Grant S Shields
Dados Biográficos
| ID | 1663065 |
|---|---|
| NOME | Grant S Shields |
| PRENOMES | Grant S |
| SOBRENOME | Shields |
| ASSINATURA | SHIELDS G S |
| AFILIAÇÕES | University of California, Davis |
| ORCID | 0000-0002-0827-4669 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 19 |
| TOTAL DE CITAÇÕES | 16 |
| TOTAL COMO AUTOR | 19 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2015 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 2 |
Distinguishing the Attentional Mechanisms of Distinct Mindfulness States
Lifetime Stressor Exposure Profiles and Trait Risk for Substance Use in Young Adults
Background: Substance use severity is shaped by a range of developmental and psychological factors, including the timing of stressor exposure across the lifespan. Previous research identified early-life stressor exposure as a factor in this progression, but emerging research has suggested the importance of considering the timing of stressor exposure across development. Objectives: Here, we tested whether distinct profiles of stressor exposure—in …
To mask, or not to mask
The COVID-19 pandemic disrupted society for years. Much evidence shows face masks reduced the spread of the virus; nonetheless, many individuals stopped wearing masks before recommendations (or even mandates) for their use ended. Although predictors of mask wearing have been explored, this preregistered, exploratory study was the first to examine psychological predictors of changes in mask wearing over the course of the pandemic. In particular, w…
Lifetime Stressor Severity and Diurnal Cortisol in Older African American Adults
Multiple theoretical models have been proposed to explain how stressor exposure across the life course relates to the functioning of the hypothalamic‐pituitary‐adrenal (HPA) axis, as indexed by daily cortisol secretion. However, this association remains understudied in African Americans. The present study tested three competing models of stressor severity across the lifespan and diurnal cortisol secretion in a sample of 203 older African American…
Stress, positive affect, and sleep in older African American adults
BACKGROUND: Although sleep disparities contribute to racial health disparities, little is known about factors affecting sleep among African Americans. One such factor may be positive affect, which could impact sleep directly (direct effect hypothesis) or indirectly by buffering the effects of stress (stress buffering hypothesis). PURPOSE: We tested the direct effect and stress buffering effects of positive affect on sleep at three levels (day, we…
Neonatal Hair Cortisol and Birth Outcomes
OBJECTIVE: Prenatal stress physiology is often posited as a predictor of birth outcomes, including gestational age at birth and birthweight. However, research has predominantly relied on indicators in the maternal system, with few studies examining hormones of the fetal system. The current study focuses on fetal cortisol in the third trimester, as measured in neonatal hair, as a biological factor that might be associated with birth outcomes (gest…
Neural correlates underlying preference changes induced by food Go/No-Go training
Effects of Early Life Adversity on Pubertal Timing and Tempo in Black and White Girls
Screening for early life abuse may help address health disparities related to earlier pubertal timing
Associations between lifetime stress exposure, race, and first-birth intendedness in the United States
This study examined how lifetime stress exposure and race are associated with first-birth intendedness, and whether these associations differ based on stress exposure timing. Greater lifetime stress exposure was related to increased first-birth intendedness for black women but was unrelated or even associated with decreased first-birth intendedness for white women, depending on stress exposure timing. These effects were robust while controlling f…
Cumulative lifetime stress exposure predicts greater impulsivity and addictive behaviors
The study investigated whether lifetime stress exposure is associated with greater impulsivity and addictive behavior. We also examined whether stress and impulsivity interactively predicted food addiction and alcohol-related behavior. Greater lifetime stress exposure was related to more impulsivity and food addictive behaviors, but not alcohol-related consequences. There were no interactions between lifetime stress exposure and impulsivity in pr…
Assessing Lifetime Stress Exposure Using the Stress and Adversity Inventory for Adults (Adult STRAIN)
OBJECTIVE: Numerous theories have proposed that acute and chronic stressors may exert a cumulative effect on life-span health by causing biological "wear and tear," or allostatic load, which in turn promotes disease. Very few studies have directly tested such models, though, partly because of the challenges associated with efficiently assessing stress exposure over the entire life course. To address this issue, we developed the first online syste…
Feel free to write this down
Acute stress impairs working memory (i.e., the ability to update and keep information in mind). Although that effect is well established, the boundaries around it are not. In particular, little is known about how recalling an unresolved stressor might influence working memory, or about how stress-or recalling a stressful event-influences the processes underlying working memory task performance (e.g., sustained/controlled attention vs. capacity). …
The effects of acute stress on episodic memory
