Childhood Violence, High School Academic Environment, and Adult Alcohol Use Among Latinas and Black Women: A Structural Equation Modeling Study

OBJECTIVE

Young Latinas and Black women drink less than women of other racial/ethnic groups but experience more alcohol-related problems in midlife. This study aims to identify modifiable factors to prevent adult onset of alcohol use disorder (AUD) in this population.

METHODS

Data were collected at six time points as part of the Harlem Longitudinal Development Study from 365 Latinas (47%) and Black (53%) women (mean age at time 1 = 14, standard deviation 1.3). Structural equation modeling was used to test hypothesized pathways from childhood physical and sexual abuse to AUD via depressive mood, anxiety disorders, and somatic complaints in the 20s. We also tested the moderation effect of the high school academic environment by including in the structural equation model two latent variable interaction terms between the school environment and each of the abuse variables.

RESULTS

Childhood physical and sexual abuse was positively associated with depressive mood, anxiety disorders, and somatic complaints when participants were in the 20s. Depressive mood mediated childhood abuse and AUD when women were in the 30s. The high school academic environment attenuated the effect of physical, but not sexual abuse, on depressive mood (β = -0.59, B = -9.38, 95% CI [-14.00, -4.76]), anxiety symptoms (β = -0.61, B = -14.19, 95% CI [-21.76, -6.61]), appetite loss (β = -0.41, B = -10.52, 95% CI [-15.61, -5.42]), and sleeplessness (β = -0.50, B = -9.56, 95% CI [-13.95, -5.17]) in the early 20s.

CONCLUSIONS

Our findings underscore the need to invest in early violence prevention interventions and in education to ensure equitable access to quality, academically oriented, and safe schools.

The Color of Autonomy: Examining Racial Inequity in Coercive Institutional Practices

Two articles recently published in this journal identified racial inequities in routine psychiatric practice. This Open Forum discusses the need for a paradigm shift in inequities research. The two articles reviewed here, one by Shea and colleagues on racial-ethnic inequities in inpatient psychiatric civil commitment and one by Garrett and colleagues on racial-ethnic disparities in psychiatric decisional capacity consultations, are examples of the new research gaze. Four topics are identified for enhancing understanding of racism and other forms of structural exclusion in psychiatric practice: medical authority and power imbalance between providers and patients, involuntary psychiatric commitment and requests for decisional capacity consultations as strategic research events, limited use of theory, and limitations of the literature on psychiatric inequities.

A longitudinal pathway from ethnic-racial discrimination to sexual risk behaviors among Black women and Latinas: Ethnic-racial identity exploration as a protective factor

BACKGROUND

Black women and Latinas in their thirties continue to be at risk for HIV transmission via heterosexual intercourse.

METHODS

Informed by the Theory of Gender and Power, this study investigated a longitudinal path model linking experiences of ethnic-racial discrimination in late adolescence to sexual risk behaviors in adulthood among 492 Black women and Latinas. We also tested whether ethnic-racial identity exploration served as a resilience asset protecting women against the psychological impact of ethnic-racial discrimination. Survey data from female participants in the Harlem Longitudinal Development Study, which has followed a cohort of New York City Black and Latinx youth since 1990, were analyzed. Data for this analysis were collected at four time points when participants were on average 19, 24, 29, and 32 years of age. Structural equation modeling was used to examine a hypothesized pathway from earlier ethnic-racial discrimination to later sexual risk behaviors and the protective role of ethnic-racial identity exploration.

RESULTS

Results confirmed that ethnic-racial discrimination in late adolescence was linked with sexual risk behaviors in the early thirties via increased levels of affective distress in emerging adulthood, experiences of victimization in young adulthood, and substance use in the early thirties among women low in ethnic-racial identity exploration. We also found that ethnic-racial identity served as a resilience asset, as the association between discrimination in late adolescence and affective distress in emerging adulthood was not significant among women with higher levels of ethnic-racial identity exploration.

CONCLUSIONS

The results provide important preliminary evidence that ethnic-racial identity exploration may serve as a resilience asset among Black women and Latinas confronting racial discrimination. Further, we suggest that ethnic-racial identity exploration may constitute an important facet of critical consciousness.

