Abraham, G. E., Chakmakjian, Z. H., Buster, J. E., & Marshall, J. R. (1975). Ovarian and adrenal contributions to peripheral androgens in hirsute women. Obstetrics and Gynecology, 46, 169–173.
Barr, D. J., Levy, R., Scheepers, C., & Tily, H. J. (2013). Random effects structure for confirmatory hypothesis testing: Keep it maximal. Journal of Memory and Language, 68(3), 255–278.
Basson, R. (2000). The female sexual response: A different model. Journal of Sex and Marital Therapy, 26(1), 51–65.
Basson, R., Brotto, L. A., Petkau, A. J., & Labrie, F. (2010). Role of androgens in women’s sexual dysfunction. Menopause, 17, 962–971.
Bates, D., Kliegl, R., Vasishth, S., & Baayen, H. (2015). Parsimonious mixed models. arXiv preprint arXiv:1506.04967.
Bates, D., Maechler, B. B., & Walker, S. (2015b). Fitting linear mixed-effects models using lme4. Journal of Statistical Software, 67(1), 1–48.
Bodenmann, G., Atkins, D. C., Schar, M., & Poffet, V. (2010). The association between daily stress and sexual activity. Journal of Family Psychology, 24, 271–279.
Boonekamp, J. J., Ros, A. H., & Verhulst, S. (2008). Immune activation suppresses plasma testosterone level: A meta-analysis. Biology Letters, 4, 741–744.
Booth, A., Granger, D., Mazur, A., & Kivlighan, K. (2006). Testosterone and social behavior. Social Forces, 85, 167–191.
Boozalis, A., Tutlam, N. T., Chrisman Robbins, C., & Peipert, J. F. (2016). Sexual desire and hormonal contraception. Obstetrics and Gynecology, 127, 563–572.
Bowman, C. P. (2014). Women’s masturbation: Experiences of sexual empowerment in a primarily sex-positive sample. Psychology of Women Quarterly, 38, 363–378.
Brennan, K. A., Clark, C. L., & Shaver, P. R. (1998). Self-report measurement of adult attachment. In J. A. Simpson (Eds.), Attachment theory and close relationships (pp. 46–76). New York, NY: Guilford Press.
Brotto, L. A. (2010a). The DSM diagnostic criteria for hypoactive sexual desire disorder in men. Journal of Sexual Medicine, 7, 2015–2030.
Brotto, L. A. (2010b). The DSM diagnostic criteria for hypoactive sexual desire disorder in women. Archives of Sexual Behavior, 39, 221–239.
Campbell, K. L., Schultheiss, O. C., & McClelland, D. C. (1999). A necessary adjustment of protocol for use of DPC coat-a-count total testosterone assay with saliva. Clinical Biochemistry, 32, 83–85.
Cappelletti, M., & Wallen, K. (2016). Increasing women’s sexual desire: The comparative effectiveness of estrogens and androgens. Hormones and Behavior, 78, 178–193.
Carroll, J. L., Volk, K. D., & Hyde, J. S. (1985). Differences between males and females in motives for engaging in sexual intercourse. Archives of Sexual Behavior, 14, 131–139.
Carvalheira, A., & Traeen, B. (2014). Correlates of men’s sexual interest: A cross-cultural study. Journal of Sexual Medicine, 11, 154–164.
Chadwick, S. B., Burke, S. M., Goldey, K. L., Bell, S. N., & van Anders, S. M. (2017a). Sexual desire in sexual minority and majority women and men: The Multifaceted Sexual Desire Questionnaire (DESQ). Archives of Sexual Behavior, 46, 2465–2484.
Chadwick, S. B., Burke, S. M., Goldey, K. L., & van Anders, S. M. (2017b). Multifaceted sexual desire and hormonal associations: Accounting for social location, relationship status, and desire target. Archives of Sexual Behavior, 46, 2445–2463.
Cohen, S., Kamarck, T., & Mermelstein, R. (1983). A global measure of perceived stress. Journal of Health and Social Behavior, 24, 385–396.
Core Team, R. (2016). R: A language and environment for statistical computing. Vienna, Austria: R Foundation for Statistical Computing.
Cupisti, S., Dittrich, R., Binder, H., Kajaia, N., Hoffmann, I., Maltaris, T., & Mueller, A. (2007). Influence of body mass index on measured and calculated androgen parameters in adult women with hirsutism and PCOS. Experimental and Clinical Endocrinology & Diabetes, 115, 380–386.
