Kowal M.Sorokowski P.Dinić B.M.Pisanski K.Gjoneska B.Frederick D.A.Pfuhl G.Milfont T.L.Bode A.Aguilar L.García F.E.Roberts S.C.Abad-Villaverde B.Kavčič T.Miroshnik K.G.Ndukaihe I.L.G.Šafárová K.Valentova J.V.Aavik T.Blackburn A.M.Çetinkaya H.Duyar I.Guemaz F.Ishii T.Kačmár P.Natividade J.C.Nussinson R.Omar-Fauzee M.S.B.Pacquing M.C.T.Ponnet K.Wang A.H.Yoo G.Amin R.Pirtskhalava E.Afhami R.Arvanitis A.Duyar D.A.Besson T.Boussena M.Can S.Can A.R.Carneiro J.Castro R.Chubinidze D.Čunichina K.Don Y.Dural S.Etchezahar E.Fekih-Romdhane F.Frackowiak T.Moharrampour N.G.Yepes T.G.Grassini S.Jovic M.Kertechian K.S.Khan F.Kobylarek A.Križanić V.Lins S.Mandzyk T.Manunta E.Martinac Dorčić T.Muthu K.N.Najmussaqib A.Otterbring T.Park J.H.Pavela Banai I.Perun M.Reyes M.E.S.Röer J.P.Şahin A.Sahli F.Z.Šakan D.Singh S.Smojver-Azic S.Söylemez S.Spasovski O.Studzinska A.Toplu-Demirtas E.Urbanek A.Volkodav T.Wlodarczyk A.Yaakob M.F.M.Y.Yusof M.R.Zumárraga-Espinosa M.Zupančič M.Sternberg R.J.2024-07-222024-07-22202400040002http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/11561Love is a phenomenon that occurs across the world and affects many aspects of human life, including the choice of, and process of bonding with, a romantic partner. Thus, developing a reliable and valid measure of love experiences is crucial. One of the most popular tools to quantify love is Sternberg’s 45-item Triangular Love Scale (TLS-45), which measures three love components: intimacy, passion, and commitment. However, our literature review reveals that most studies (64%) use a broad variety of shortened versions of the TLS-45. Here, aiming to achieve scientific consensus and improve the reliability, comparability, and generalizability of results across studies, we developed a short version of the scale—the TLS-15—comprised of 15 items with 5-point, rather than 9-point, response scales. In Study 1 (N = 7,332), we re-analyzed secondary data from a large-scale multinational study that validated the original TLS-45 to establish whether the scale could be truncated. In Study 2 (N = 307), we provided evidence for the three-factor structure of the TLS-15 and its reliability. Study 3 (N = 413) confirmed convergent validity and test–retest stability of the TLS-15. Study 4 (N = 60,311) presented a large-scale validation across 37 linguistic versions of the TLS-15 on a cross-cultural sample spanning every continent of the globe. The overall results provide support for the reliability, validity, and cross-cultural invariance of the TLS-15, which can be used as a measure of love components—either separately or jointly as a three-factor measure. © The Author(s) 2023. corrected publication 2023.EnglishAll Open Access; Hybrid Gold Open AccessHumansLanguageLovePsychometricsReproducibility of ResultsSexual BehaviorSexual PartnersSurveys and Questionnairesarticleconsensusconvergent validityhumanhuman experimentlanguagemulticenter study (topic)reliabilitysystematic reviewlanguagelovepsychometryquestionnairereproducibilitysexual behaviorsexualityArticle10.1007/s10508-023-02702-7