Self-reported anxiety and depression problems and suicide ideation among black and latinx adults and the moderating role of social support

Suicide is a critical public health problem. Over the past decade, suicide rates have increased among Black and Latinx adults in the U.S. Though depression is the most prevalent psychiatric contributor to suicide risk, Black and Latinx Americans uniquely experience distress and stress (e.g., structural adversity) that can independently operate to worsen suicide risk. This makes it important to investigate non-clinical, subjective assessment of mental health as a predictor of suicide ideation. We also investigate whether social support can buffer the deleterious impact of poor mental health on suicide ideation.We analyzed data from 1,503 Black and Latinx participants of the Washington Heights Community Survey, a 2015 survey of residents of a NYC neighborhood. Multivariable logistic regression was conducted to examine the effect of subjectively experienced problems with anxiety and depression on suicide ideation independent of depression diagnosis, and the role of social support as a moderator.Estimated prevalence of past two-week suicide ideation was 5.8%. Regression estimates showed significantly increased odds of suicide ideation among participants reporting moderate (OR = 8.54,95% CI = 2.44-29.93) and severe (OR = 16.84,95% CI = 2.88-98.46) versus no problems with anxiety and depression, after adjustment for depression diagnosis. Informational support, i.e., having someone to provide good advice in a crisis, reduced the negative impact of moderate levels of anxiety and depression problems on suicide ideation.Findings suggest that among Black and Latinx Americans, subjective feelings of anxiety and depression account for a significant portion of the suicide ideation risk related to poor mental health. Further, social support, particularly informational support, may provide protection against suicide ideation.

Anti-Asian Attitudes in the Context of the COVID-19 Pandemic: an Exploratory Study

Objective

The purpose of this paper was to measure if people with greater “structural literacy,” as indicated by greater awareness of racial and socioeconomic disparities in COVID-19 impact, would hold fewer negative attitudes against those perceived to be Asian in the context of the COVID-19 pandemic.

Methods

A survey was administered between April and August 2020 to participants from two longitudinal cohorts in New York State. The survey assessed anti-Asian attitudes relating to COVID-19, awareness of racial and socioeconomic disparities in COVID-19, residential location, socioeconomic status, and other demographic information. The sample included 233 Black, Latinx, and White midlife adults from urban, suburban, and rural New York neighborhoods. Multivariable regression modeling was used to assess associations between COVID-19 disparities awareness, an indicator of structural literacy, and anti-Asian attitudes, adjusting for gender, race/ethnicity, residential location, and socioeconomic disadvantage.

Results

Greater awareness of disparities in COVID-19 was associated with lower levels of anti-Asian attitudes after adjustment (adj-slope =  − 0.358, p < 0.001).

Conclusion

Greater structural literacy, as measured by awareness of socioeconomic and racial disparities in COVID-19 impact, was associated with fewer anti-Asian attitudes among Black, Latinx, and White adults.

Implications

Increasing structural literacy may reduce anti-Asian attitudes that motivate harmful acts against oppressed groups.

Rethinking Cultural Competence: Shifting to Cultural Humility

Healthcare and social services providers are deemed culturally competent when they offer culturally appropriate care to the populations they serve. While a review of the literature highlights the limited effectiveness of cultural competence training, its value remains largely unchallenged and it is institutionally mandated as a means of decreasing health disparities and improving quality of care. A plethora of trainings are designed to expose providers to different cultures and expand their understanding of the beliefs, values and behavior thus, achieving competence. Although this intention is commendable, training providers in becoming competent in various cultures presents the risk of stereotyping, stigmatizing, and othering patients and can foster implicit racist attitudes and behaviors. Further, by disregarding intersectionality, cultural competence trainings tend to undermine provider recognition that patients inhabit multiple social statuses that potentially shape their beliefs, values and behavior. To address these risks, we propose training providers in cultural humility, that is, an orientation to care that is based on self-reflexivity, appreciation of patients’ lay expertise, openness to sharing power with patients, and to continue learning from one’s patients. We also briefly discuss our own cultural humility training. Training providers in cultural humility and abandoning the term cultural competence is a long-awaited paradigm shift that must be advanced.

Longitudinal predictors of male sexual partner risk among Black and Latina women in their late thirties: ethnic/racial identity commitment as a protective factor

This study aimed to investigate predictors of male sexual partner risk among Latinas and Black women in their late thirties. We used multiple regression analysis to examine factors associated with male sexual partner risk among 296 women who participated in two waves of the Harlem Longitudinal Development Study (New York, 2011-2013 and 2014-2016). Women who experienced childhood sexual abuse had higher risk partners than those who did not [b = 0.16, 95% confidence interval (CI) = 0.06, 0.28]. Earlier marijuana use was a risk factor for partner risk in the late thirties (b = 0.12, 95% CI = 0.04, 0.27). Higher levels of ethnic/racial identity commitment mitigated this risk (b = - 0.15, 95% CI = - 0.26, - 0.04). Ethnic/racial identity commitment can be protective against male sexual partner risk among Latina and Black women who use marijuana. Further research should explore the protective role of different dimensions of ethnic/racial identity against sexually transmitted infections, including HIV.