Dabbs, J. M., Jr. (1990). Salivary testosterone measurements: Reliability across hours, days, and weeks. Physiology & Behavior, 48, 83–86.
Dabbs, J. M., Jr., Jurkovic, G. J., & Frady, R. L. (1991). Salivary testosterone and cortisol among late adolescent male offenders. Journal of Abnormal Child Psychology, 19, 469–478.
Das, A. (2017). Network connections and salivary testosterone among older US women: Social modulation or hormonal causation? Journals of Gerontology: Series B: Psychological Sciences and Social Sciences. https://doi.org/10.1093/geronb/gbx111.
Denney, N. W., Field, J. K., & Quadagno, D. (1984). Sex differences in sexual needs and desires. Archives of Sexual Behavior, 13, 233–245.
Denson, T. F., Ronay, R., von Hippel, W., & Schira, M. M. (2013). Endogenous testosterone and cortisol modulate neural responses during induced anger control. Social Neuroscience, 8, 165–177.
Dibble, E. R., Goldey, K. L., & van Anders, S. M. (2017). Pair bonding and testosterone in men: Longitudinal evidence for trait and dynamic associations. Adaptive Human Behavior and Physiology, 3, 71–90.
Dupuy, H. J. (1973). Developmental rationale, substantive, derivative, and conceptual relevance of the General Well-Being Schedule [Unpublished working paper]. Bethesda, MD: National Center for Health Statistics.
Edelstein, R. S., Chopik, W. J., & Kean, E. L. (2011). Sociosexuality moderates the association between testosterone and relationship status in men and women. Hormones and Behavior, 60, 248–255.
Edelstein, R. S., van Anders, S. M., Chopik, W. J., Goldey, K. L., & Wardecker, B. M. (2014). Dyadic associations between testosterone and relationship quality in couples. Hormones and Behavior, 65, 401–407.
Geniole, S. N., Carre, J. M., & McCornick, C. M. (2011). State, not trait, neuroendocrine function predicts costly reactive aggression in men after social exclusion and inclusion. Biological Psychology, 87, 137–145.
Gettler, L. T., McDade, T. W., Agustin, S. S., Feranil, A. B., & Kuzawa, C. W. (2014). Testosterone, immune function, and life history transitions in Filipino males (homo sapiens). International Journal of Primatology, 35, 787–804.
Goldey, K. L., Avery, L. R., & van Anders, S. M. (2014). Sexual fantasies and gender/sex: A multimethod approach with quantitative content and analysis and hormonal responses. Journal of Sex Research, 51, 917–931.
Goldey, K. L., Posh, A. R., Bell, S. N., & van Anders, S. M. (2016). Defining pleasure: A focus group study of solitary and partnered sexual pleasure in queer and heterosexual women. Archives of Sexual Behavior, 45, 2137–2154.
Goldey, K. L., & van Anders, S. M. (2011). Sexy thoughts: Effects of sexual cognitions on testosterone, cortisol, and arousal in women. Hormones and Behavior, 59, 754–764.
Goldey, K. L., & van Anders, S. M. (2012). Sexual thoughts: Links to testosterone and cortisol in men. Archives of Sexual Behavior, 41, 1461–1470.
Goldhammer, D. L., & McCabe, M. P. (2011). A qualititative exploration of the meaning and experience of sexual desire among partnered women. Canadian Journal of Human Sexuality, 20, 19–29.
Graham, C. A., Sanders, S. A., Milhausen, R. R., & McBride, K. R. (2004). Turning on and turning off: A focus group study of the factors that affect women’s sexual arousal. Archives of Sexual Behavior, 33, 527–538.
Granger, D. A., Shirtcliff, E. A., Booth, A., Kivlighan, K. T., & Schwartz, E. B. (2004). The “trouble” with salivary testosterone. Psychoneuroendocrinology, 29, 1229–1240.
Gray, P. B., Ellison, P. T., & Campbell, B. C. (2007). Testosterone and marriage among Ariaal men of Northern Kenya. Current Anthropology, 48, 750–755.
Hamilton, L. D., Carre, J. M., Mehta, P. H., Olmstead, N., & Whitaker, J. D. (2015). Social neuroendocrinology of status: A review and future directions. Adaptive Human Behavior and Physiology, 1, 202–230.
