hrnFO3sXicLxtggH0JtZ2dXDuOnl7SqbsyqRjKzbeD8qmzg6LaaVYphiG_dfEgpAttpGpylk6jp5PeitdGrXWoTVbU1eTWzMNvchybvGilXZB87CE7_PYFXXxmxT.ZE8WVm1n_YmuOPeiUi29Nno7d1YeVlRPQ6pN85FR6OSP22ua8jIURto8FiqkMq7ZTs7Vh21Ec0gcaS.ff8iPA7kzHBt2B_cMjY8wLE.glB.OAnNE3i7Yh7g5DpC1bLDLfFrjjdOktj5UJva1zjU7eHT.obUM0unVX8n0wfqygJ_Xnmu_f3OBth_bpxpRcQSl8EBCap3AXeKL03Y9g4LWJVvvlrEbTk9VeJpEZ01loDRU_4lJAro0VEGQgM.9d8CtDj8B21H8o_TEsSJhMeWYYrPmyivaGKqpeNairXhLnSKfq1zqeVryVheDM9ZUdpT0YkjLji0ObMPsjcnU_zDWtUc5vfXht9fH6jACoGqCw52rrJX0uXD8lnTPdBw1SzOLEde_vL67dqjKflhPgHRnI.FKvEN5VJHE_Lt_eFv_j.scQ9npwhCJzG8BaRlSutKG1rgCB7UorkBRsk5t.OA4ENwTaHy4oGS777tpINKFVTspOvDGC.0NXnpyWiduFo.CdQXcgHkOpHNTI8d1CQ",mdrd: ".gA0liJ6K2BlqwHz8Kam7gSiczEz7S3UGegYQy2Eoq4-1743848665-1.2.1.1-YeicHF7r_HSdpYJ7M9pPzgWmQ2ap3Cov6b6SspmPM9KqAQ2GhkKp6xlk9fqS616cdccuGmUQNQtGYt7LXKcQN.4CaJsAArbXVLFv3wrE6NUVVnO_WHF4qjg2PdHZOKhyg10j0YF7sctDp0jE0unVLJWL8PWgrqcXyagQlWkh0yinu.tr3A3nUzCqBTQ5ufjX_zbw_AmmnHIb0eyzvbuPEdt4NAQo.OFuNZAwR0R0c4fUYKcUtsbXuxlqYM7wBneeqCSCsm9lBZNPG.bzxiRsAwdwNI6LUB2PrKsDEyRTP0ahZl0_e3mxB7oNweLBsIH36esOd4LMsMDaLxA17a_xiBWKe4zyB2rofNUrapKykqqcp4HfntubVr6gJP0vvTvR2Ah_kthjyuXoHsvReQEvxnqZKUxwY2.UNLpFmx7N13VMegrGiHZWP9EXcJMslzr610UWGFVfbg9TZZNVRHvJ0E72aLBVpYp8U245S.XT5kpeKcNW4RUOgjAmqMiHjvm5CCaMkuTSEKXFNgprggUFN4B6NVUEb_DWKcPxqrTYnx4LtxszvGSyG6TK_sXm5ZmNnpvfAy.19xzkkyDWyXryJ3dYVMTXsXd2w.jSrv9o7n0kCW.fsLuKLNNKU9C5lXvNhIzDMU_XkUEi.Bee3BsVEo44NKpM8Vd9xFKNRb7n6R_hYh1aHibbHSPjrXGNBb2CunrceBWNiYhenU.eHtZakin8DF5T4b34MF4kvovB.enpeI4A8X3iigjt8aFteZBbodgtFi4a6kuxY4v.FmxpuY_h1jKBb.7dTePH3tlmVmV2tQqmti7rAhAlmYo9j.27oYn5hme3cOdqFzt6_vRTikrm0IFbsbZ9FSOK2gDRu1clSlaut4WW1MNgWn9eBGQ13bqTk_phjyaUmMJciIdHZX_vrfHbzunzzFDbeizPXAT65jonCrQIVQUfZjS45URLj2uSVgySzxQ4bmU_ubd4.ZQX1tfgpxCUnGxdjVWXiLOKoEkDjybyPtTDpE.oZha1zlYP5ahEX29IYyfLPOTfNHAlX1mWeknhzsWTeAZE97gaLbRiqN1lu_fP1MzTo9gQDAJRqZpUIeUTjC7xkVsEBQ.en1Y.rd9z7S_J7GySzZO0MvLwlepCKJyhaxwMnML23XFkA7n3olVWv0jOPNQguHRdW5vsdgNcDiBOZ65QXzkdYas2uawEAFAGE4FyuzY7zhIZoV__LQURjvQ2bDOEx.6lAMoejZSj5EYuOPopOXU4sRxT591kmGmG5wRFtdN4ozQP1KXp_YlWsOtHKyEJZ4vD7zAGyXnHWnHw5L8B_TvJrsNzufmsiUIFD6AfAJEBbu6wbcHLDzaoPFT7Bx8YbKUJk865.HLga4jbhfZ67JIDZk1RAuLv.k6750VJkiEULXTVNuoqdKf0w8NmWuajYLrxiiIvEktZZEoxzyMwaw2imOi1Vo4I2cCEB08pFvcGzjlwPnqaDyJ.HALSXtH7AJTJkNfCLDT8es6Fj1vbeOiJiHjXO4yCHnDNN078o0S.IuRmrEsAzSqBeChlqQzGBQsCfHgVaWPbAhcvkXNlG6dCPEZRhs5vV.QrxVj49_nISb4BrQqkeSEXMFK_hLNQkylIjAGM8yYffF66WCEUy6lcKRFJ6KAGDJYZ_xJXN9dzyGEBYJUb3h7tjEj1akEFm2tQR.T6zNurB1uMAHMawAnoibHzco0q4mV0hwIMFeBhyehvNVHgQKVnIy0O1JZPYKP0WeDnNwGkl.riA1AIEo4iTgZIiHqAYphq9vZMrLeWxsXcWSpNd1xfWeKhuuvyD8PJr77h5yAJByyE.HN4tLe7f9S.3wD_HENgvjx7FYztT6M5GUqQ3xeUFCs.mlroPDyg4sEpChZTNhsnPdZ6G7MJ3eb.1vk.CJt33NjAsSKwTl2mjGZI0NvRr9zCZkdDrJsGRF.hxIARnjXq1a7WGy2malO22d64T2a_PMz27YmW2Fn9EsGX1j83vtLkRz9apTMc0OZasoavZTlXPFqPA_NSHEdhKvIlnamJ4FpNRMACEE2MhHpHpJaGIzqmqK8fstVBJYHwPmcetAVMl4jtcbU"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=92b855ec885b9c5d';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/doi\/10.2307\/3210794?__cf_chl_rt_tk=m58VU0r4rl.zfsbE0HL5SzaqK1vB59tNgoliWpag6Ak-1743848665-1.0.1.1-qTeioRjVX_vYgXB77WBmxe2bN4jjlm.PhWZs6_cV6ZA" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>