Trajectories of violent victimization predicting PTSD and comorbidities among urban ethnic/racial minorities

OBJECTIVE

To examine the effect of long-term violent victimization from late adolescence to the mid-30s on posttraumatic stress disorder (PTSD) and comorbid psychiatric disorders in adulthood among urban African Americans and Puerto Ricans.

METHOD

Data were collected from a large urban community sample (N = 674) at 4 time points associated with mean ages of 19, 24, 29, and 36 years. Trajectories of violent victimization were extracted using growth mixture modeling and used to predict psychiatric disorders and comorbidities in adulthood.

RESULTS

The sample was 52.8% African American and 47.2% Puerto Rican, with 60% females. Three trajectory groups of violent victimization were identified: high, intermediate, and low. Over half of the sample reported relatively high- and intermediate-level violent victimization experiences from adolescence to adulthood. Group comparisons showed that participants belonging to the relatively high-victimization group had greater odds of having PTSD, major depressive episode (MDE), and substance use disorder (SUD) separately, as well as comorbid PTSD-SUD and PTSD-MDE, compared with those classified as having relatively low levels of victimization. Having intermediate-level victimization experiences, compared with low-level victimization experiences, over time was associated with higher odds of PTSD and MDE separately and comorbid PTSD-MDE.

CONCLUSIONS

Long-term exposure to relatively high levels of violent victimization during emerging and young adulthood is associated with PTSD and comorbid psychiatric disorders in the 30s. Social, structural, and interpersonal factors underlying the differential patterns of violent victimization in urban African American and LatinX youth need to be identified to adequately inform prevention efforts. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Human Immunodeficiency Virus (HIV) Risk Behaviors by African American and Puerto Rican Women in the 4th Decade of Life: Substance Use and Personal Attributes

African Americans have the most severe burden of human immunodeficiency virus (HIV) of all racial/ethnic groups in the United States. Also, HIV continues to be a serious threat to the health of the Hispanic/Latino community. For prevention purposes, the present study examined the relationship of both cannabis use and self-control with HIV risk behaviors in a sample of African American and Puerto Rican female adolescents, young adults, and adults. Among the total of 343 female participants, half were African American and the other half were Puerto Rican. Logistic regression analyses were used to examine earlier cannabis use as well as self-control and later HIV risk behaviors. High frequency of cannabis use and high self-control measured at ages 19 to 29 were positively and negatively related to having sexual intercourse with someone they just met at ages 32 to 39. Prevention programs should incorporate the role of cannabis use and low self-control as related to HIV risk behaviors. Our results may have particular utility for designing interventions focused on not only cannabis use (a risk factor) but also self-control (a protective factor) as related to HIV sexual risk behaviors.

Sexual risk behaviors in African American and Puerto Rican women: Impulsivity and self-control

Millions of people are living with the human immunodeficiency virus (HIV). African American and Hispanic/Latino communities suffer the most severe burden of HIV in the US. The ultimate goal of this study was to better understand risk factors for this infection: Do impulsivity and self control operate independently or synergistically with respect to HIV sexual risk behaviors in women? An enhanced understanding of these risk factors may better inform future interventions. Among the total of 343 female participants, half were African American and the other half were Latina. Data in this study were collected in the area of New York City during 2014–2016, when the mean age of the participants was 39 years. Linear regression analyses were used to examine the associations of impulsivity and self control with HIV sexual risk behaviors. Impulsivity and self control were independently associated with most of the HIV sexual risk behaviors examined. In addition, the interaction terms between impulsivity and low self control were all significantly associated with each of the sexual risk behaviors. Prevention programs should consider incorporating the roles of impulsivity and self control simultaneously as related to HIV risk behaviors.

•

Impulsivity was positively associated with the HIV sexual risk behaviors.

•

Self control was negatively associated with the HIV sexual risk behaviors.

•

Interaction effect of impulsivity and low self control was related to HIV risks.

Longitudinal pathways from unconventional personal attributes in the late 20s to cannabis use prior to sexual intercourse in the late 30s

