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Elizabeth J Susman

Publications and source records attributed to Elizabeth J Susman.

10 recordsLinked to original sources
PubMed2006

Asymmetry between salivary cortisol and alpha-amylase reactivity to stress: relation to aggressive behavior in adolescents.

This study used a multiple physiological systems measurement approach to test the hypothesis that asymmetry between the major components of the psychobiology of stress is associated with atypical behavior in youth [Bauer, A.M., Quas, J.A., Boyce, W.T., 2002. Associations between physiological reactivity and children's behavior: advantages of a multisystem approach. J. Dev. Behav. Pediatr. 23, 102-113]. Adolescents (N=67; ages 10-14; 52% male) provided 2 saliva samples before, and 4 samples after, a modified Trier Social Stress Test (TSST; Kirschbaum, C., Pirke, K., Hellhammer, D.H., 1993. The "Trier Social Stress Test": a tool for investigating psychobiological stress responses in a laboratory setting. Neuropsychobiology 28, 76-81). Samples were assayed for cortisol (C) and alpha-amylase (A-A), a surrogate marker of sympathetic nervous system (SNS) activity. Parents/guardians and adolescents reported on adolescents' aggressive behavior. Both salivary A-A and C increased in response to the TSST, with a peak response for A-A immediately post-TSST and for C 10 min post-TSST. A-A and C stress reactivity were estimated using area under the curve (AUC). Asymmetrical C and A-A reactivity accounted for 7% of the variance in parent-reported adolescent aggression. At lower levels of A-A reactivity, lower C reactivity corresponded to higher aggression ratings, but at high A-A reactivity levels, C reactivity was not related to aggression. These results support the hypothesis of Bauer et al. and underscore the importance of a multiple systems measurement approach in biosocial models of adolescent aggression.

Adolescent↗
PubMed2006

Identifying risk for obesity in early childhood.

OBJECTIVES: Our aim with this study was to assist clinicians by estimating the predictive value of earlier levels of BMI status on later risk of overweight and obesity during the middle childhood and early adolescent years. METHODS: We present growth data from the National Institute of Child Health and Human Development Study of Early Child Care and Youth Development, a longitudinal sample of 1042 healthy US children in 10 locations. Born in 1991, their growth reflects the secular trend of increasing overweight/obesity in the population. Height and weight of participating children in the study were measured at 7 time points. We examined odds ratios for overweight and obesity at age 12 years comparing the frequency with which children did versus did not reach specific BMI percentiles in the preschool- and elementary-age periods. To explore the question of whether and when earlier BMI was predictive of weight status at age 12 years, we used logistic regression to obtain the predicted probabilities of being overweight or obese (BMI > or = 85%) at 12 years old on the basis of earlier BMI. RESULTS: Persistence of obesity is apparent for both the preschool and elementary school period. Children who were ever overweight (> 85th percentile), that is, > or = 1 time at ages 24, 36, or 54 months during the preschool period were > 5 times as likely to be overweight at age 12 years than those who were below the 85th percentile for BMI at all 3 of the preschool ages. During the elementary school period, ages 7, 9, and 11 years, the more times a child was overweight, the greater the odds of being overweight at age 12 years relative to a child who was never overweight. Sixty percent of children who were overweight at any time during the preschool period and 80% of children who were overweight at any time during the elementary period were overweight at age 12 years. Follow-up calculations showed that 2 in 5 children whose BMIs were > or = 50th percentile by age 3 years were overweight at age 12 years. No children who were < 50th percentile for BMI at all points during elementary school were overweight at age 12 years. Children who have higher range BMIs earlier, but not at the 85th percentile, are also more likely to be overweight at age 12 years. Even at time points before and including age 9 years, children whose BMIs are between the 75th and 85th percentile have an approximately 40% to 50% chance of being overweight at age 12 years. Children at 54 months old whose BMIs are between the 50th and 75th percentile are 4 times more likely to be overweight at age 12 years than their contemporaries who are < 50th percentile, and those whose BMIs are between the 75th and 85th percentile are > 6 times more likely to be overweight at age 12 years than those < 50th percentile. CONCLUSIONS: The data from this study indicate that children with BMIs > 85th percentile, as well as with BMIs in the high reference range are more likely than children whose BMI is < 50th percentile to continue to gain weight and reach overweight status by adolescence. Pediatricians can be confident in counseling parents to begin to address the at-risk child's eating and activity patterns rather than delaying in hopes that overweight and the patterns that support it will resolve themselves in due course. Identifying children at risk for adolescent obesity provides physicians with an opportunity for earlier intervention with the goal of limiting the progression of abnormal weight gain that results in the development of obesity-related morbidity.

