Sleep EEG changes during adolescence: An index of a fundamental brain reorganization

Delta (1–4 Hz) EEG power in non-rapid eye movement (NREM) sleep declines massively during adolescence. This observation stimulated the hypothesis that during adolescence the human brain undergoes an extensive reorganization driven by synaptic elimination. The parallel declines in synaptic density, delta wave amplitude and cortical metabolic rate during adolescence further support this model. These late brain changes probably represent the final ontogenetic manifestation of nature’s strategy for constructing nervous systems: an initial overproduction of neural elements followed by elimination. Errors in adolescent brain reorganization may cause mental illness; this could explain the typical age of onset of schizophrenia. Longitudinal studies of sleep EEG are enhancing our knowledge of adolescent brain maturation. Our longitudinal study of sleep EEG changes in adolescence showed that delta power, which may reflect frontal cortex maturation, begins its decline between ages 11 and 12 years and falls by 65% by age 17 years. In contrast, NREM theta power begins its decline much earlier. Delta and theta EEG frequencies are important to sleep theory because they behave homeostatically. Surprisingly, these brain changes are unrelated to pubertal maturation but are strongly linked to age. In addition to these (and other) maturational EEG changes, sleep schedules in adolescence change in response to a complex interaction of circadian, social and other influences. Our data demonstrate that the daytime sleepiness that emerges in adolescence is related to the decline in NREM delta as well as to altered sleep schedules. These longitudinal sleep data provide guideposts for studying cognitive and behavioral correlates of adolescent brain reorganization.     

Religiosity, self-control, and antisocial behavior: Religiosity as a promotive and protective factor

Three hypotheses with the potential to provide information on the role of religiosity as a promotive and protective factor in early adolescence were tested. Adolescents (N = 166, M age = 13 years, 49% female, 49% European American, 45% African American) and mothers reported their own personal importance of religion and the frequency of their attendance of religious services. Greater mother importance and attendance was associated with greater adolescent importance and attendance. Mother importance was indirectly linked to adolescent antisocial behavior through adolescent importance. Less adolescent importance and attendance were associated with low self-control and low self-control was associated with more antisocial and rule-breaking behavior. Adolescent importance also moderated the links between low self-control and antisocial and rule-breaking behavior such that low levels of self-control were more strongly associated with more antisocial and rule-breaking behavior among adolescents reporting low religious importance compared to adolescents reporting high religious importance.     

Socialization and development of the work ethic among adolescents and young adults

Work ethic is part of a broader field of attitudes, identified as cultural conservatism. The results of this longitudinal study—three repeated measurements with 620 adolescents and one of their parents as participants—show that parents' social economic status and educational level are associated with their cultural conservatism, and with the educational level and cultural conservatism of their children. During adolescence, parents effectively transfer their own cultural (non-)conservatism to their children. These socialization factors of adolescent cultural conservatism and adolescent educational level are important determinants of their work ethic. Lower educational level and higher cultural conservatisms of adolescents predict a stronger work ethic. Work ethic is a stable type of attitude, with work ethic at a younger age strongly predicting work ethic at a later age.     

Biopsychosocial Influences That Promote and Impede Social Brain Maturation

ABSTRACT

Social, emotional, and executive function systems of the brain change greatly during adolescence as the result of biopsychosocial influences. These factors alter the course of adolescent behavior through effects on the component processes of social behavior. Specifically, the influences of chronic stress, social and economic adversity, alcohol and drugs, and brain injury as well as parental buffering and support, increased neural connectivity and mentalizing resources, and enriched environments can impede or promote maturation of the social and executive brain networks that regulate social adjustment and emotional expression. Hence, there are many early “windows of opportunity” to affect the biological and neurocognitive foundations of adolescent social executive functions such as empathy, theory of mind, self-monitoring, and social emotions.     