A quarter of people living with human immunodeficiency virus (HIV) infection in the United States are women. Furthermore, African American and Hispanic/Latina women continue to be disproportionately affected by HIV, compared with women of other races/ethnicities. Cannabis use prior to intercourse may be associated with increased risky sexual behaviors which are highly related to HIV. The ultimate goal of this research is to better understand the relationships between unconventional personal attributes (e.g., risk-taking behaviors) in the late 20s, substance use (e.g., alcohol) in the mid 30s, and cannabis use prior to intercourse in the late 30s using a community sample; such an understanding may inform interventions. This study employing data from the Harlem Longitudinal Development Study includes 343 female participants (50% African Americans, 50% Puerto Ricans). Structural equation modeling indicated that unconventional personal attributes in the late 20s were associated with substance use in the mid 30s (β=0.32, p<0.001), which in turn, was associated with cannabis use prior to sexual intercourse in the late 30s (β=0.64, p<0.001). Unconventional personal attributes in the late 20s were also directly related to cannabis use prior to sexual intercourse in the late 30s (β=0.39, p<0.01). The findings of this study suggest that interventions focused on decreasing unconventional personal attributes as well as substance use may reduce sexual risk behaviors among urban African American and Puerto Rican women. Also, the implications of this study for health care providers and researchers working in HIV prevention are that these precursors may be useful as patient screening tools.

Substance Use and the Number of Male Sex Partners by African American and Puerto Rican Women

BACKGROUND

In the United States (US), there are 19 million new sexually transmitted disease (STD) infections each year. Untreated STDs can lead to serious long-term adverse health consequences, especially for young women. Centers for Disease Control and Prevention estimates that undiagnosed and untreated STDs cause at least 24,000 women in the US each year to become infertile. This clearly is a public health issue of great concern for young women.

MATERIALS AND METHODS

The current cross-sectional study included a community sample consisting of 343 female participants (50% African Americans, 50% Puerto Ricans) at their mean age of 39 years. Regression analyses were conducted to examine the associations of time-varying factors within-person (e.g., substance use) and fixed effects factors between-persons (e.g., race/ethnicity) with the number of male sexual partners.

RESULTS

Alcohol use (b=0.14, p<0.01), cannabis use (b=1.10, p<0.01), marital status - unmarried (b=-0.16, p<0.05), and race/ethnicity - African American (b=-0.20, p<0.01) were significantly related to having a higher number of male sex partners in the past year.

CONCLUSIONS

From a public health perspective, treatment and prevention programs for sexual risk behavior focused on substance use as well as socio-cultural factors (i.e., marital status, race/ethnicity) may be more effective than programs focused only on substance use.

Adolescent Academic Adjustment Factors and the Trajectories of Cigarette Smoking from Adolescence to the Mid-thirties

Knowledge of early predictors which differentiate between various longitudinal smoking patterns might facilitate designing more effective interventions. Using data from 806 participants, we examined the association of three adolescent academic adjustment factors, Educational Aspirations and Expectations; Perception of School Achievement; and Trouble at School, to five trajectories of cigarette use covering 23 years from adolescence to adulthood. The five trajectory groups were: heavy/continuous smokers, late starters, quitter/decreasers, occasional smokers, and nonsmokers. Each academic factor predicted smoking trajectory group membership. Each academic factor was significantly associated with being a heavy/continuous smoker rather than a member of other trajectory groups. Behavioral academic factors also differentiated quitter/decreasers from late starters, occasional smokers, and nonsmokers. Adolescents manifesting academic maladjustment risk becoming early, chronic smokers. Prevention and intervention efforts targeting educational maladjustment may decrease cigarette smoking.

Psychosocial Predictors of Mental Health Service Utilization Among Women During their Mid-Sixties

This prospective study examined the longitudinal pathways to the utilization of mental health services among women in their mid-sixties. Earlier educational level, psychological symptoms, cigarette use, and physical diseases and later psychological symptoms were examined as predictors of mental health services utilization. The sample consisted of a prospective cohort of women (N = 511) who were followed from young adulthood (mean age = 32) to late midlife (mean age = 65). Using structural equation modeling, the results supported a mediational model showing that earlier low educational level and greater psychological symptoms predicted increased cigarette smoking. Cigarette smoking predicted later physical diseases and symptoms. Physical diseases and symptoms were related to financial difficulty and later psychological symptoms and, ultimately, the use of mental health services by women in the mid-sixties.

Adolescent self-control predicts joint trajectories of marijuana use and depressive mood into young adulthood among urban African Americans and Puerto Ricans

Previous studies have identified an association between depressive mood and marijuana use. We examined adolescent self-control as a predictor of membership in joint developmental trajectories of depressive mood and marijuana use from adolescence to young adulthood. Urban African Americans and Puerto Ricans (N = 838) were sampled when participants were on average 14, 19, 24, and 29 years old. Using growth mixture modeling, four joint trajectory groups of depressive mood and marijuana use were established: low marijuana use/low depressive mood, low marijuana use/intermediate depressive mood, high marijuana use/low depressive mood, and high marijuana use/high depressive mood. Weighted logistic regression analysis showed that self-control at age 14 distinguished the high marijuana use/high depressive mood group and the low marijuana use/low depressive mood group from each of the other groups. Findings show that the co-occurrence of high levels of marijuana use and depressive mood from adolescence into young adulthood is predicted by low levels of self-control in adolescence. On the other hand, high selfcontrol is associated with low marijuana use and low levels of depression over time. Thus, while deficits in self-control in adolescence constitute a significant risk for maladjustment over time, high self-control exerts a protective factor with regard to marijuana use and depressive mood into young adulthood.