Hamilton, L. D., & Julian, A. M. (2013). The relationship between daily hassles and sexual function in men and women. Journal of Sex and Marital Therapy, 40, 379–395.
Hamilton, L. D., & Meston, C. M. (2011). The role of salivary cortisol and DHEA-S in response to sexual, humorous, and anxiety-inducing stimuli. Hormones and Behavior, 59, 765–777.
Hamilton, L. D., Rellini, A. H., & Meston, C. M. (2008). Cortisol, sexual arousal, and affect in response to sexual stimuli. Journal of Sexual Medicine, 5, 2111–2118.
Harden, K. P., Kretsch, N., Tackett, J. L., & Tucker-Drob, E. (2014). Genetic and environmental influences on testosterone in adolescents: Evidence for sex differences. Developmental Psychobiology, 56, 1278–1289.
Heiman, J. R., Rupp, H., Janssen, E., Newhouse, S. K., Brauer, M., & Laan, E. (2011). Sexual desire, sexual arousal and hormonal differences in premenopausal US and Dutch women with and without low sexual desire. Hormones and Behavior, 59, 772–779.
Helweg-Larsen, M., & Collins, B. E. (1994). The UCLA Multidimensional Condom Attitudes Scale: Documenting the complex determinants of condom use in college students. Health Psychology, 13, 224–237.
Hou, G., Xiong, W., Wang, M., Chen, X., & Yuan, T. F. (2014). Chronic stress influences sexual motivation and causes damage to testicular cells in male rats. Journal of Sexual Medicine, 11, 653–663.
Hudson, W., Harrison, D., & Crosscup, P. (1981). A short-form scale to measure sexual discord in dyadic relationships. Journal of Sex Research, 17, 157–174.
Janssen, E., Macapagal, K. R., & Mustanski, B. (2013). Individual differences in the effects of mood on sexuality: The Revised Mood and Sexuality Questionnaire (MSQ-R). Journal of Sex Research, 50, 676–687.
Janssen, E., McBride, K. R., Yarber, W., Hill, B. J., & Butler, S. M. (2008). Factors that influence sexual arousal in men: A focus group study. Archives of Sexual Behavior, 37, 252–265.
Khan-Dawood, F. S., Choe, J. K., & Dawood, M. Y. (1984). Salivary and plasma bound and “free” testosterone in men and women. American Journal of Obstetrics and Gynecology, 148, 441–445.
Klein, F., Sepekoff, B., & Wolf, T. J. (1985). Sexual orientation: A multi-variable dynamic process. Journal of Homosexuality, 11, 35–49.
Lassek, W. D., & Gaulin, S. J. C. (2009). Costs and benefits of fat-free muscle mass in men: Relationship to mating success, dietary requirements, and native immunity. Evolution and Human Behavior, 30, 322–328.
Laugero, K. D., & Moberg, G. P. (2000). Effects of acute behavioral stress and LPS-induced cytokine release on growth and energetics in mice. Physiology & Behavior, 68, 415–422.
Leigh, B. C. (1989). Reasons for having and avoiding sex: Gender, sexual orientation, and relationship to sexual behavior. Journal of Sex Research, 26, 199–209.
Lemaire, V., Taylor, G. T., & Mormède, P. (1997). Adrenal axis activation by chronic social stress fails to inhibit gonadal function in male rats. Psychoneuroendocrinology, 22, 563–573.
Liening, S. H., Stanton, S. J., Saini, E. K., & Schultheiss, O. C. (2010). Salivary testosterone, cortisol, and progesterone: Two-week stability, interhormone correlations, and effects of time of day, menstrual cycle, and oral contraceptive use on steroid hormone levels. Physiology & Behavior, 99, 8–16.
Lippi, G., De Vita, F., Salvagno, G. L., Gelati, M., Montagnana, M., & Guidi, G. C. (2009). Measurement of morning saliva cortisol in athletes. Clinical Biochemistry, 42, 904–906.
Little, R. J. (1988). A test of missing completely at random for multivariate data with missing values. Journal of the American Statistical Association, 83, 1198–1202.
Lopez, H. H., Hay, A. C., & Conklin, P. H. (2009). Attractive men induce testosterone and cortisol release in women. Hormones and Behavior, 56, 84–92.