Sex differences in the neural underpinnings of social and monetary incentive processing during adolescence

The brain’s reward system undergoes major changes during adolescence, and an increased reactivity to social and nonsocial incentives has been described as a typical feature during this transitional period. Little is known whether there are sex differences in the brain’s responsiveness to social or monetary incentives during adolescence. The aim of this event-related potential (ERP) study was to compare the neurophysiological underpinnings of monetary and social incentive processing in adolescent boys versus girls. During ERP recording, 38 adolescents (21 females, 17 males; 13–18 years) completed an incentive delay task comprising (a) a reward versus punishment condition and (b) social versus monetary incentives. The stimulus-preceding negativity (SPN) was recorded during anticipation of reward and punishment, and the feedback P3 (fP3) along with the feedback-related negativity (FRN) after reward/punishment delivery. During anticipation of social punishment, adolescent boys compared with girls exhibited a reduced SPN. After delivery, male adolescents exhibited higher fP3 amplitudes to monetary compared with social incentives, whereas fP3 amplitudes in girls were comparable across incentive types. Moreover, whereas in boys fP3 responses were higher in rewards than in punishment trials, no such difference was evident in girls. The results indicate that adolescent boys show a reduced neural responsivity in the prospect of social punishment. Moreover, the findings imply that, once the incentive is obtained, adolescent boys attribute a relatively enhanced motivational significance to monetary incentives and show a relative hyposensitivity to punishment. The findings might contribute to our understanding of sex-specific vulnerabilities to problem behaviors related to incentive processing during adolescence.     

Distress tolerance and early adolescent externalizing and internalizing symptoms: The moderating role of gender and ethnicity

A large body of research has examined the development of internalizing and externalizing symptoms in childhood and early adolescence. Notably, there is significant concomitant impairment associated with early adolescent symptomatology, as well as association of these symptoms with future development of psychopathology, poor physical health, self-destructive thoughts and behaviors, criminal behavior, and HIV risk behaviors. Drawing on negative reinforcement theory, the current study sought to examine the potential role of distress tolerance, defined as the ability to persist in goal-directed activity while experiencing emotional distress, as a potential mechanism that may underlie both internalizing and externalizing symptoms among 231 Caucasian and African American youth (M age = 10.9 years; 45.5% female; 54.5% Caucasian ethnicity). A series of regressions resulted in significant moderated relationships, such that low distress tolerance conferred increased risk for alcohol use among Caucasians, delinquent behavior among African Americans, and internalizing symptoms among females. Clinical implications, including the potential role of negative reinforcement models in early intervention with young adolescents, are discussed.     

Sociological correlates of alienation among adolescent suicide attempts.

The purpose of this research is to assess the relationship between adolescent alienation and a number of sociological factors in a sample adolescent suicide attempts from a northern metropolitan area. First, Dean's alienation scale is employed and the distribution of responses of the adolescent suicide attempts are analyzed. Second a number of sociological variables are examined by means of multiple regression procedures. In the regression analysis, eight variables were found to be statistically significant-in descending order: social contact with peers in the neighborhood, conflict with parents, broken romance, economic status of parents, communication blockage with parents, school performance, stepparents, and broken romance, These variables have been salient in previous research and theorizing about adolescent suicidal behavior. The fact that adolescence, by itself, seems to be a good predictor of whether or not a person will attempt suicide strongly suggests that there is something about the condition of adolescence which underlies this type of behavior. One possibility is that biological maturation is itself the crucial variable. Alternatively, the argument which follows concentrates on a major sociological aspect of adolescence-the adolescent's relative alienation from institutionalized social life. Alienation may be endemic to the period of adolescence.     

The evolutionary basis of risky adolescent behavior: implications for science, policy, and practice

This article proposes an evolutionary model of risky behavior in adolescence and contrasts it with the prevailing developmental psychopathology model. The evolutionary model contends that understanding the evolutionary functions of adolescence is critical to explaining why adolescents engage in risky behavior and that successful intervention depends on working with, instead of against, adolescent goals and motivations. The current article articulates 5 key evolutionary insights into risky adolescent behavior: (a) The adolescent transition is an inflection point in development of social status and reproductive trajectories; (b) interventions need to address the adaptive functions of risky and aggressive behaviors like bullying; (c) risky adolescent behavior adaptively calibrates over development to match both harsh and unpredictable environmental conditions; (d) understanding evolved sex differences is critical for understanding the psychology of risky behavior; and (e) mismatches between current and past environments can dysregulate adolescent behavior, as demonstrated by age-segregated social groupings. The evolutionary model has broad implications for designing interventions for high-risk youth and suggests new directions for research that have not been forthcoming from other perspectives.     