A growing body of research has indicated that acute stress can critically impact memory. However, there are a number of inconsistencies in the literature, and important questions remain regarding the conditions under which stress effects emerge as well as basic questions about how stress impacts different phases of memory. In this meta-analysis, we examined 113 independent studies in humans with 6,216 participants that explored effects of stress …
The effects of acute stress on core executive functions
The effect of negative affect on cognition
It is often assumed that negative affect impairs the executive functions that underlie our ability to control and focus our thoughts. However, support for this claim has been mixed. Recent work has suggested that different negative affective states like anxiety and anger may reflect physiologically separable states with distinct effects on cognition. However, the effects of these 2 affective states on executive function have never been assessed. …
Stress-related changes in personality
Effects of lifetime stress exposure on mental and physical health in young adulthood
To examine risk and resilience factors that affect health, lifetime stress exposure histories, dispositional forgiveness levels, and mental and physical health were assessed in 148 young adults. Greater lifetime stress severity and lower levels of forgiveness each uniquely predicted worse mental and physical health. Analyses also revealed a graded Stress × Forgiveness interaction effect, wherein associations between stress and mental health were …
Anxiety, not anger, induces inflammatory activity
Psychological stressors reliably trigger systemic inflammatory activity as indexed by levels of proinflammatory cytokines. This experiment demonstrates that one's specific emotional reaction to a stressor may be a significant determinant of whether an inflammatory reaction occurs in response to that stressor. Based on extant correlational evidence and theory, a causal approach was used to determine whether an avoidant emotion (anxiety) triggers m…
Avoidance-related EEG asymmetry predicts circulating interleukin-6
Recent research has linked avoidance-oriented motivational states to elevated pro-inflammatory cytokine levels. According to one of many theories regarding the association between avoidance and cytokine levels, because the evolutionarily basic avoidance system may be activated when an organism is threatened or overwhelmed, an associated inflammatory response may be adaptive for dealing with potential injury in such threatening situations. To exam…
Effects of lifetime stress exposure on mental and physical health in young adulthood
To examine risk and resilience factors that affect health, lifetime stress exposure histories, dispositional forgiveness levels, and mental and physical health were assessed in 148 young adults. Greater lifetime stress severity and lower levels of forgiveness each uniquely predicted worse mental and physical health. Analyses also revealed a graded Stress × Forgiveness interaction effect, wherein associations between stress and mental health were …
Cumulative lifetime stress exposure predicts greater impulsivity and addictive behaviors
The study investigated whether lifetime stress exposure is associated with greater impulsivity and addictive behavior. We also examined whether stress and impulsivity interactively predicted food addiction and alcohol-related behavior. Greater lifetime stress exposure was related to more impulsivity and food addictive behaviors, but not alcohol-related consequences. There were no interactions between lifetime stress exposure and impulsivity in pr…
Anxiety, not anger, induces inflammatory activity
Psychological stressors reliably trigger systemic inflammatory activity as indexed by levels of proinflammatory cytokines. This experiment demonstrates that one's specific emotional reaction to a stressor may be a significant determinant of whether an inflammatory reaction occurs in response to that stressor. Based on extant correlational evidence and theory, a causal approach was used to determine whether an avoidant emotion (anxiety) triggers m…
Avoidance-related EEG asymmetry predicts circulating interleukin-6
Recent research has linked avoidance-oriented motivational states to elevated pro-inflammatory cytokine levels. According to one of many theories regarding the association between avoidance and cytokine levels, because the evolutionarily basic avoidance system may be activated when an organism is threatened or overwhelmed, an associated inflammatory response may be adaptive for dealing with potential injury in such threatening situations. To exam…
The effects of acute stress on core executive functions
The effect of negative affect on cognition
It is often assumed that negative affect impairs the executive functions that underlie our ability to control and focus our thoughts. However, support for this claim has been mixed. Recent work has suggested that different negative affective states like anxiety and anger may reflect physiologically separable states with distinct effects on cognition. However, the effects of these 2 affective states on executive function have never been assessed. …
Stress-related changes in personality
Effects of lifetime stress exposure on mental and physical health in young adulthood
To examine risk and resilience factors that affect health, lifetime stress exposure histories, dispositional forgiveness levels, and mental and physical health were assessed in 148 young adults. Greater lifetime stress severity and lower levels of forgiveness each uniquely predicted worse mental and physical health. Analyses also revealed a graded Stress × Forgiveness interaction effect, wherein associations between stress and mental health were …
The effects of acute stress on episodic memory
