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Research Output 2003 2020

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39 Citations (Scopus)

A comparison of modelling and imagery in the acquisition and retention of motor skills

Ram, N., Riggs, S. M., Skaling, S., Landers, D. M. & McCullagh, P., Mar 1 2007, In : Journal of Sports Sciences. 25, 5, p. 587-597 11 p.

Research output: Contribution to journalArticle

Motor Skills
Imagery (Psychotherapy)
Weight Lifting
Research Personnel
7 Citations (Scopus)

A Comparison of Two-Stage Approaches for Fitting Nonlinear Ordinary Differential Equation Models with Mixed Effects

Chow, S. M., Bendezú, J. J., Cole, P. M. & Ram, N., May 3 2016, In : Multivariate Behavioral Research. 51, 2-3, p. 154-184 31 p.

Research output: Contribution to journalArticle

Mixed Effects
Nonlinear Ordinary Differential Equations
Ordinary differential equation
Functional Differential Equations
Model
100 Citations (Scopus)

Acorn mast drives long-term dynamics of rodent and songbird populations

Clotfelter, E. D., Pedersen, A. B., Cranford, J. A., Ram, N., Snajdr, E. A., Nolan, V. & Ketterson, E. D., Dec 1 2007, In : Oecologia. 154, 3, p. 493-503 11 p.

Research output: Contribution to journalArticle

songbird
songbirds
Junco hyemalis
rodent
rodents
8 Citations (Scopus)

Activity diversity and its associations with psychological well-being across adulthood

Lee, S., Koffer, R. E., Sprague, B. N., Charles, S. T., Ram, N. & Almeida, D., Jan 1 2018, In : Journals of Gerontology - Series B Psychological Sciences and Social Sciences. 73, 6, p. 985-995 11 p.

Research output: Contribution to journalArticle

adulthood
well-being
Psychology
Leisure Activities
Exercise
55 Citations (Scopus)

A daily analysis of physical activity and satisfaction with life in emerging adults

Maher, J. P., Doerksen, S. E., Elavsky, S., Hyde, A. L., Pincus, A. L., Ram, N. & Conroy, D. E., Jun 1 2013, In : Health Psychology. 32, 6, p. 647-656 10 p.

Research output: Contribution to journalArticle

Self Concept
Fatigue
Mental Health
Health Behavior
Personality

Adolescents' emotion system dynamics: Network-based analysis of physiological and emotional experience

Yang, X., Ram, N., Lougheed, J. P., Molenaar, P. C. M. & Hollenstein, T., Sep 1 2019, In : Developmental psychology. 55, 9, p. 1982-1993 12 p.

Research output: Contribution to journalArticle

Emotions
emotion
adolescent
experience
system model
9 Citations (Scopus)

A framework for studying mechanisms underlying terminal decline in well-being

Gerstorf, D. & Ram, N., May 4 2015, In : International Journal of Behavioral Development. 39, 3, p. 210-220 11 p.

Research output: Contribution to journalArticle

Empirical Research
Statistical Factor Analysis
well-being
empirical research
factor analysis
72 Citations (Scopus)

Age and time-to-death trajectories of change in indicators of cognitive, sensory, physical, health, social, and self-related functions

Gerstorf, D., Ram, N., Lindenberger, U. & Smith, J., Oct 1 2013, In : Developmental psychology. 49, 10, p. 1805-1821 17 p.

Research output: Contribution to journalArticle

death
mortality
Mortality
Health
health

Age differences in emotion regulation strategy use, variability, and flexibility: An experience sampling approach

Benson, L., English, T., Conroy, D. E., Pincus, A. L., Gerstorf, D. & Ram, N., Sep 1 2019, In : Developmental psychology. 55, 9, p. 1951-1964 14 p.

Research output: Contribution to journalArticle

age difference
Emotions
flexibility
emotion
experience
11 Citations (Scopus)

Age differences in negative emotional responses to daily stressors depend on time since event

Scott, S. B., Ram, N., Smyth, J. M., Almeida, D. M. & Sliwinski, M. J., Jan 1 2017, In : Developmental psychology. 53, 1, p. 177-190 14 p.

Research output: Contribution to journalArticle

age difference
event
Emotions
mood
time
6 Citations (Scopus)

Age-related changes in the dynamics of fear-related regulation in early childhood

Morales, S., Ram, N., Buss, K. A., Cole, P. M., Helm, J. L. & Chow, S. M., Sep 2018, In : Developmental Science. 21, 5, e12633.

Research output: Contribution to journalArticle

Fear
Self-Control

Age-related changes in the relation between preschoolers’ anger and persistence

Ramsook, K. A., Benson, L., Ram, N. & Cole, P. M., Jan 1 2019, (Accepted/In press) In : International Journal of Behavioral Development.

