Valerie S Knopik
Biographic Data
| ID | 4491159 |
|---|---|
| NAME | Valerie S Knopik |
| GIVEN NAMES | Valerie S |
| FAMILY NAME | Knopik |
| SIGNATURE | KNOPIK V S |
| AFFILIATIONS | Purdue University West Lafayette |
| ORCID | 0000-0002-5727-0576 |
| VERIFIED | Yes |
| TOTAL WORKS | 18 |
| TOTAL CITATIONS | 3 |
| AUTHOR COUNT | 18 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1996 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 1 |
Longitudinal Associations Between Other-Sex Close Friends and Alcohol Use is a Between-, Not Within-, Person Process
BACKGROUND: Adolescents are more likely to use alcohol if close friends are characterized as majority other-sex. The extent to which the association between proportion of other-sex close friends and adolescent alcohol use is directional and/or reciprocal is unclear. Although evidence is mixed for male adolescents, higher proportion of other-sex close friends is associated with increased risk of alcohol use for female adolescents. METHODS: a multi…
A Moderated Mediation Model to Predict Adolescent Resistance to Peer Influence: Evidence From an Adoption Study
Introduction Adolescents are particularly susceptible to peer influence and at higher risk of engaging in problematic behaviors through peer interactions, but also vary in the extent to which they are influenced by their peers. Resistance to peer influence, the tendency to refuse undesired peer pressure, is one key factor for this variation. However, how genetic and contextual influences shape the development of RPI remain unclear. Methods The pr…
Unifying human development and family science: Navigating identity challenges in higher education
Co-Guest editors Ramona Faith Oswald and Anisa Zvonkovic invited us to comment on the article by Dyer (2024) in the special issue, Theorizing Academia: Critical and Futuristic Perspectives. In her article, Dyer, as a faculty member at a highly regarded teaching-focused state university, offers her perspective on how Human Development and Family Science evolved from Home Economics. We agree with many of Dyer's thoughts, but our perspective deviate…
Maternal smoking during pregnancy is associated with DNA methylation in early adolescence: A sibling comparison design
Maternal smoking during pregnancy (MSDP) may impact offspring biological (e.g., deoxyribonucleic acid methylation [DNAm]) and behavioral (e.g., attention-deficit/hyperactivity disorder hyperactive/impulsive [ADHD-HI] symptoms) development. There has been consistency in findings of differential methylation in global DNAm, and the specific genes AHRR, CYP1A1, CNTNAP2, MYO1G, and GFI1 in relation to MSDP. The current study aims to (a) replicate the …
Developmental pathways linking obesity risk and early puberty: The thrifty phenotype and fetal overnutrition hypotheses
Polygenic Influences on Pubertal Timing and Tempo and Depressive Symptoms in Boys and Girls
This study used polygenic scoring ( PGS ) to test whether puberty‐related genes were correlated with depressive symptoms, and whether there were indirect effects through pubertal maturation. The sample included 8,795 adolescents from the Avon Longitudinal Study of Parents and Children (measures of puberty drawn ages 8–17 years; of depressive symptoms at age 16.5 years). The PGS (derived from a genome‐wide meta‐analysis of later age at menarche) p…
The Effect of Smoking during Pregnancy on Severity and Directionality of Externalizing and Internalizing Symptoms: A Genetically Informed Approach
The objective was to examine the association between maternal smoking during pregnancy (SDP) and (I) severity and (II) directionality of externalizing and internalizing symptoms in a sample of sibling pairs while rigorously controlling for familial confounds. The Missouri Mothers and Their Children Study is a family study (N = 173 families) with sibling pairs (aged 7 to 16 years) who are discordant for exposure to SDP. This sibling comparison stu…
Developmental Pathways from Genetic, Prenatal, Parenting and Emotional/Behavioral Risk to Cortisol Reactivity and Adolescent Substance Use: A TRAILS Study
Inhibitory control in siblings discordant for exposure to maternal smoking during pregnancy
Maternal smoking during pregnancy (SDP) has been linked to poorer offspring executive function across development, but SDP does not occur independent of other familial risk factors. As such, poor and inconsistent control for potential confounds, notably shared familial (i.e., genetic and environmental) confounds, preclude concluding causal effects of SDP on child outcomes. We examined the within-family association between SDP and one component of…
A genetic marker of risk in HIV-infected individuals with a history of hazardous drinking
Impulsivity and sensation seeking have been linked to hazardous drinking, increased sexual risk behaviors, and lower treatment adherence among persons living with HIV (PLH). The dopamine active transporter1 (DAT1or SLC6A3) gene has been linked to impulsivity and sensation seeking in several populations but has not been investigated among populations of PLH. This study used data from 201 PLH who report a recent history of heavy episodic drinking. …
