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Papers by LillyBelle Deer

Brain, Behavior, & Immunity - Health, 2021

Overweight and obesity constitute the fifth leading cause of preventable deaths worldwide. One pa... more Overweight and obesity constitute the fifth leading cause of preventable deaths worldwide. One pathway through which excess weight contributes to poor health outcomes is via inflammatory activity and changes in cognitive processes. Prior theory has proposed a vicious cycle whereby obesity potentiates inflammatory activity, which alters cognitive processes such as working memory, which in turn leads to a reduced ability to self-regulate and therefore manage weight. However, to date no longitudinal studies have examined this potential dynamic. In the current study, we addressed this gap by assessing the relations among fat mass, C-reactive protein (CRP), and working memory across time in a large sample of 8536 children followed through adolescence in the Avon Longitudinal Study of Parents and Children in the United Kingdom. Adiposity was quantified via dual emission x-ray absorptiometry (DEXA) at ages 9 and 15.5 years old, and inflammatory activity was indexed via circulating serum C-...

Development and Psychopathology, 2020

Parents serve important functions in regulating children's responses to stress and challenge.... more Parents serve important functions in regulating children's responses to stress and challenge. However, the parental characteristics that modulate the effectiveness of parents as stress buffers remain to be fully characterized. To address this gap, this study examined parental characteristics and behaviors that may explain variation in parents’ ability to buffer cortisol responses to acute stress of 180 children (ages 9–11 years old, M = 9.9 years, SD = .58). Children were randomly assigned to either participate in a public speaking task, the Trier Social Stress Test – modified for children (TSST-M) or a control condition. Children in the TSST-M condition were randomly assigned to prepare for the public speaking task either with their parent (N = 59) or alone (N = 60), whereas 61 children were assigned to the control condition (no TSST-M). We found that parental education moderated the effect of condition on children's responses to acute stress. Children whose parents had low...

Recently, expert testimony in sexual assault trials shifted from an emphasis on Rape Trauma Syndr... more Recently, expert testimony in sexual assault trials shifted from an emphasis on Rape Trauma Syndrome (RTS) to Posttraumatic Stress Disorder (PTSD) and experts have tied these diagnoses either loosely or tightly to the victim’s condition following sexual assault. In the current study, 326 jury-eligible adults completed a survey on Amazon Mechanical Turk in which they read a synopsis of a sexual assault trial and an expert testimony with either RTS, PTSD or neither; along with either no, loose, or tight links made between the diagnosis and the victim’s condition. There was no main effect of diagnosis label but testimony linkage did have an effect on verdicts. Women gave more guilty verdicts due to their lower levels of Rape Myth Acceptance (RMA), and the effect of gender partially depended on RMA. Implications for how expert testimony can affect defendants’ and plaintiffs’ credibility are discussed. EXPERT TESTIMONY IN SEXUAL ASSAULT TRIALS 3

This study utilized data from the Avon Longitudinal Study of Parents and Children (N = 14,860) to... more This study utilized data from the Avon Longitudinal Study of Parents and Children (N = 14,860) to examine whether early-life family income (age 0-5) predicted long-term academic achievement (age 16-18) and to investigate the role of executive function (EF) assessed multiple times across age 7-11 in explaining this association. Task-based EF was a significant mediator between early-life family income and later academic achievement in every model. This mediating pathway persisted when adjusting for a comprehensive panel of covariates including verbal IQ, sex, family income at ages 8 and 18, and early-life temperament. Additionally, teacher-rated and parent-rated EF mediated in some models. Overall, these findings suggest that childhood EF may play an important role in perpetuating income-based educational disparities.

Development and Psychopathology

Racial/ethnic minorities are more vulnerable to mental and physical health problems, but we know ... more Racial/ethnic minorities are more vulnerable to mental and physical health problems, but we know little about the psychobiological underpinnings of these disparities. In this study, we examined racial/ethnic differences in cortisol diurnal patterns and affect as initial steps toward elucidating long-term health disparities. A racially/ethnically diverse (39.5% White, 60.5% minority) sample of 370 adolescents (57.3% female) between the ages of 11.9 and 18 years (M = 14.65 years, SD = 1.39) participated in this study. These adolescents provided 16 cortisol samples (4 samples per day across 4 days), allowing the computation of diurnal cortisol slopes, the cortisol awakening response, and diurnal cortisol output (area under the curve), as well as daily diary ratings of high-arousal and low-arousal positive and negative affect. Consistent with prior research, we found that racial/ethnic minorities (particularly African American and Latino youth) exhibited flatter diurnal cortisol slopes ...