Adolescent↗
PubMed2005

Psychobiology of persistent antisocial behavior: stress, early vulnerabilities and the attenuation hypothesis.

Stress experienced during the sensitive prenatal, postnatal and early childhood periods of brain development can have damaging consequences for developing biological systems. Stressors imposed by early physical vulnerabilities and an adverse care giving environment is proposed to set in motion early precursors of later persistent antisocial behavior. The purpose of this report is to present an integrated theoretical perspective of potential mechanisms involved in the development of persistent antisocial behavior with an emphasis on early stressors and the neuroendocrinology of stress. The attenuation of endocrine physiology of the stress system is considered a key mechanism involved in persistent antisocial behavior. The amygdala is considered a structure/process linking subjective experiences, emotional learning, brain development and stress physiology. Attenuated cortisol level subsequent to early vulnerabilities is considered a risk marker for persistent antisocial behavior.

Animals↗
PubMed2005

Sleep disturbances and childhood sexual abuse.

OBJECTIVE: This longitudinal, prospective study examined the relationship between childhood sexual abuse and later sleep problems in adolescence while taking into account cooccurring psychopathology that is closely related to sleep disruption [e.g., depression and posttraumatic stress disorder (PTSD)]. METHOD: Sleep disturbances in 147 females (78 sexually abused; 69 comparison) were assessed 10 years after disclosure of substantiated abuse. The follow-up protocol included self-report questions regarding typical sleeping patterns and sleep disturbances as well as measures of depression, PTSD, and lifetime victimization histories. RESULTS: Sleep disturbances correlated significantly with both depression and PTSD. Hierarchical regression analysis showed that sexually abused participants reported significantly greater rates of sleep disturbances than comparison participants above and beyond depression and PTSD. Sleep disturbances were related to revictimization rates independent of sexual abuse, depression, and PTSD. CONCLUSIONS: Assessments of sleep disturbances should be integrated into standard of care for adolescents who have experienced sexual abuse.

Adolescent↗
PubMed2003

Percent body fat at age 5 predicts earlier pubertal development among girls at age 9.

OBJECTIVE: This study examines the causal direction of the relationship between weight status and pubertal timing in girls using a longitudinal sample of 183 white girls followed from ages 5 to 9. METHODS: Girls' weight status (body mass index percentile, percent body fat, waist circumference) was assessed when they were 5, 7, and 9 years old, and their pubertal development was assessed when they were 9 years old (breast development, Estradiol, Pubertal Development Scale). Information from all measures of pubertal development at 9 years was combined to identify girls exhibiting earlier (N = 44) and later (N = 136) pubertal development relative to the sample. Girls' weight status at each age (5, 7, and 9 years old) and change in weight status across the ages of 5 to 9 years were used to predict their pubertal timing at 9 years of age. RESULTS: Girls with higher percent body fat at 5 years, and girls with higher percent body fat, higher BMI percentile, or larger waist circumference at 7 years, were more likely to be classified with earlier pubertal development at 9 years. In addition, girls showing larger increases in percent body fat from 5 to 9 years of age, and larger increases in waist circumference from 7 to 9 years of age, were more likely to exhibit earlier pubertal development at 9 years. Results were still present after controlling for accelerated growth. CONCLUSIONS: Girls with higher weight status in early childhood were more likely to exhibit earlier pubertal development relative to peers at 9 years, indicating that weight status preceded pubertal timing in girls.