Magrini, G., Chiodoni, G., Rey, F., & Felber, J. P. (1986). Further evidence for the usefulness of the salivary testosterone radioimmunoassay in the assessment of androgenicity in man in basal and stimulated conditions. Hormone Research, 23, 65–73.
Mark, K. P., Fortenberry, J. D., Herbenick, D., Sanders, S., & Reece, M. (2014). The object of sexual desire: Examining the “what” in “what do you desire?” Journal of Sexual Medicine, 11, 2709–2719.
Mark, K. P., & Lasslo, J. A. (2018). Maintaining sexual desire in long-term relationships: A systematic review and conceptual model. Journal of Sex Research, 55, 563–581.
Mazur, A., Mueller, U., Krause, W., & Booth, A. (2002). Causes of sexual decline in aging married men: Germany and America. International Journal of Impotence Research, 14, 101–106.
Meana, M. (2010). Elucidating women’s (hetero)sexual desire: Definitional challenges and content expansion. Journal of Sex Research, 47, 104–122.
Mehta, P. H., & Josephs, R. A. (2010). Testosterone and cortisol jointly regulate dominance: Evidence for a dual-hormone hypothesis. Hormones and Behavior, 58, 898–906.
Mehta, P. H., & Prasad, S. (2015). The dual-hormone hypothesis: A brief review and future research agenda. Current Opinion in Behavioral Sciences, 3, 163–168.
Meston, C. M., & Lorenz, T. A. (2013). Physiological stress responses predict sexual functioning and satisfaction differently in women who have and have not been sexually abused in childhood. Psychological Trauma: Theory, Research, Practice, and Policy, 5, 350–358.
Minnen, A. V., & Kampman, M. (2000). The interaction between anxiety and sexual functioning: A controlled study of sexual functioning in women with anxiety disorders. Sexual and Relationship Therapy, 15, 47–56.
Moberg, G. P., & Mench, J. A. (2000). The biology of animal stress: Basic principles and implications for animal welfare. New York, NY: CAB International.
Motta-Mena, N. V., & Puts, D. A. (2017). Endocrinology of human female sexuality, mating, and reproductive behavior. Hormones and Behavior, 91, 19–35.
Nackers, L. M., Appelhans, B. M., Segawa, E., Janssen, I., Dugan, S. A., & Kravitz, H. M. (2015). Associations between body mass index and sexual functioning in midlife women: The study of women’s health across the nation. Menopause, 22, 1175–1181.
Norton, R. (1983). Measuring marital quality: A critical look at the dependent variable. Journal of Marriage and Family, 45, 141–151.
Peplau, L. A., Hill, C. T., & Rubin, Z. (1993). Sex role attitudes in dating and marriage: A 15-year follow-up of the Boston Couples Study. Journal of Social Issues, 49, 31–52.
Pfattheicher, S., Landhäußer, A., & Keller, J. (2013). Individual differences in antisocial punishment in public goods situations: the interplay of cortisol and testosterone and dominance. Journal of Behavioral Decision Making, 27, 340–348.
Popma, A., Vermeiren, R., Geluk, C. A., Rinne, T., van den Brink, W., Knol, D. L., & Doreleijers, T. A. (2007). Cortisol moderates the relationship between testosterone and aggression in delinquent male adolescents. Biological Psychiatry, 61, 405–411.
Puts, D. A., Pope, L. E., Hill, A. K., Cárdenas, R. A., Welling, L. L., Wheatley, J. R., & Breedlove, S. M. (2015). Fulfilling desire: Evidence for negative feedback between men’s testosterone, sociosexual psychology, and sexual partner number. Hormones and Behavior, 70, 14–21.
Quissell, D. O. (1993). Steroid hormone analysis in human saliva. Annals of the New York Academy of Sciences, 694, 143–145.
Regan, P. C., & Dreyer, C. S. (1999). Lust? Love? Status? Young adults’ motives for engaging in casual sex. Journal of Psychology & Human Sexuality, 11, 1–24.
Revelle, W. (2017). Psych: Procedures for personality and psychological research. Northwestern University, Evanston, IL. https://CRAN.R-project.org/package=psychVersion=1.7.5.
Richters, J., de Visser, R., Rissel, C., & Smith, A. (2006). Sexual practices at last heterosexual encounter and occurrence of orgasm in a national survey. Journal of Sex Research, 43, 217–226.