Joint trajectories of victimization and marijuana use and their health consequences among urban African American and Puerto Rican young men

We examined the joint trajectories of violent victimization and marijuana use from emerging adulthood to the early thirties and their health consequences in the early thirties among urban African American and Puerto Rican men. Data were collected from a community sample of young men (N = 340) when they were 19, 24, 29, and 32 years old. The joint trajectories of violent victimization and marijuana use were extracted using growth mixture modeling. Three distinct joint trajectory groups of violent victimization and marijuana use were identified: high violent victimization/consistently high marijuana use; low violent victimization/increasingly high marijuana use, and low violent victimization/low marijuana use. Group comparisons using regression analyses showed that men who had experienced high levels of violent victimization and were high frequency marijuana over time users experienced the most adverse psychological and physical health outcomes, including more health problems, psychological maladjustment, and substance use disorders.

Strong field electron emission from fixed in space H(2)(+) ions

We have studied electron emission from the H(2)(+) ion by a circularly polarized laser pulse (800 nm, 6×10(14)  W/cm(2)). The electron momentum distribution in the body fixed frame of the molecule is experimentally obtained by a coincident detection of electrons and protons. The data are compared to a solution of the time-dependent Schrödinger equation in two dimensions. We find radial and angular distributions which are at odds with the quasistatic enhanced ionization model. The unexpected momentum distribution is traced back to a complex laser-driven electron dynamics inside the molecule influencing the instant of ionization and the initial momentum of the electron.

Unexpected benefits: pathways from smoking restrictions in the home to psychological well-being and distress among urban Black and Puerto Rican Americans

INTRODUCTION

This study examined the pathways from smoking policies in the home (no ban, partial ban, and total ban on smoking) to psychological well-being (e.g., self-esteem) and psychological symptoms (e.g., depressive symptoms) as mediated by a healthy lifestyle (engaging in exercise, eating healthful foods, and sleeping enough) and cigarette smoking among a sample of urban Black and Puerto Rican Americans.

METHODS

Questionnaire data were collected from 816 participants (mean age = 32 years). Structural equation modeling (SEM) was employed to examine the pathways of restrictions on smoking in the home to a healthy lifestyle, cigarette smoking, psychological well-being, and psychological distress.

RESULTS

The SEM showed mediational pathways linking higher levels of restrictions on smoking in the home with a healthy lifestyle, which in turn was related negatively to psychological distress and positively to psychological well-being. Higher levels of restrictions on smoking in the home were also related inversely to cigarette smoking, which was related positively to psychological distress and negatively to psychological well-being.

CONCLUSIONS

Findings show that higher levels of restrictions on smoking in the home are associated with a healthier lifestyle and less cigarette smoking, which in turn are associated with better psychological functioning. Greater restrictions on smoking in the home may thus support positive lifestyle choices, including exercise and nutrition, as well as psychological functioning.

Trajectories of marijuana use and psychological adjustment among urban African American and Puerto Rican women

BACKGROUND

The current longitudinal study examined the developmental patterns of marijuana use and their relationship with subsequent psychological adjustment in a community-based sample of urban African American and Puerto Rican women.

METHOD

Participants were interviewed five times over a period ranging from adolescence (mean age 14.0 years) to adulthood (mean age 32.5 years). Outcome measures included depressive symptoms, anger/hostility and the presence of a substance use disorder (abuse/dependence).

RESULTS

Three distinct trajectories of marijuana use were identified: non-users, increasers and quitters. Increasers reported higher levels of depressive symptoms and anger/hostility than did non-users and were more likely to meet criteria for a substance use disorder at age 32.5 years.

CONCLUSIONS

Our findings indicate that early-starting long-term use of marijuana is associated with psychological maladjustment among women. Prevention efforts should emphasize the long-term cost associated with marijuana use, and that the best psychological health is reported by those who abstain from the drug.

