Michael R. Sladek

• Ph.D. Psychology
• Assistant Professor at The University of Oklahoma

Cultural mismatch theory suggests that a poor fit between the cultural values endorsed by individuals and the institutions to which they belong results in emotional distress and activation of physiological stress processes, particularly for underrepresented groups. To test a novel paradigm for reducing perceptions of this cultural mismatch, the cur...

Ethnic-racial discrimination experiences, ethnic-racial identity (ERI) development, and attitudes toward other ethnic-racial group contact all make important contributions to individuals’ health and well-being. Absent from the literature is systematic examination of whether these constructs may be measured equivalently for adolescents from differen...

Ethnic-racial identity (ERI) formation is a key developmental competency that contributes to adolescents' sense of self and psychosocial adjustment. A randomized controlled trial (RCT) has demonstrated the efficacy of a universal school-based health promotion intervention program to positively influence adolescents' ERI exploration and ERI resoluti...

There is limited longitudinal research examining multiple ethnic-racial identity (ERI) components from adolescence into young adulthood. The current study modeled Latino adolescents’ ERI trajectories across the college transition (N = 206; Mage = 18.10 years, SD = 0.41; 65.0% female). Longitudinal data from a survey administered on five occasions a...

Cultural‐ecological theories posit that ethnic‐racial identity (ERI) development is shaped by transactions between contexts of ethnic‐racial socialization, yet research considering intersections among multiple contexts is limited. In this study, Black, Latino, White, and Asian American adolescents (N = 98; Mage = 16.26, SD = 1.09; 55.1% female iden...

Objectives: Understanding how ethnicity and race shape individuals’ everyday experiences in context is critical for advancing scientific rigor and addressing ethnic–racial inequities. Daily process studies (e.g., experience-sampling method, ecological momentary assessment, daily diary methods) offer unique utility for studying ethnic–racial discrim...

The purpose of this qualitative study was to describe teachers’ perceptions of changes in their ethnic-racial identity after completing professional development designed to support facilitation of a school-based ethnic-racial identity student curriculum – the Identity Project. We analyzed interview data from 11 U.S. high school educators (four Teac...

Ethnic-racial identity formation has significant consequences for positive youth development. Existing findings support the efficacy of the Identity Project, a school-based ethnic-racial identity intervention, when delivered by researchers; however, effectiveness of the program when delivered by teachers is unknown. This study examined changes in a...

Family ethnic socialization (FES) is a critical component of youth ethnic-racial identity (ERI) development. However, little research has focused on FES experiences amongst White families. The current study applied a convergent mixed methods design to investigate how immigration generational status (i.e., number of U.S.-born parents and grandparent...

Given persisting systemic inequities, rising white nationalism, and an increasingly diverse ethnic-racial population, there is a need for empirical research on how White youth develop anti-racist competencies during adolescence. Indicators of adolescents’ ethnic-racial identity (ERI), such as ERI negative affect and centrality may play an important...

Consistent with conceptual frameworks of ethnic-race-based stress responses, and empirical evidence for the detrimental effects of ethnic-racial discrimination, the current study hypothesized that experiencing more frequent ethnic-racial discrimination during adolescence would predict differences in physiological responses to psychosocial stress ac...

The current cross-sectional study examined how adolescents’ appraisal of how positively others viewed their ethnic-racial group (i.e., public regard) and how integral their ethnic-racial background was to their self-concept (i.e., centrality) related to their intergroup contact approach and avoidance attitudes. Participants were Black, Latinx, and...

Objectives: The current study examined the psychometric properties of the American Identity Questionnaire (Phinney & Devich-Navarro, Journal of Research on Adolescence, 1997, 7, 3). American identity has been associated with societal and personal benefits for ethno-racially diverse populations, but limited research has assessed whether American ide...

Research suggests that the process of adolescents exploring and developing clarity about their ethnic-racial identity (ERI) is an important developmental competency. However, the extent to which individuals view their ERI as central to their overall self-concept (i.e., ERI centrality) informs the degree to which they choose to explore their ERI, po...

In the United States (U.S.), adolescent identity development occurs within a socio-historical context characterized by an ethnic-racial hierarchy, as well as an unequal distribution of power and privilege. The current study examined the associations among two ethnic-racial identity components (i.e., exploration, resolution), perceived ethnic-racial...

Affect reactivity to stress may play a role in the development of internalizing symptoms during the college transition, a critical developmental juncture for Latinx adolescents, the largest ethnic minority group on college campuses. This study examined whether affect reactivity during high school is associated with internalizing symptoms in college...

Theory and empirical evidence indicate that ethnic-racial discrimination serves as a risk factor for adolescents’ psychosocial adjustment, whereas ethnic-racial identity (ERI) development promotes positive youth adjustment and can mitigate the negative outcomes of discrimination-related risk. In Colombia, the legacies of an ethnic-racial hierarchy,...