Top 10 Replicated Findings From Behavioral Genetics
In the context of current concerns about replication in psychological science, we describe 10 findings from behavioral genetic research that have replicated robustly. These are “big” findings, both in terms of effect size and potential impact on psychological science, such as linearly increasing heritability of intelligence from infancy (20%) through adulthood (60%). Four of our top 10 findings involve the environment, discoveries that could have…
Behavioral Genetics: Psychological Perspectives
Further Investigation of Genetics and Intimate Partner Violence
We thank Drs. Abbey, Bennett, DeWall, and Way for making truly outstanding points in their thoughtful commentaries. We agree with the feedback and advice from all of these distinguished scientists. Future work on genetics and intimate partner violence (IPV) should, when possible, include a larger number of genetic variants, closely examine gene by environment interactions, and study potential mechanisms explaining the connection between genetics …
Genetic Associations With Intimate Partner Violence in a Sample of Hazardous Drinking Men in Batterer Intervention Programs
The etiology of intimate partner violence (IPV) is multifactorial. However, etiological theories of IPV have rarely included potential genetic factors. The purpose of the present study was to examine whether a cumulative genetic score (CGS) containing the monoamine oxidase A (MAOA) and the human serotonin transporter gene linked polymorphism (5-HTTLPR) was associated with IPV perpetration after accounting for the effects of alcohol problems, drug…
Behavioral Genetics
OPRM1 and Diagnosis-Related Posttraumatic Stress Disorder in Binge-Drinking Patients Living with HIV
Genetic and environmental influences on rapid naming and reading ability: A twin study
Gender differences in cognitive abilities of opposite-sex and same-sex twin pairs with reading disabilty
Unifying human development and family science: Navigating identity challenges in higher education
Co-Guest editors Ramona Faith Oswald and Anisa Zvonkovic invited us to comment on the article by Dyer (2024) in the special issue, Theorizing Academia: Critical and Futuristic Perspectives. In her article, Dyer, as a faculty member at a highly regarded teaching-focused state university, offers her perspective on how Human Development and Family Science evolved from Home Economics. We agree with many of Dyer's thoughts, but our perspective deviate…
Genetic Associations With Intimate Partner Violence in a Sample of Hazardous Drinking Men in Batterer Intervention Programs
The etiology of intimate partner violence (IPV) is multifactorial. However, etiological theories of IPV have rarely included potential genetic factors. The purpose of the present study was to examine whether a cumulative genetic score (CGS) containing the monoamine oxidase A (MAOA) and the human serotonin transporter gene linked polymorphism (5-HTTLPR) was associated with IPV perpetration after accounting for the effects of alcohol problems, drug…
Gender differences in cognitive abilities of opposite-sex and same-sex twin pairs with reading disabilty
Genetic and environmental influences on rapid naming and reading ability: A twin study
OPRM1 and Diagnosis-Related Posttraumatic Stress Disorder in Binge-Drinking Patients Living with HIV
Behavioral Genetics
Further Investigation of Genetics and Intimate Partner Violence
We thank Drs. Abbey, Bennett, DeWall, and Way for making truly outstanding points in their thoughtful commentaries. We agree with the feedback and advice from all of these distinguished scientists. Future work on genetics and intimate partner violence (IPV) should, when possible, include a larger number of genetic variants, closely examine gene by environment interactions, and study potential mechanisms explaining the connection between genetics …
Genetic Associations With Intimate Partner Violence in a Sample of Hazardous Drinking Men in Batterer Intervention Programs
The etiology of intimate partner violence (IPV) is multifactorial. However, etiological theories of IPV have rarely included potential genetic factors. The purpose of the present study was to examine whether a cumulative genetic score (CGS) containing the monoamine oxidase A (MAOA) and the human serotonin transporter gene linked polymorphism (5-HTTLPR) was associated with IPV perpetration after accounting for the effects of alcohol problems, drug…
Behavioral Genetics: Psychological Perspectives
Top 10 Replicated Findings From Behavioral Genetics
In the context of current concerns about replication in psychological science, we describe 10 findings from behavioral genetic research that have replicated robustly. These are “big” findings, both in terms of effect size and potential impact on psychological science, such as linearly increasing heritability of intelligence from infancy (20%) through adulthood (60%). Four of our top 10 findings involve the environment, discoveries that could have…