Nicotine dependence and problem behaviors among urban South African adolescents

Tobacco use and its concomitant, nicotine dependence, are increasing in African countries and other parts of the developing world. However, little research has assessed nicotine dependence in South Africa or other parts of the African continent. Previous research has found that adolescent problem behaviors, including tobacco use, tend to cluster. This study examined the relationship between nicotine dependence and adolescent problem behaviors in an ethnically diverse sample of urban South African adolescents. A community sample (N = 731) consisting of "Black," "White," "Coloured," and "Indian" youths aged 12-17 years was drawn from the Johannesburg metropolitan area. Structured interviews were administered by trained interviewers. Nicotine dependence was assessed by the Fagerström Test of Nicotine Dependence. Logistic regression analyses showed that higher levels of nicotine dependence significantly predicted elevated levels of violent behavior, deviant behavior, marijuana and other illegal drug use, binge drinking, early sexual intercourse, multiple sexual partners, and inconsistent condom use, despite control on the adolescents' demographic characteristics, peer smoking, conflict with parents, peer deviance, and the availability of legal and illegal substances. These relationships were robust across ethnicity and gender. The findings indicate the need for policy makers and prevention and intervention programs in South Africa to consider adolescent nicotine dependence in conjunction with comorbid problem behaviors, including other substance use, sexual risk behaviors, and deviant behaviors.

The Relationship Between Receptivity to Media Models of Smoking and Nicotine Dependence Among South African Adolescents

The purpose of this study is to determine the association of receptivity to media models of smoking and nicotine dependence among South African adolescents from four ethnic groups. A stratified random sample of 731 adolescents aged 12 to 17 years (mean=14. 55, SD=1.68) was drawn from Johannesburg, South Africa. A structured questionnaire was administered to the participants in their homes by trained interviewers. Receptivity to media models of smoking was assessed with a three-item Likert scale. The dependent variable, nicotine dependence, was assessed with the Fagerström Test for Nicotine Dependence (FTND). Regression analyses showed a positive relationship between media receptivity and nicotine dependence, with control on demographic variables and hours of TV watched by the adolescent. This relationship was found to be strongest among White adolescents and weakest among Black adolescents. Though equally receptive to media models of smoking, Black adolescents have lower FTND scores than their peers from other South African ethnic groups. This may be related to the low prevalence of images in South Africa depicting Black people smoking cigarettes. Cultural norms against smoking among Black adolescents may also serve as a protective factor.

Predictors of DSM and Fagerstrom-defined nicotine dependence in African American and Puerto Rican young adults

This study examined the psychosocial predictors of nicotine dependence, as defined by a variant of the criteria employed in the DSM-IV-specifically that of the University of Michigan Composite International Diagnostic Interview (UM-CIDI)-and the Fagerstrom Test for Nicotine Dependence (FTND). The study was conducted with a community sample of African American and Puerto Rican young adults (N = 475; mean age = 26). Predictor variables included physiologically based psychosocial (i.e., depressive symptoms and family problems with smoking) as well as social-behavioral psychosocial (i.e., rebelliousness and partner's problems with smoking) predictors of nicotine dependence. Using multiple regression analyses, UM-CIDI-defined dependence was predicted by each of the four psychosocial variables, while FTND-defined dependence was predicted only by the social-behavioral variables. These findings bear out the disparate dimensions of nicotine dependence each measure taps. Research and clinical implications of the findings are discussed, and the study's limitations are noted.

Associations between Marijuana Use During Emerging Adulthood and Aspects of the Significant Other Relationship in Young Adulthood

A prospective design was used to examine the association of marijuana use during the transition from late adolescence to early adulthood with reported relationship quality with significant other in the mid- to late twenties. The community-based sample consisted of 534 young adults (mean age = 27) from upstate New York. The participants were interviewed at four points in time at mean ages 14, 16, 22, and 27 years. Marijuana use during the transition from late adolescence to early adulthood was associated with less relationship cohesion and harmony, and with more relationship conflict with control on variables reflecting the participants' early interpersonal adjustment and the quality of the relationships with their parents. Findings suggest that marijuana use during emerging adulthood predicts diminished relationship quality with a partner in the mid- to late twenties.

Pathways to smoking cessation among African American and Puerto Rican young adults

OBJECTIVES

We examined the pathways to smoking cessation between late adolescence and young adulthood.

METHODS

We obtained data from a sample of urban African American and Puerto Rican young adults (N=242), mean age 19 years, who reported tobacco use and determined cessation rates between late adolescence and young adulthood. We used structural equation modeling to examine the pathways of positive family relations, family smoking, maladaptive personality attributes, and substance use to smoking cessation.

RESULTS

A mediational pathway linked the absence of positive family relations with maladaptive personality attributes, both of which were related to substance use and ultimately smoking cessation. Substance use mediated the path between family smoking and smoking cessation.

CONCLUSIONS

The results suggest that a positive relationship with one's parents, less smoking in the family, conventional personality attributes, and little or no other substance use facilitate smoking cessation among young adults.