Stuttering and its treatment in adolescence: the perceptions of people who stutter

Adolescence is a complicated phase of maturation during which a great deal of physical, neurological and social development occurs. Clinically this phase is thought to be the last chance to arrest the development of the disorder of stuttering before it becomes chronic in adulthood. However, little treatment development for this age group has occurred. Previous research on the impact of stuttering during adolescence presents a complex picture of apprehension about speaking which does not, however, appear to interfere with social life. The purpose of the present study was to investigate further the experiences of adolescents who stutter with respect to: (1) their experience of stuttering during the adolescent years, (2) reasons for seeking or not seeking therapy during the adolescent years, (3) barriers to seeking therapy during the adolescent years, (4) their experience of therapy during the adolescent years, and finally (5) suggested improvements to therapy for adolescents. Two focus groups and seven individual interviews were conducted with 13 adolescents and young adults. The major finding was a perceived lack of awareness about stuttering by teachers and parents, as well as other adolescents. In addition it appeared that having a stutter was, in itself, not enough reason to seek treatment. However when adolescents did seek treatment, for reasons such as joining the workforce, group therapy was well liked. Educational objectives: The reader will summarize key features that characterize: (1) the complex developmental phase of adolescence, (2) evaluate the experience of stuttering during the adolescent years, (3) discuss the experience of stuttering therapy during the adolescent years, (4) list adolescents' reported barriers to seeking therapy during the adolescent years, and (5) suggest possible ways to improve management of stuttering in adolescence.     

Motivational systems in adolescence: Possible implications for age differences in substance abuse and other risk-taking behaviors

Adolescence is an evolutionarily conserved developmental phase characterized by hormonal, physiological, neural and behavioral alterations evident widely across mammalian species. For instance, adolescent rats, like their human counterparts, exhibit elevations in peer-directed social interactions, risk-taking/novelty seeking and drug and alcohol use relative to adults, along with notable changes in motivational and reward-related brain regions. After reviewing these topics, the present paper discusses conditioned preference and aversion data showing adolescents to be more sensitive than adults to positive rewarding properties of various drugs and natural stimuli, while less sensitive to the aversive properties of these stimuli. Additional experiments designed to parse specific components of reward-related processing using natural rewards have yielded more mixed findings, with reports of accentuated positive hedonic sensitivity during adolescence contrasting with studies showing less positive hedonic affect and reduced incentive salience at this age. Implications of these findings for adolescent substance abuse will be discussed.     

Dopaminergic modulation of incentive motivation in adolescence: age-related changes in signaling, individual differences, and implications for the development of self-regulation

Behavioral activation that is associated with incentive-reward motivation increases in adolescence relative to childhood and adulthood. This quadratic developmental pattern is generally supported by behavioral and experimental neuroscience findings. It is suggested that a focus on changes in dopamine neurotransmission is informative in understanding the mechanism for this adolescent increase in reward-related behavioral activation and subsequent decline into adulthood. Evidence is presented to indicate that incentive-reward motivation is modulated by mesoaccumbens dopamine, and that it increases in adolescence before declining into adulthood because of normative developmental changes at the molecular level. Potential mechanisms of variation in functional mesoaccumbens dopamine transmission are discussed with a focus on the interplay between tonic and phasic modes of dopamine transmission in modulating both general incentive-motivational biases and the efficacy of reward learning during exposure to novel reward experiences. Interactions between individual difference factors and these age-related trends are discussed.     

Unfair treatment and self-regulatory focus

Ample correlational evidence exists that perceived unfair treatment is negatively related to well-being, health, and goal striving but the underlying process is unclear. We hypothesized that effects are due in part to contextual priming of prevention focus and the negative consequences of chronic prevention-focused vigilance. Indeed, reasonable responses to unfair treatment—to avoid situations in which it occurs or if this is not possible, confront it head on—fit prevention self-regulatory focus response patterns. Results from three experiments support this notion. Priming stigmatized social category membership heightened students’ prevention (not promotion) focus (n = 117). Priming non-stigmatized social category membership (i.e., white) did not change prevention focus (n = 46). Priming prevention (not promotion) increased perceptions of unfair treatment (and aroused prevention-relevant fight or flight responses) in response to a negative ambiguous job situation among low and moderate income adults (n = 112).     