Research output: Contribution to journalArticle

Anger
anger
persistence
Survival Analysis
Emotions
40 Citations (Scopus)

Aging, disablement, and dying: Using time-as-process and time-as-resources metrics to chart late-life change

Ram, N., Gerstorf, D., Fauth, E., Zarit, S. & Malmberg, B., Jan 2010, In : Research in Human Development. 7, 1, p. 27-44 18 p.

Research output: Contribution to journalArticle

Growth
61 Citations (Scopus)

Analyzing Developmental Processes on an Individual Level Using Nonstationary Time Series Modeling

Molenaar, P. C. M., Sinclair, K. O., Rovine, M. J., Ram, N. & Corneal, S. E., Jan 1 2009, In : Developmental psychology. 45, 1, p. 260-271 12 p.

Research output: Contribution to journalArticle

time series
Statistical Models
Nuclear Family
father
Fathers
2 Citations (Scopus)

Analyzing dyadic data using grid-sequence analysis: Interdyad differences in intradyad dynamics

Brinberg, M., Ram, N., Hülür, G., Brick, T. R. & Gerstorf, D., Jan 1 2018, In : Journals of Gerontology - Series B Psychological Sciences and Social Sciences. 73, 1, p. 5-18 14 p.

Research output: Contribution to journalArticle

Open Access
dyad
Sequence Analysis
Emotions
emotion
Happiness
63 Citations (Scopus)

An ensemble heterogeneous classification methodology for discovering health-related knowledge in social media messages

Tuarob, S., Tucker, C. S., Salathe, M. & Ram, N., Jan 1 2014, In : Journal of Biomedical Informatics. 49, p. 255-268 14 p.

Research output: Contribution to journalArticle

Social Media
Health
Classifiers
Learning systems
Experiments
16 Citations (Scopus)

Associations among individuals' perceptions of future time, individual resources, and subjective well-being in old age

Hoppmann, C. A., Infurna, F. J., Ram, N. & Gerstorf, D., Jan 1 2017, In : Journals of Gerontology - Series B Psychological Sciences and Social Sciences. 72, 3, p. 388-399 12 p.

Research output: Contribution to journalArticle

Time Perception
old age
well-being
resources
Retirement
47 Citations (Scopus)
Emotions
Psychopathology
Respiratory Sinus Arrhythmia
Happiness
Anger
82 Citations (Scopus)
Causality
Magnetic Resonance Imaging
Brain
Automatic Data Processing
17 Citations (Scopus)

Behavioral Landscapes and Change in Behavioral Landscapes: A Multiple Time-Scale Density Distribution Approach

Ram, N., Coccia, M., Conroy, D., Lorek, A., Orland, B., Pincus, A., Sliwinski, M. & Gerstorf, D., Jan 1 2013, In : Research in Human Development. 10, 1, p. 88-110 23 p.

Research output: Contribution to journalArticle

Geography
Personality
4 Citations (Scopus)
Individuality
Personality
Sampling Studies
Interpersonal Relations
23 Citations (Scopus)

Body image and first sexual intercourse in late adolescence

Vasilenko, S. A., Ram, N. & Lefkowitz, E. S., Apr 1 2011, In : Journal of Adolescence. 34, 2, p. 327-335 9 p.

Research output: Contribution to journalArticle

Body Image
Coitus
Students
Sexual Behavior
Hispanic Americans
50 Citations (Scopus)

Body mass index, change in body mass index, and survival in old and very old persons.

Dahl, A. K., Fauth, E. B., Ernsth-Bravell, M., Hassing, L. B., Ram, N. & Gerstorf, D., Jan 1 2013, In : Unknown Journal. 61, 4, p. 512-518 7 p.

Research output: Contribution to journalArticle

Body Mass Index
Survival
Mortality
Thinness
Weights and Measures
32 Citations (Scopus)

Boredom Prone or Nothing to Do? Distinguishing Between State and Trait Leisure Boredom and Its Association with Substance Use in South African Adolescents

Weybright, E. H., Caldwell, L. L., Ram, N., Smith, E. A. & Wegner, L., Aug 8 2015, In : Leisure Sciences. 37, 4, p. 311-331 21 p.

Research output: Contribution to journalArticle

leisure and recreation
boredom
boring
adolescent
leisure research
6 Citations (Scopus)

Bursts of Self-Conscious Emotions in the Daily Lives of Emerging Adults

Conroy, D. E., Ram, N., Pincus, A. L. & Rebar, A. L., May 4 2015, In : Self and Identity. 14, 3, p. 290-313 24 p.