Psychology Public Policy and Law

Brain, Behavior, & Immunity - Health, 2021

Overweight and obesity constitute the fifth leading cause of preventable deaths worldwide. One pa... more Overweight and obesity constitute the fifth leading cause of preventable deaths worldwide. One pathway through which excess weight contributes to poor health outcomes is via inflammatory activity and changes in cognitive processes. Prior theory has proposed a vicious cycle whereby obesity potentiates inflammatory activity, which alters cognitive processes such as working memory, which in turn leads to a reduced ability to self-regulate and therefore manage weight. However, to date no longitudinal studies have examined this potential dynamic. In the current study, we addressed this gap by assessing the relations among fat mass, C-reactive protein (CRP), and working memory across time in a large sample of 8536 children followed through adolescence in the Avon Longitudinal Study of Parents and Children in the United Kingdom. Adiposity was quantified via dual emission x-ray absorptiometry (DEXA) at ages 9 and 15.5 years old, and inflammatory activity was indexed via circulating serum C-...

Development and Psychopathology, 2020

Parents serve important functions in regulating children's responses to stress and challenge.... more Parents serve important functions in regulating children's responses to stress and challenge. However, the parental characteristics that modulate the effectiveness of parents as stress buffers remain to be fully characterized. To address this gap, this study examined parental characteristics and behaviors that may explain variation in parents’ ability to buffer cortisol responses to acute stress of 180 children (ages 9–11 years old, M = 9.9 years, SD = .58). Children were randomly assigned to either participate in a public speaking task, the Trier Social Stress Test – modified for children (TSST-M) or a control condition. Children in the TSST-M condition were randomly assigned to prepare for the public speaking task either with their parent (N = 59) or alone (N = 60), whereas 61 children were assigned to the control condition (no TSST-M). We found that parental education moderated the effect of condition on children's responses to acute stress. Children whose parents had low...

Recently, expert testimony in sexual assault trials shifted from an emphasis on Rape Trauma Syndr... more Recently, expert testimony in sexual assault trials shifted from an emphasis on Rape Trauma Syndrome (RTS) to Posttraumatic Stress Disorder (PTSD) and experts have tied these diagnoses either loosely or tightly to the victim’s condition following sexual assault. In the current study, 326 jury-eligible adults completed a survey on Amazon Mechanical Turk in which they read a synopsis of a sexual assault trial and an expert testimony with either RTS, PTSD or neither; along with either no, loose, or tight links made between the diagnosis and the victim’s condition. There was no main effect of diagnosis label but testimony linkage did have an effect on verdicts. Women gave more guilty verdicts due to their lower levels of Rape Myth Acceptance (RMA), and the effect of gender partially depended on RMA. Implications for how expert testimony can affect defendants’ and plaintiffs’ credibility are discussed. EXPERT TESTIMONY IN SEXUAL ASSAULT TRIALS 3

This study utilized data from the Avon Longitudinal Study of Parents and Children (N = 14,860) to... more This study utilized data from the Avon Longitudinal Study of Parents and Children (N = 14,860) to examine whether early-life family income (age 0-5) predicted long-term academic achievement (age 16-18) and to investigate the role of executive function (EF) assessed multiple times across age 7-11 in explaining this association. Task-based EF was a significant mediator between early-life family income and later academic achievement in every model. This mediating pathway persisted when adjusting for a comprehensive panel of covariates including verbal IQ, sex, family income at ages 8 and 18, and early-life temperament. Additionally, teacher-rated and parent-rated EF mediated in some models. Overall, these findings suggest that childhood EF may play an important role in perpetuating income-based educational disparities.

Development and Psychopathology

Racial/ethnic minorities are more vulnerable to mental and physical health problems, but we know ... more Racial/ethnic minorities are more vulnerable to mental and physical health problems, but we know little about the psychobiological underpinnings of these disparities. In this study, we examined racial/ethnic differences in cortisol diurnal patterns and affect as initial steps toward elucidating long-term health disparities. A racially/ethnically diverse (39.5% White, 60.5% minority) sample of 370 adolescents (57.3% female) between the ages of 11.9 and 18 years (M = 14.65 years, SD = 1.39) participated in this study. These adolescents provided 16 cortisol samples (4 samples per day across 4 days), allowing the computation of diurnal cortisol slopes, the cortisol awakening response, and diurnal cortisol output (area under the curve), as well as daily diary ratings of high-arousal and low-arousal positive and negative affect. Consistent with prior research, we found that racial/ethnic minorities (particularly African American and Latino youth) exhibited flatter diurnal cortisol slopes ...

Psychology Public Policy and Law