Longitudinal trajectories of ethnic identity among urban Black and Latino adolescents

The current study modeled developmental trajectories of ethnic identity exploration and affirmation and belonging from middle to late adolescence (ages 15-18) and examined how these trajectories varied according to ethnicity, gender, immigrant status, and perceived level of discrimination. The sample consisted of 135 urban low-income Black and Latino adolescents (42% male, 34% Black, 66% Latino). Consistent with developmental theory, individual growth modeling identified an average quadratic trajectory of ethnic identity exploration characterized by decelerating levels of exploration after 10th grade. However, ethnicity and perceived discrimination by peers moderated this pattern. No uniform growth pattern in affirmation was found and Black and Latino adolescents displayed equally high levels of affirmation over time.

Peer and parental influences on longitudinal trajectories of smoking among African Americans and Puerto Ricans

The purpose of this study was to identify distinct trajectories of smoking behavior during a period extending from adolescence (mean age = 14 years) to young adulthood (mean age = 26 years) among African American and Puerto Rican adolescents/young adults, to examine ethnic and gender differences in group membership, and to assess the ability of peer and parental smoking to distinguish among trajectory groups. A community-based sample of 451 African American and Puerto Rican adolescents was interviewed four times during adolescence and in early adulthood, covering a span of 12 years. For both ethnic/racial groups, four distinct trajectories were identified: Nonsmokers, maturing-out smokers, late-starting smokers, and early-starting continuous smokers. Compared with Puerto Ricans, African Americans were over-represented in the nonsmoking group, whereas Puerto Ricans were over-represented in the early-starting continuous group. Females were more likely than males to be early-starting continuous smokers than late starters. Adolescents who were exposed to peer and parental smoking in early adolescence were more likely to belong to trajectory groups characterized by higher levels of smoking. These findings show that exposure to peer and parental smoking in early adolescence constitutes a risk factor for engaging in elevated levels of smoking behavior at an early age and for continued smoking into adulthood for urban African Americans and Puerto Ricans. To be most effective, smoking prevention programs should address peer group and family influences on adolescent smoking.

Longitudinal trajectories of ethnic identity among urban Black and Latino adolescents

The current study modeled developmental trajectories of ethnic identity exploration and affirmation and belonging from middle to late adolescence (ages 15-18) and examined how these trajectories varied according to ethnicity, gender, immigrant status, and perceived level of discrimination. The sample consisted of 135 urban low-income Black and Latino adolescents (42% male, 34% Black, 66% Latino). Consistent with developmental theory, individual growth modeling identified an average quadratic trajectory of ethnic identity exploration characterized by decelerating levels of exploration after 10th grade. However, ethnicity and perceived discrimination by peers moderated this pattern. No uniform growth pattern in affirmation was found and Black and Latino adolescents displayed equally high levels of affirmation over time.

Trajectories of perceived adult and peer discrimination among Black, Latino, and Asian American adolescents: patterns and psychological correlates

This article presents results from a 3-year longitudinal study of the growth patterns and correlates of perceived discrimination by adults and by peers among Black, Latino, and Asian American high school students. Results revealed a linear increase over time in levels of perceived discrimination by adults, whereas perceptions of discrimination by peers remained stable over time. Asian American and non-Puerto Rican Latino adolescents (primarily Dominican) reported higher levels of peer and/or adult discrimination than did Puerto Rican youth, whereas Black adolescents reported a steeper increase over time in levels of perceived discrimination by peers and by adults than did Puerto Rican adolescents. Peer and adult discrimination was significantly associated with decreased self-esteem and increased depressive symptoms over time. Ethnic identity and ethnicity were found to moderate the relationships between perceived discrimination and changes in psychological well-being over time. Results underscore the need to include perceptions of discrimination when studying the development and well-being of ethnic minority adolescents.

Predictors of drug use among South African adolescents

PURPOSE

To determine the association of frequency of illegal drug use with five groups of factors: environmental stressors, parental drug use, parental child rearing, peer drug use, and adolescent personal attributes.

METHODS

1468 male (45%) and female (55%) adolescents, aged 12 to 17 years (mean 14.76, SD 1.51), were interviewed at home in Durban and Capetown, South Africa. Independent measures assessed environmental stressors, parental child rearing, parental drug use, peer drug use, and adolescent personal attributes. The dependent variable was the adolescents' frequency of illegal drug use.

RESULTS

Regression analyses showed that personal attributes and peer substance use explained the largest percentage of the variance in the adolescents' frequency of illegal drug use. In addition, both of the parental factors and the environmental stressors contributed to the explained variance in adolescent drug use above and beyond the two more proximal domains at a statistically significant level.