Research output: Contribution to journalArticle

Emotions
Guilt
Binomial Distribution
Ego
Social Behavior
17 Citations (Scopus)

Capturing Intraindividual Variation and Covariation Constructs: Using Multiple Time-Scales to Assess Construct Reliability and Construct Stability

Mejía, S., Hooker, K., Ram, N., Pham, T. & Metoyer, R., Apr 2014, In : Research in Human Development. 11, 2, p. 91-107 17 p.

Research output: Contribution to journalArticle

Life Change Events
Human Development
Optimism
12 Citations (Scopus)
Curriculum
Parents
Deceleration
Growth
Research
37 Citations (Scopus)
Social Support
Cognition
social support
disability
Demography
13 Citations (Scopus)

Changes in life satisfaction when losing one's spouse: Individual differences in anticipation, reaction, adaptation and longevity in the German Socio-economic Panel Study (SOEP)

Infurna, F. J., Wiest, M., Gerstorf, D., Ram, N., Schupp, J., Wagner, G. G. & Heckhausen, J., May 1 2017, In : Ageing and Society. 37, 5, p. 899-934 36 p.

Research output: Contribution to journalArticle

SOEP
Spouses
Individuality
spouse
Economics
3 Citations (Scopus)

Changes to sleep-wake behaviors are associated with trajectories of pubertal timing and tempo of secondary sex characteristics

Foley, J. E., Ram, N., Susman, E. J. & Weinraub, M., Oct 1 2018, In : Journal of Adolescence. 68, p. 171-186 16 p.

Research output: Contribution to journalArticle

Sex Characteristics
Sleep
Adrenarche
Endocrine System
Nonlinear Dynamics
2 Citations (Scopus)

Child Effects on Lability in Parental Warmth and Hostility: Moderation by Parents’ Internalizing Problems

Lippold, M. A., Fosco, G. M., Hussong, A. & Ram, N., May 1 2019, In : Journal of youth and adolescence. 48, 5, p. 963-978 16 p.

Research output: Contribution to journalArticle

Hostility
parents
Parents
Parenting
Parent-Child Relations
4 Citations (Scopus)

Children's Sensitivity to Cost and Reward in Decision Making across Distinct Domains of Probability, Effort, and Delay

Kopp, L. M., Ram, N., Lydon-Staley, D. M. & DuPuis, D., Jan 1 2018, In : Journal of Behavioral Decision Making. 31, 1, p. 12-24 13 p.

Research output: Contribution to journalArticle

Reward
reward
Decision Making
decision making
Costs and Cost Analysis
15 Citations (Scopus)

Cognitive dedifferentiation with increasing age and proximity of death: Within-person evidence from the seattle longitudinal study

Hülür, G., Ram, N., Willis, S. L., Warner Schaie, K. & Gerstorf, D., Jun 1 2015, In : Psychology and aging. 30, 2, p. 311-323 13 p.

Research output: Contribution to journalArticle

Aptitude
Longitudinal Studies
Psychology
Research
71 Citations (Scopus)

Cognitive performance inconsistency: Intraindividual change and variability

Ram, N., Stollery, B., Rabbitt, P. & Nesselroade, J. R., Dec 1 2005, In : Psychology and aging. 20, 4, p. 623-633 11 p.

Research output: Contribution to journalArticle

Intelligence
Aptitude
Practice (Psychology)
Recognition (Psychology)
1 Citation (Scopus)

Cohort differences in adult-life trajectories of internal and external control beliefs: A tale of more and better maintained internal control and fewer external constraints

Gerstorf, D., Drewelies, J., Duezel, S., Smith, J., Wahl, H. W., Schilling, O. K., Kunzmann, U., Siebert, J. S., Katzorreck, M., Eibich, P., Demuth, I., Steinhagen-Thiessen, E., Wagner, G. G., Lindenberger, U., Heckhausen, J. & Ram, N., Dec 2019, In : Psychology and aging. 34, 8, p. 1090-1108 19 p.

Research output: Contribution to journalArticle

Internal-External Control
Berlin
Interdisciplinary Studies
Cohort Effect
Health
1 Citation (Scopus)

Cohort differences in cognitive aging: The role of perceived work environment

Hülür, G., Ram, N., Willis, S. L., Warner Schaie, K. & Gerstorf, D., Dec 2019, In : Psychology and aging. 34, 8, p. 1040-1054 15 p.

Research output: Contribution to journalArticle

Observation
Education
Cognitive Aging
Longitudinal Studies
64 Citations (Scopus)

Cohort Differences in Cognitive Aging and Terminal Decline in the Seattle Longitudinal Study

Gerstorf, D., Ram, N., Hoppmann, C., Willis, S. L. & Schaie, K. W., Jul 1 2011, In : Developmental psychology. 47, 4, p. 1026-1041 16 p.