Roney, J. R., Lukaszewski, A. W., & Simmons, Z. L. (2007). Rapid endocrine responses of young men to social interactions with young women. Hormones and Behavior, 52, 326–333.
Roney, J. R., & Simmons, Z. L. (2013). Hormonal predictors of sexual motivation in natural menstrual cycles. Hormones and Behavior, 63, 636–645.
Rosal, M. C., King, J., Ma, Y., & Reed, G. W. (2004). Stress, social support, and cortisol: Inverse associations? Behavioral Medicine, 30, 11–22.
Rosenberg, M. (1965). Society and the adolescent self-image. Princeton, NJ: Princeton University Press.
Rubinow, D. R., Roca, C. A., Schmidt, P. J., Danaceau, M. A., Putnam, K., Cizza, G., & Nieman, L. (2005). Testosterone suppression of CRH-stimulated cortisol in men. Neuropsychopharmacology, 30, 1906–1912.
Rusbult, C. E., Martz, J. M., & Agnew, C. R. (1998). The Investment Model Scale: Measuring commitment level, satisfaction level, quality of alternatives, and investment size. Personal Relationships, 5, 357–387.
Russell, D., Peplau, L. A., & Ferguson, M. L. (1978). Developing a measure of loneliness. Journal of Personality Assessment, 42, 290–294.
Sadowsky, M., Antonovsky, H., Sobel, R., & Maoz, B. (1993). Sexual activity and sex hormone levels in aging men. International Psychogeriatrics, 5, 181–186.
Salisbury, C. M., & Fisher, W. A. (2014). “Did you come?” A qualitative exploration of gender differences in beliefs, experiences, and concerns regarding female orgasm occurrence during heterosexual sexual interactions. Journal of Sex Research, 51, 616–631.
Schreiner-Engel, P., Schiavi, R. C., White, D., & Ghizzani, A. (1989). Low sexual desire in women: The role of reproductive hormones. Hormones and Behavior, 23, 221–234.
Shamim, M. O., Khan, F. M. A., & Arshad, R. (2015). Association between serum total testosterone and body mass index in middle aged healthy men. Pakistan Journal of Medical Sciences, 31, 355–359.
Shirtcliff, E. A., Granger, D. A., & Likos, A. (2002). Gender differences in the validity of testosterone measured in saliva by immunoassay. Hormones and Behavior, 42, 62–69.
Spector, I. P., Carey, M. P., & Steinberg, L. (1996). The Sexual Desire Inventory: Development, factor structure, and evidence of reliability. Journal of Sex and Marital Therapy, 22, 175–190.
Stanton, S. J., Liening, S. H., & Schultheiss, O. C. (2011). Testosterone is positively associated with risk taking in the Iowa gambling task. Hormones and Behavior, 59, 252–256.
Steptoe, A., & Ussher, M. (2006). Smoking, cortisol and nicotine. International Journal of Psychophysiology, 59, 228–235.
Tinsley, H. E. A., & Brown, S. D. (Eds.). (2000). Handbooks of applied multivariate statistics and mathematical modeling (6th ed.). San Diego, CA: Academic Press.
van Anders, S. M. (2012). Testosterone and sexual desire in healthy women and men. Archives of Sexual Behavior, 41, 1471–1484.
van Anders, S. M. (2013). Beyond masculinity: Testosterone, gender/sex, and human social behavior in a comparative context. Frontiers in Neuroendocrinology, 34, 198–210.
van Anders, S. M. (2015). Beyond sexual orientation: Integrating gender/sex and diverse sexualities via sexual configurations theory. Archives of Sexual Behavior, 44, 1177–1213.
van Anders, S. M., Brotto, L., Farrell, J., & Yule, M. (2009). Associations among physiological and subjective sexual response, sexual desire, and salivary steroid hormones in healthy premenopausal women. Journal of Sexual Medicine, 6, 739–751.
van Anders, S. M., & Dunn, E. J. (2009). Are gonadal steroids linked with orgasm perceptions and sexual assertiveness in women and men? Hormones and Behavior, 56, 206–213.
van Anders, S. M., & Goldey, K. L. (2010). Testosterone and partnering are linked via relationship status for women and ‘relationship orientation’ for men. Hormones and Behavior, 58, 820–826.
