{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T22:32:25Z","timestamp":1791325945803,"version":"4.3.1"},"reference-count":46,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2021,7,22]],"date-time":"2021-07-22T00:00:00Z","timestamp":1626912000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100000025","name":"National Institute of Mental Health","doi-asserted-by":"publisher","award":["R01 MH078829"],"award-info":[{"award-number":["R01 MH078829"]}],"id":[{"id":"10.13039\/100000025","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Developmental Psychobiology"],"published-print":{"date-parts":[[2021,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Frontal electroencephalography (EEG) alpha asymmetry (FAA), defined as the difference in frontal alpha power observed over the right and left frontal scalp regions, has been widely used in developmental research as a measure of multiple aspects of child behavior, such as temperament. Studies have used different equations to calculate FAA, which renders comparison of results across studies challenging. Furthermore, few studies have examined FAA's longitudinal stability across infancy and early childhood, which is a desirable feature of a temperament measure. We investigated the cross\u2010sectional and the longitudinal correlations of FAA values from four different equations to calculate FAA used in the literature. We used baseline EEG data from a longitudinal sample of 321 infants and 168 3\u2010year\u2010old children (149 of whom had data at both timepoints). Consistent with previous work, FAA values calculated using two commonly used equations were highly correlated with each other cross\u2010sectionally but not with values from a different equation that used log\u2010transformed relative power. The log\u2010transformed relative power FAA values were the only values that showed significant longitudinal stability. These findings suggest that researchers interested in FAA as a trait\u2010like measure in children should consider using the relative power equation that renders stability across ages.<\/jats:p>","DOI":"10.1002\/dev.22163","type":"journal-article","created":{"date-parts":[[2021,7,22]],"date-time":"2021-07-22T15:03:16Z","timestamp":1626966196000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":39,"title":["Using different methods for calculating frontal alpha asymmetry to study its development from infancy to 3 years of age in a large longitudinal sample"],"prefix":"10.1002","volume":"63","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2661-4417","authenticated-orcid":false,"given":"Katherine M.","family":"Vincent","sequence":"first","affiliation":[{"name":"Laboratories of Cognitive Neuroscience Division of Developmental Medicine Boston Children's Hospital  Boston Massachusetts USA"},{"name":"Center for Cognitive and Brain Health Department of Psychology Northeastern University  Boston Massachusetts USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wanze","family":"Xie","sequence":"additional","affiliation":[{"name":"Laboratories of Cognitive Neuroscience Division of Developmental Medicine Boston Children's Hospital  Boston Massachusetts USA"},{"name":"School of Psychological and Cognitive Sciences Peking University, China; and PKU\u2010IDG\/McGovern Institute for Brain Research, Peking University  China"},{"name":"Department of Pediatrics Harvard Medical School  Boston Massachusetts USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Charles A.","family":"Nelson","sequence":"additional","affiliation":[{"name":"Laboratories of Cognitive Neuroscience Division of Developmental Medicine Boston Children's Hospital  Boston Massachusetts USA"},{"name":"Department of Pediatrics Harvard Medical School  Boston Massachusetts USA"},{"name":"Graduate School of Education Harvard University  Cambridge Massachusetts USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,7,22]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.biopsycho.2004.03.007"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/1469\u20108986.3860912"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0954579419000853"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0048577201393174"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dcn.2016.03.004"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/psyp.12866"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jneumeth.2015.02.025"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1388\u20102457(01)00488\u20106"},{"key":"e_1_2_8_10_1","first-page":"566","volume-title":"The asymmetrical brain","author":"Coan J. 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