Research output: Contribution to journalArticle

Longitudinal Studies
longitudinal study
Aptitude
Mortality
mortality
24 Citations (Scopus)

Cohorts based on decade of death: No evidence for secular trends favoring later cohorts in cognitive aging and terminal decline in the AHEAD study

Hülür, G., Infurna, F. J., Ram, N. & Gerstorf, D., Aug 13 2013, In : Psychology and aging. 28, 1, p. 115-127 13 p.

Research output: Contribution to journalArticle

Episodic Memory
Mortality
Parturition
Education
Health
10 Citations (Scopus)

Comparing changes in late-life depressive symptoms across aging, disablement, and mortality processes

Fauth, E. B., Gerstorf, D., Ram, N. & Malmberg, B., Jan 1 2014, In : Developmental psychology. 50, 5, p. 1584-1593 10 p.

Research output: Contribution to journalArticle

mortality
Depression
Mortality
death
disability
Psychotherapy
Appointments and Schedules
Outpatients
Arousal
Ecological Momentary Assessment
17 Citations (Scopus)
Variance Decomposition
Smoking
Research Personnel
Physiological Phenomena
Self-efficacy

Control diversity: How across-domain control beliefs are associated with daily negative affect and differ with age

Drewelies, J., Koffer, R. E., Ram, N., Almeida, D. & Gerstorf, D., Aug 1 2019, In : Psychology and aging. 34, 5, p. 625-639 15 p.

Research output: Contribution to journalArticle

Young Adult
Buffers
18 Citations (Scopus)

Daily actigraphy profiles distinguish depressive and interepisode states in bipolar disorder

Gershon, A., Ram, N., Johnson, S. L., Harvey, A. G. & Zeitzer, J. M., Jan 1 2016, In : Clinical Psychological Science. 4, 4, p. 641-650 10 p.

Research output: Contribution to journalArticle

Actigraphy
Bipolar Disorder
Locomotion
Mood Disorders
16 Citations (Scopus)

Daily physical activity and alcohol use across the adult lifespan

Conroy, D. E., Ram, N., Pincus, A. L., Coffman, D. L., Lorek, A. E., Rebar, A. L. & Roche, M. J., Jun 1 2015, In : Health Psychology. 34, 6, p. 653-660 8 p.

Research output: Contribution to journalArticle

Alcohols
Alcohol Drinking
Causality
Artifacts
26 Citations (Scopus)

Daily physical activity and life satisfaction across adulthood

Maher, J. P., Pincus, A. L., Ram, N. & Conroy, D. E., Oct 1 2015, In : Developmental psychology. 51, 10, p. 1407-1419 13 p.

Research output: Contribution to journalArticle

adulthood
Exercise
human being
life-span
satisfaction with life
113 Citations (Scopus)

Decline in Life Satisfaction in Old Age: Longitudinal Evidence for Links to Distance-to-Death

Gerstorf, D., Ram, N., Röcke, C., Lindenberger, U. & Smith, J., Mar 1 2008, In : Psychology and aging. 23, 1, p. 154-168 15 p.

Research output: Contribution to journalArticle

Mortality
Berlin
Cognition
Dementia
Comorbidity
5 Citations (Scopus)

Developmental associations between short-term variability and long-term changes: Intraindividual correlation of positive and negative affect in daily life and cognitive aging

Hülür, G., Hoppmann, C. A., Ram, N. & Gerstorf, D., Jul 1 2015, In : Developmental psychology. 51, 7, p. 987-997 11 p.

Research output: Contribution to journalArticle

cognitive ability
Aptitude
level of education
Berlin
resilience
42 Citations (Scopus)

Developmental Change and Intraindividual Variability: Relating Cognitive Aging to Cognitive Plasticity, Cardiovascular Lability, and Emotional Diversity

Ram, N., Gerstorf, D., Lindenberger, U. & Smith, J., Jun 1 2011, In : Psychology and aging. 26, 2, p. 363-371 9 p.

Research output: Contribution to journalArticle

Berlin
Longitudinal Studies
Cognitive Aging
6 Citations (Scopus)

Developmental dynamics of autonomic function in childhood

Kopp, L. M. & Ram, N., Nov 1 2018, In : Psychophysiology. 55, 11, e13218.

Research output: Contribution to journalArticle

Psychophysiology
Emotions
Demography
Psychology
Peptamen
36 Citations (Scopus)

Development and Lability in the Parent-Child Relationship During Adolescence: Associations With Pubertal Timing and Tempo

Marceau, K., Ram, N. & Susman, E. J., Sep 1 2015, In : Journal of Research on Adolescence. 25, 3, p. 474-489 16 p.

Research output: Contribution to journalArticle

Parent-Child Relations
parent-child relationship
adolescence
parents
National Institute of Child Health and Human Development (U.S.)