CONCLUSIONS

Knowing the contribution of more proximal vs. more distal risk factors for illegal drug use is useful for prioritizing targets for interventions. Targeting changes in the more proximal predictors (e.g., adolescent personal attributes) may be more effective as well as more feasible than trying to produce changes in the more distal factors, such as environmental stressors.

The protective role of ethnic and racial identity and aspects of an Africentric orientation against drug use among African American young adults

In this study, the authors examined (a) the protective potential of multiple components of ethnic and racial identity and (b) the aspects of an Africentric orientation for moderating psychobehavioral risk and protective factors for drug use among a sample of 333 urban low-income African American young adults. Ethnic and racial identity and Africentric variables moderated the relationship between psychobehavioral variables and drug stage in 32.5% of the cases. Ethnic and racial identity and Africentric values for African American young adults seemed to be important as moderators of the association between psychobehavioral factors and young adult drug use. The authors suggested implications for future research and interventions.

Systemic and splanchnic endothelin-1 plasma levels in liver cirrhosis before and after transjugular intrahepatic portosystemic shunt (TIPS)

AIMS/BACKGROUND

Endothelin-1 (ET-1) may be a mediator for portal hypertension in liver cirrhosis. The aim of the present study was to determine the concentrations of ET-1 in the systemic and splanchnic circulation before and after reduction of portal hypertension by transjugular intrahepatic portosystemic shunt implantation (TIPS).

METHODS

Plasma concentrations of immunoreactive ET-1 were measured in peripheral venous blood samples from 25 patients with liver cirrhosis before and at 1, 3, 9 and 15 months after TIPS. Furthermore, acute effects of TIPS on ET-1 were studied in plasma samples from the hepatic vein, the portal vein 30 minutes before and after TIPS and in the femoral artery (only after TIPS) in a subgroup of 15 patients. In addition, the portocaval pressure gradient was determined before and after TIPS.

RESULTS

Before TIPS peripheral venous plasma ET-1 concentrations (n=25; median 4.2 pg/ml; range 1.9-14.7) were significantly increased in patients with refractory ascites (n=7; median 7.8, range 3.5 14.7) compared to patients with repetitive bleeding (n=18; median 3.4; range 1.9-7.1) (p=0.003). Furthermore, peripheral ET-1 concentrations correlated with the degree of liver dysfunction according to the Child-Pugh classification (Spearman's r=0.46; p=0.02). Following TIPS, peripheral ET-1 concentrations remained unchanged during a follow-up of 15 months. Before TIPS, a positive gradient of ET-1 concentrations from portalvenous to hepatovenous and peripheral venous levels was found (p<0.03). Immediately after TIPS, arterial ET-1 concentrations reached markedly increased levels in individual patients (88, 92 and 103 pg/ml). Severe systemic reactions to these high levels were not observed. Peripheral venous, hepatovenous and portalvenous ET-1 concentrations did not correlate with portocaval pressure gradients.

CONCLUSION

Cirrhotic patients demonstrated unchanged peripheral venous ET-1 concentrations up to 15 months after TIPS. Portal congestion was associated with increased ET-1 levels in the prehepatic splanchnic area. The effect of portal decompression on splanchnic and systemic ET-1 levels deserves further investigation.

Plant regeneration from meristems of grain legumes: soybean, cowpea, peanut, chickpea, and bean

The regeneration potential of shoot apical meristems of soybean, cowpea, peanut, chickpea, and bean was studied on agar-solidified MS nutrient medium supplemented with various concentrations of benzyladenine (BA) and napthaleneacetic acid (NAA) alone or in combination. Soybean plantlets could be regenerated only when 0.05–0.1 μM BA was applied in conjunction with 1 μM NAA. Cowpea meristems did not require exogenously supplied hormones for maximum (100%) plant regeneration to occur. Extremely low levels of BA (0.1–0.005 μM) in association with low levels of NAA (0.05 μM) also induced plant regeneration at very high frequency. Similarly, bean meristems differentiated into plantlets on hormone-free medium or on medium containing only the auxin, NAA. Multiple bud regeneration (15–30 buds per meristem) was induced from bean meristems at high cytokinin levels (10 μM BA). Elongated bean shoots differentiated roots on half-strength MS medium containing 1 μM indoleacetic acid (IAA). Although most combinations of BA or BA and NAA induced shoot regeneration from peanut and chickpea meristems, whole plant regeneration occurred more frequently (75%) from the former only when 0.1 μM BA was applied in combination with 10 μM NAA. Multiple axillary branching occurred from the main shoots regenerated from chickpea meristems; however, rooting occurred only when these shoots were recultured on medium containing 1 μM indolebutyric acid (IBA). Plantlets regenerated from the meristems of all these grain legumes were successfully transferred to pots and grown to maturity.