Employability: A psycho-social construct, its dimensions, and applications

We examine the idea that an individual’s employability subsumes a host of person-centered constructs needed to deal effectively with the career-related changes occurring in today’s economy. We argue that employability represents a form of work specific (pro)active adaptability that consists of three dimensions—career identity, personal adaptability, and social and human capital. Reciprocal relationships among these dimensions are also discussed. The impact of employability on organizational behavior is illustrated through applications to the research literatures on job loss and job search.     

Adolescent Brain Development and the Risk for Alcohol and Other Drug Problems

Dynamic changes in neurochemistry, fiber architecture, and tissue composition occur in the adolescent brain. The course of these maturational processes is being charted with greater specificity, owing to advances in neuroimaging and indicate grey matter volume reductions and protracted development of white matter in regions known to support complex cognition and behavior. Though fronto-subcortical circuitry development is notable during adolescence, asynchronous maturation of prefrontal and limbic systems may render youth more vulnerable to risky behaviors such as substance use. Indeed, binge-pattern alcohol consumption and comorbid marijuana use are common among adolescents, and are associated with neural consequences. This review summarizes the unique characteristics of adolescent brain development, particularly aspects that predispose individuals to reward seeking and risky choices during this phase of life, and discusses the influence of substance use on neuromaturation. Together, findings in this arena underscore the importance of refined research and programming efforts in adolescent health and interventional needs.     

Adolescents’ Behaviors as Moderators for the Link between Parental Self-Efficacy and Parenting Practices

Based on theory that parents with higher levels of self-efficacy (PSE) should find it easier to parent effectively in the face of challenging child behaviors than should parents with lower levels of PSE, this study examines the link between PSE and parenting using children’s behaviors as potential moderators. Participants were 130 parents who had an older adolescent (M _age?=?17.58) in addition to the target adolescent (M _age?=?11.79), and both adolescents’ externalizing behaviors were used as moderators for the link between PSE and parenting of the target adolescent. Path analysis in Mplus showed that higher PSE was linked to more promotive parenting but only among parents who had an older adolescent with lower levels of externalizing behaviors. Among parents of adolescents with higher levels of externalizing behaviors, whose promotive parenting was significantly lower than other parents overall, PSE did not predict promotive parenting. The link between PSE and parenting did not differ depending on the target adolescents’ behavior. Findings suggest that the link between parents’ beliefs and parenting depends on the broader family context. More specifically, how PSE is linked to parenting practices depends at least partly on the experiences that parents bring from parenting an older adolescent to their interactions with a later-born adolescent. From a clinical perspective, parents might need guidance in how to think about their earlier parenting experiences when parenting a younger adolescent.     

Impaired Fear Recognition and Social Anxiety Symptoms in Adolescence

This study represents the first examination of adolescent anxiety in relation to peer emotion recognition, rather than adult emotion recognition. Additionally, we examine potential mechanisms for the development of social anxiety in females. Facial emotion recognition (FER) is important for accurate social cognition, which is impaired in individuals with various disorders, including anxiety disorders. Social anxiety often onsets during adolescence, is observed more commonly in females, and is often associated with FER difficulties. Given the importance of peer interaction during adolescence, and some evidence that FER may differ as a function of the stimuli (adolescent or adult faces), we sought to study FER in relation to social anxiety symptoms using stimuli portraying adolescent faces. Male and female adolescents (N = 64) completed an online survey in which they rated 257 child and adolescent emotional faces and completed a self-report measure of social anxiety symptoms. We examined differences in emotion recognition (e.g., fear, anger, sadness) between individuals with high and low levels of social anxiety symptoms. Adolescents with high social anxiety symptoms were more likely to have problems correctly identifying fearful expressions (90.55 % accuracy) compared to adolescents with low social anxiety symptoms (96.00 % accuracy; t = 2.375, p = .021, d = 0.594), and this effect was observed exclusively in female adolescents. The observed sex difference in accurate identification of fearful faces in relation to social anxiety could suggest a potential mechanism for social anxiety development in adolescent females.     