Adipose Tissue↗
PubMed2002

The effects of sex steroids on spatial performance: a review and an experimental clinical investigation.

Males typically surpass females in spatial performance, an outcome that may be linked to testosterone and estrogen. The authors (a) review physiological mechanisms, developmental periods, and past empirical work relevant to sex steroids' effects on human spatial performance and (b) report an experimental study of the role of actively circulating sex steroids in adolescents being treated for delayed puberty (N = 55; mean age = 13.70 years). Sex steroids (simulating early, middle, and late puberty) and placebos were given alternately over 21 months and spatial tests were given every 3 months. Spatial performance showed traditional sex differences but did not vary with levels of actively circulating sex steroids.

Adolescent↗
PubMed1985

Child-rearing patterns in depressed, abusive, and normal mothers.

Child-rearing patterns in relation to discipline, emotion regulation, separation-individuation, and level of aspiration differentiated depressed, abusive, and normal mothers. Depressed and abusive mothers both expressed inconsistency, hostility, and protectiveness. Both groups used anxiety and guilt inducing methods but only abusive mothers used them in conjunction with harsh authoritarian practices.

Adult↗
PubMedDate not supplied

Family composition and menarcheal age: anti-inbreeding strategies.

Family composition (e.g., the absence of a father) is associated with pubertal timing in women, although the socioendocrinology of the human primate is poorly understood. To better understand social influences on sexual maturation, retrospective data were collected on menarcheal age and family composition from a sample of approximately 1,938 participants from a college population. Absence of a biological father, the presence of half- and step-brothers, and living in an urban environment were associated with earlier menarche. The presence of sisters in the household while growing up, especially older sisters, was associated with delayed menarche. Menarcheal age was not affected by number of brothers in the household, nor was there an effect of birth order. Body weight and race were also associated with menarche. The present findings advance the literature as they are suggestive of putative human pheromones that modulate sexual maturation to promote gene survival and prevent inbreeding, as occurs in rodents and nonhuman primates.

Adolescent↗
PubMedDate not supplied

Seasonal rhythms of menarche in the United States: correlates to menarcheal age, birth age, and birth month.

PURPOSE: To examine the seasonality of menarche in a large sample of women from the United States. METHODS: Retrospective data were collected on month of birth and menarche, age of menarche, and latitude and altitude of residence from a sample of approximately 3,000 U.S. women from the TREMIN Research Program and from a college student population. RESULTS: Monthly analyses using observed (O) to expected (E) ratios indicated a peak frequency of menarche in July (1.45) and January (1.19) and troughs in February (0.75) and May (0.79). Collapsing the data into seasons also revealed summer and winter peaks. Participants from a younger cohort (born after 1970) had an earlier age of menarche than participants from an older cohort (born before 1970). Older cohort participants also had a more pronounced December-January frequency peak and younger cohort participants had a more pronounced July frequency peak. Older cohort participants exhibited more variability in menarcheal age as a function of menarche month and birth month. Late-maturing participants (>14 years) had a larger December peak of menarche frequencies. Spring-born participants exhibited less seasonality to their menarche. Month of birth was not significantly associated with month of menarche; however, fewer cases than expected occurred 3 months after the birth month and more cases than expected occurred 6 months after the birth month. Age of menarche and monthly distribution of menarche did not vary according to latitude or altitude. CONCLUSIONS: Menarche seasonality is suggested to be a multifactor process mediated by the most prominent seasonal time cue. Attention to these cues that have been hypothesized to contribute to menarche seasonality (e.g., stress or the photoperiod) may have practical implications for women's health, given some of the risks associated with early menarche.

Adolescent↗