A genetic marker of risk in HIV-infected individuals with a history of hazardous drinking
Impulsivity and sensation seeking have been linked to hazardous drinking, increased sexual risk behaviors, and lower treatment adherence among persons living with HIV (PLH). The dopamine active transporter1 (DAT1or SLC6A3) gene has been linked to impulsivity and sensation seeking in several populations but has not been investigated among populations of PLH. This study used data from 201 PLH who report a recent history of heavy episodic drinking. …
Inhibitory control in siblings discordant for exposure to maternal smoking during pregnancy
Maternal smoking during pregnancy (SDP) has been linked to poorer offspring executive function across development, but SDP does not occur independent of other familial risk factors. As such, poor and inconsistent control for potential confounds, notably shared familial (i.e., genetic and environmental) confounds, preclude concluding causal effects of SDP on child outcomes. We examined the within-family association between SDP and one component of…
Polygenic Influences on Pubertal Timing and Tempo and Depressive Symptoms in Boys and Girls
This study used polygenic scoring ( PGS ) to test whether puberty‐related genes were correlated with depressive symptoms, and whether there were indirect effects through pubertal maturation. The sample included 8,795 adolescents from the Avon Longitudinal Study of Parents and Children (measures of puberty drawn ages 8–17 years; of depressive symptoms at age 16.5 years). The PGS (derived from a genome‐wide meta‐analysis of later age at menarche) p…
The Effect of Smoking during Pregnancy on Severity and Directionality of Externalizing and Internalizing Symptoms: A Genetically Informed Approach
The objective was to examine the association between maternal smoking during pregnancy (SDP) and (I) severity and (II) directionality of externalizing and internalizing symptoms in a sample of sibling pairs while rigorously controlling for familial confounds. The Missouri Mothers and Their Children Study is a family study (N = 173 families) with sibling pairs (aged 7 to 16 years) who are discordant for exposure to SDP. This sibling comparison stu…
Developmental Pathways from Genetic, Prenatal, Parenting and Emotional/Behavioral Risk to Cortisol Reactivity and Adolescent Substance Use: A TRAILS Study
Developmental pathways linking obesity risk and early puberty: The thrifty phenotype and fetal overnutrition hypotheses
Maternal smoking during pregnancy is associated with DNA methylation in early adolescence: A sibling comparison design
Maternal smoking during pregnancy (MSDP) may impact offspring biological (e.g., deoxyribonucleic acid methylation [DNAm]) and behavioral (e.g., attention-deficit/hyperactivity disorder hyperactive/impulsive [ADHD-HI] symptoms) development. There has been consistency in findings of differential methylation in global DNAm, and the specific genes AHRR, CYP1A1, CNTNAP2, MYO1G, and GFI1 in relation to MSDP. The current study aims to (a) replicate the …
A Moderated Mediation Model to Predict Adolescent Resistance to Peer Influence: Evidence From an Adoption Study
Introduction Adolescents are particularly susceptible to peer influence and at higher risk of engaging in problematic behaviors through peer interactions, but also vary in the extent to which they are influenced by their peers. Resistance to peer influence, the tendency to refuse undesired peer pressure, is one key factor for this variation. However, how genetic and contextual influences shape the development of RPI remain unclear. Methods The pr…
Unifying human development and family science: Navigating identity challenges in higher education
Co-Guest editors Ramona Faith Oswald and Anisa Zvonkovic invited us to comment on the article by Dyer (2024) in the special issue, Theorizing Academia: Critical and Futuristic Perspectives. In her article, Dyer, as a faculty member at a highly regarded teaching-focused state university, offers her perspective on how Human Development and Family Science evolved from Home Economics. We agree with many of Dyer's thoughts, but our perspective deviate…
Longitudinal Associations Between Other-Sex Close Friends and Alcohol Use is a Between-, Not Within-, Person Process
BACKGROUND: Adolescents are more likely to use alcohol if close friends are characterized as majority other-sex. The extent to which the association between proportion of other-sex close friends and adolescent alcohol use is directional and/or reciprocal is unclear. Although evidence is mixed for male adolescents, higher proportion of other-sex close friends is associated with increased risk of alcohol use for female adolescents. METHODS: a multi…
Psychology (15 works) · Developmental psychology (10 works) · Biology (8 works) · Clinical Psychology (8 works) · Medicine (6 works) · Psychiatry (6 works) · Clinical Psychology (5 works) · Genetics (5 works) · Cognition (4 works) · Cognitive Abilities and Testing (4 works)