Objective: Bicultural stress (i.e., challenge arising from navigating 2 cultural contexts) has significant consequences for Latino youth's health, but researchers have yet to examine the implications of bicultural stress for adolescents' sleep. The goals of this study were to examine whether individual and day-to-day (within-person) differences in...

Hypothalamic-pituitary-adrenal (HPA) axis activity has been identified as a mechanism through which daily life stress contributes to health problems and racial/ethnic health disparities. Stress-related changes in neuroendocrine function are evident as early as adolescence, but the ways in which promotive cultural factors may also contribute to vari...

Rumination is an involuntary cognitive process theorized to prolong arousal and inhibit proper emotion regulation. Most available research has examined individual differences in cognitive dispositions to ruminate about stress as a risk marker for psychopathology and other health problems. This intensive longitudinal study extended previous research...

Objectives: College students have cited the 2016 U.S. presidential election as a significant source of stress. The current study examined the prevalence and demographic correlates of clinically significant election-related avoidance and intrusion symptoms among college students 2-3 months after the election. Participants: College students attend...

Culturally linked family influences during adolescence are important predictors of health and well-being for Latino youth, yet few studies have examined whether these familial influences are associated with indicators of typical physiological stress processes. Following a cultural neurobiology framework, we examined the role of family in the everyd...

Negative body talk measures have been developed with predominantly White, female samples. We tested measurement invariance (equivalence) of two available negative body talk scales for Asian, Latina(o), and White college women and men in the U.S. In Study 1 (n = 1501 women; n = 1436 men), multiple group confirmatory factor analyses indicated scalar...

Background Body acceptance programs on college campuses indicated that collegiate women often report feeling pressure to dress in a sexualized manner, and use makeup to enhance beauty. Currently, no quantitative measures exist to assess attitudes and daily behaviors that may arise in response to perceived pressure to wear makeup or dress in a provo...

Investigators are increasingly beginning to examine racial/ethnic and cultural processes in psychobiological research. In this chapter we provide a broad overview of the newly emerging field of cultural neurobiology. First, we highlight important theoretical perspectives that contribute to our motivation for understanding cultural neurobiology. Nex...

Objectives: The present study examined both within- and between-person associations between adolescents' time use (technology-based activities and face-to-face interactions with friends and family) and sleep behaviors. We also assessed whether age moderated associations between adolescents' time use with friends and family and sleep. Design: Ado...

Background and objectives: Social stress and associated coping responses can profoundly influence women's stress physiology and health. Implicit social attentional biases can also influence psychological and physiological stress responses. The purpose of this study was to explore whether a coping style characterized by greater use of social suppor...

Prior work has identified alterations in activity of the hypothalamic-pituitary-adrenal axis as a potential mechanism underlying stress-induced emotional health problems, which disproportionately impact girls beginning in mid-adolescence. How adolescent girls differ from one another in dispositional coping tendencies and shift specific coping strat...

Rumination is a maladaptive form of emotion regulation associated with psychopathology. Research with adults suggests that rumination covaries with diurnal cortisol rhythms, yet this has not been examined among adolescents. Here, we examine the day-to-day covariation between rumination and cortisol, and explore whether trait rumination is associate...

Many late adolescents who transition to the college environment perceive changes in psychosocial stress. One such stressor, loneliness, has been associated with numerous health problems among adolescents and adults. The hypothalamic–pituitary–adrenal axis is one mechanism through which loneliness may affect health. Guided by a risk and resilience f...

There is limited research on cognitive risk factors for eating disorders among young girls despite accumulating evidence that body dissatisfaction and thin-ideal internalization can begin to occur between 3 and 5 years of age. To improve upon the existing literature and significantly contribute to the prevention and intervention literature, the cur...

Adolescents change how they cope with stress across different situations, but also differ from one another in their general capacity to cope. The current study examined whether cortisol reactivity to perceived daily stress varies with both situational (within-person) and individual (between-person) differences in coping. First-year college students...

The regulation of the hypothalamic pituitary adrenal (HPA) axis has received empirical attention as a mechanism contributing to individual differences in health and human development. A variety of sampling tactics and strategies index daily HPA axis functioning including the cortisol awakening response (CAR), the diurnal slope, and the area under t...

Poor sleep and alterations in the stress-sensitive hypothalamic–pituitary–adrenal (HPA) axis may be mechanisms through which loneliness impacts adolescents’ well-being. Few researchers have explored whether daily variation in experiences of social connection predict day-to-day variation in sleep and HPA axis activity among adolescents navigating th...

This paper details the development of the Male Body Talk (MBT) scale and five studies supporting the psychometric soundness of scores on this new measure. Participants were 18–65-year-old men recruited via Amazon’s Mechanical Turk, introductory psychology courses, and snowball sampling. The MBT scale assesses the frequency with which men engage in...

Though researchers are beginning to examine body-related talk in women (often referred to as fat talk), little work has examined how men talk about their bodies with peers. The two studies presented in this article explore body talk among U.S. college men. First, an online survey examined the frequency with which college men engage in negative body...