Thou shalt not discriminate: How emphasizing moral ideals rather than obligations increases Whites' support for social equality

An important step toward reducing group-based disparities in society is creating support for equality among advantaged group members (e.g., Whites and men). The current research examined how presenting social equality between ethnic groups in terms of moral ideals (i.e., equal treatment) vs. moral obligations (i.e., non-discrimination) affected the attitudes of Whites (students in Study 1, N = 45 and 2, N = 44 and employees in Study 3a, N = 67 and Study 3b, N = 62) toward various social equality issues. It was found that participants in the moral ideals condition reported more activation rather than inhibition tendencies regarding equality (Study 1), were more supportive of affirmative action (Study 2), indicated lower levels of social identity threat, and were more favorable toward cultural diversity which resulted in greater prioritization of equality (Study 3a) than those in the moral obligation condition. These effects did not arise when the ideals/obligations distinction was applied to a nonmoral domain (i.e., competence, Study 3b), underlining the central argument that these processes are specific to morality. The broader theoretical implications for morality and intergroup research are discussed.     

Are adolescents the victims of raging hormones: evidence for activational effects of hormones on moods and behavior at adolescence.

The literatures on hormone changes at adolescence, hormonal influences on moods and behavior in nonhuman animals and adult humans, and mood and behavioral changes at adolescence and the small but burgeoning literature on hormonal influences at adolescence are examined. The focus is on moods and behaviors often identified as typically adolescent (e.g., mood lability, mood intensity, irritability, conflict with parents) and the primary hormones of puberty (i.e., the adrenal androgens, gonadotropins, and sex steroids). Through an integration of these literatures evidence is assessed for specific hormone-mood and hormone-behavior associations, as well as for more general types of hormone-outcome relations that transcend specific hormones or outcomes. Non-biological factors that appear to be important in moderating the role of hormones in adolescent moods and behavior are identified. Implications for the design of future studies in this area are detailed.     

Social Cognition and Interpersonal Impairment in Young Adolescents with ADHD

The purpose of this study is twofold. First, it aims to examine whether the impairment in peer functioning and social-cognitive deficits (i.e., hostile attribution bias, social comprehension, social problem-solving) found in elementary school aged children with ADHD also occur in adolescence. Second, it aims to provide evidence for a predictive relationship between these social-cognitive deficits and an adolescent’s functional impairment in the social domain. To address these aims, several social-cognitive tasks were administered to a small sample of young adolescents with ADHD (N = 27) and a comparison sample without an ADHD diagnosis (N = 18). Parent report of functional impairment and peer sociometric data were also gathered. Comparisons of both parent and peer report of adolescent social functioning suggest that individuals with ADHD continue to experience difficulties with peers into the adolescent years and data from the social-cognitive tasks show evidence of social comprehension and problem-solving deficits. Further analyses indicated a significant link between functional impairment and social cognition. Findings herein are discussed in the context of both the developmental changes that arise during adolescence and consideration of the importance of social cognition for understanding the impaired social functioning experienced by adolescents with ADHD.     

My way: How strategic preferences vary by negotiator role and regulatory focus

Negotiators may use vigilant, loss-minimizing strategies or eager, gain-maximizing strategies. The present study provides evidence that preferences for these different strategies depend on negotiator role and personal orientation. In a price negotiation, buyers and prevention-focused individuals prefer vigilant strategies, whereas sellers and promotion-focused individuals prefer eager strategies. When there is a match between the strategy and the role (role–strategy fit) or between the strategy and the individual's regulatory focus orientation (focus–strategy fit), the negotiator experiences more fit and plans to be more demanding in the negotiation. By manipulating strategy in a real, binding negotiation, we reveal its importance in determining negotiators' subjective experiences and planned demand. Our results show that shared strategic preferences between different motivational orientations—negotiator role and personal regulatory focus—can create self-regulatory compatibility.