A growing body of research has indicated that acute stress can critically impact memory. However, there are a number of inconsistencies in the literature, and important questions remain regarding the conditions under which stress effects emerge as well as basic questions about how stress impacts different phases of memory. In this meta-analysis, we examined 113 independent studies in humans with 6,216 participants that explored effects of stress …
Assessing Lifetime Stress Exposure Using the Stress and Adversity Inventory for Adults (Adult STRAIN)
OBJECTIVE: Numerous theories have proposed that acute and chronic stressors may exert a cumulative effect on life-span health by causing biological "wear and tear," or allostatic load, which in turn promotes disease. Very few studies have directly tested such models, though, partly because of the challenges associated with efficiently assessing stress exposure over the entire life course. To address this issue, we developed the first online syste…
Feel free to write this down
Acute stress impairs working memory (i.e., the ability to update and keep information in mind). Although that effect is well established, the boundaries around it are not. In particular, little is known about how recalling an unresolved stressor might influence working memory, or about how stress-or recalling a stressful event-influences the processes underlying working memory task performance (e.g., sustained/controlled attention vs. capacity). …
Cumulative lifetime stress exposure predicts greater impulsivity and addictive behaviors
The study investigated whether lifetime stress exposure is associated with greater impulsivity and addictive behavior. We also examined whether stress and impulsivity interactively predicted food addiction and alcohol-related behavior. Greater lifetime stress exposure was related to more impulsivity and food addictive behaviors, but not alcohol-related consequences. There were no interactions between lifetime stress exposure and impulsivity in pr…
Effects of Early Life Adversity on Pubertal Timing and Tempo in Black and White Girls
Screening for early life abuse may help address health disparities related to earlier pubertal timing
Associations between lifetime stress exposure, race, and first-birth intendedness in the United States
This study examined how lifetime stress exposure and race are associated with first-birth intendedness, and whether these associations differ based on stress exposure timing. Greater lifetime stress exposure was related to increased first-birth intendedness for black women but was unrelated or even associated with decreased first-birth intendedness for white women, depending on stress exposure timing. These effects were robust while controlling f…
Neural correlates underlying preference changes induced by food Go/No-Go training
Neonatal Hair Cortisol and Birth Outcomes
OBJECTIVE: Prenatal stress physiology is often posited as a predictor of birth outcomes, including gestational age at birth and birthweight. However, research has predominantly relied on indicators in the maternal system, with few studies examining hormones of the fetal system. The current study focuses on fetal cortisol in the third trimester, as measured in neonatal hair, as a biological factor that might be associated with birth outcomes (gest…
To mask, or not to mask
The COVID-19 pandemic disrupted society for years. Much evidence shows face masks reduced the spread of the virus; nonetheless, many individuals stopped wearing masks before recommendations (or even mandates) for their use ended. Although predictors of mask wearing have been explored, this preregistered, exploratory study was the first to examine psychological predictors of changes in mask wearing over the course of the pandemic. In particular, w…
Lifetime Stressor Severity and Diurnal Cortisol in Older African American Adults
Multiple theoretical models have been proposed to explain how stressor exposure across the life course relates to the functioning of the hypothalamic‐pituitary‐adrenal (HPA) axis, as indexed by daily cortisol secretion. However, this association remains understudied in African Americans. The present study tested three competing models of stressor severity across the lifespan and diurnal cortisol secretion in a sample of 203 older African American…
Stress, positive affect, and sleep in older African American adults
BACKGROUND: Although sleep disparities contribute to racial health disparities, little is known about factors affecting sleep among African Americans. One such factor may be positive affect, which could impact sleep directly (direct effect hypothesis) or indirectly by buffering the effects of stress (stress buffering hypothesis). PURPOSE: We tested the direct effect and stress buffering effects of positive affect on sleep at three levels (day, we…
Distinguishing the Attentional Mechanisms of Distinct Mindfulness States
Lifetime Stressor Exposure Profiles and Trait Risk for Substance Use in Young Adults
Background: Substance use severity is shaped by a range of developmental and psychological factors, including the timing of stressor exposure across the lifespan. Previous research identified early-life stressor exposure as a factor in this progression, but emerging research has suggested the importance of considering the timing of stressor exposure across development. Objectives: Here, we tested whether distinct profiles of stressor exposure—in …
Psychology (14 obras) · Clinical Psychology (8 obras) · Developmental psychology (8 obras) · Medicine (8 obras) · Stress Responses and Cortisol (8 obras) · Cognition (6 obras) · Stressor (6 obras) · Psychiatry (5 obras) · Cognitive psychology (4 obras) · Internal Medicine (4 obras)