van Anders, S. M., Goldey, K. L., & Bell, S. N. (2014). Measurement of testosterone in human sexuality research: Methodological considerations. Archives of Sexual Behavior, 43, 231–250.
van Anders, S. M., Goldey, K. L., Conley, T. D., Snipes, D. J., & Patel, D. A. (2012a). Safer sex as the bolder choice: Testosterone is positively correlated with safer sex behaviorally relevant attitudes in young men. Journal of Sexual Medicine, 9, 727–734.
van Anders, S. M., Goldey, K. L., & Kuo, P. X. (2011). The steroid/peptide theory of social bonds: Integrating testosterone and peptide responses for classifying social behavioral contexts. Psychoneuroendocrinology, 36, 1265–1275.
van Anders, S. M., Hamilton, L. D., Schmidt, N., & Watson, N. V. (2007a). Associations between testosterone secretion and sexual activity in women. Hormones and Behavior, 51, 477–482.
van Anders, S. M., Hamilton, L. D., & Watson, N. V. (2007b). Multiple partners are associated with higher testosterone in North American men and women. Hormones and Behavior, 51, 454–459.
van Anders, S. M., & Hampson, E. (2005). Waist-to-hip ratio is positively associated with bioavailable testosterone but negatively associated with sexual desire in healthy premenopausal women. Psychosomatic Medicine, 67, 246–250.
van Anders, S. M., Tolman, R. M., & Volling, B. L. (2012b). Baby cries and nurturance affect testosterone in men. Hormones and Behavior, 61, 31–36.
Wajchenberg, B. L., Achando, S. S., Okada, H., Czeresnia, C. E., Peixoto, S., Lima, S. S., & Goldman, J. (1986). Determination of the source(s) of androgen overproduction in hirsutism associated with polycystic ovary syndrome by simultaneous adrenal and ovarian venous catheterization: Comparison with the dexamethasone suppression test. Journal of Clinical Endocrinology and Metabolism, 63, 1204–1210.
Watson, D., Clark, L. A., & Tellegen, A. (1988). Development and validation of brief measures of positive and negative affect: The PANAS scales. Journal of Personality and Social Psychology, 54, 1063–1070.
Welker, K. M., Lozoya, E., Campbell, J. A., Neumann, C. S., & Carre, J. M. (2014). Testosterone, cortisol, and psychopathic traits in men and women. Physiology & Behavior, 129, 230–236.
West, B. T. (2009). Analyzing longitudinal data with the linear mixed models procedure in SPSS. Evaluation and the Health Professions, 32, 207–228.
West, B. T., Welch, K. B., & Galecki, A. T. (Eds.). (2014). Linear mixed models: A practical guide using statistical software (2nd ed.). Boca Raton, FL: Chapman Hall CRC Press.
Wiederman, M. W. (2005). The gendered nature of sexual scripts. The Family Journal: Counseling and Therapy for Couples and Families, 13, 496–502.
Winkler, U. H., & Sudik, R. (2009). The effects of two monophasic oral contraceptives containing 30 mcg of ethinyl estradiol and either 2 mg of chlormadinone acetate or 0.15 mg of desogestrel on lipid, hormone and metabolic parameters. Contraception, 79, 15–23.
Wirth, M., Welsh, K., & Schultheiss, O. (2006). Salivary cortisol changes in humans after winning or losing a dominance contest depend on implicit power motivation. Hormones and Behavior, 49, 346–352.
Zhao, J., Leung, J. Y. Y., Lin, S. L., & Schooling, C. M. (2016). Cigarette smoking and testosterone in men and women: A systematic review and meta-analysis of observational studies. Preventive Medicine, 85, 1–10.
Zilioli, S., Caldbick, E., & Watson, N. V. (2014). Testosterone reactivity to facial display of emotions in men and women. Hormones and Behavior, 65, 461–468.
Zimet, G., Dahlem, N., Zimet, S., & Farley, G. (1988). The Multidimensional Scale of perceived social support. Journal of Personality Assessment, 52, 30–41.
Zinbarg, R. E., Revelle, W., Yovel, I., & Li, W. (2005). Cronbach’s α, Revelle’s β, and McDonald’s ω H: Their relations with each other and two alternative conceptualizations of reliability. Psychometrika, 70, 123–133.