Quantitative Developmental Systems Methodology Core

  • United States

Research Output

#Science: The Potential and the Challenges of Utilizing Social Media and Other Electronic Communication Platforms in Health Care

Gijsen, V., Maddux, M., Lavertu, A., Gonzalez-Hernandez, G., Ram, N., Reeves, B., Robinson, T., Ziesenitz, V., Shakhnovich, V. & Altman, R., Jan 1 2020, In : Clinical and Translational Science. 13, 1, p. 26-30 5 p.

Research output: Contribution to journalReview article

Open Access
1 Scopus citations

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

41 Scopus citations

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

8 Scopus citations

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

103 Scopus citations

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. M., 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

9 Scopus citations

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

56 Scopus citations

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

Advances in dynamic factor analysis of psychological processes

Molenaar, P. & Ram, N., Dec 1 2009, Dynamic Process Methodology in the Social and Developmental Sciences. Springer US, p. 255-268 14 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

10 Scopus citations

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

9 Scopus citations

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

72 Scopus citations

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 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

11 Scopus citations

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

6 Scopus citations

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

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

40 Scopus citations

Analytic strategies for the study of adaptation to major life events: Making the most of large-scale longitudinal surveys

Infurna, F. J., Gerstorf, D., Ram, N. & Heckhausen, J., Jan 1 2016, Methodological Issues of Longitudinal Surveys: The Example of the National Educational Panel Study. Springer Fachmedien, p. 19-35 17 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Scopus citations

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

61 Scopus citations

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
3 Scopus citations

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

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

Research output: Contribution to journalArticle

65 Scopus citations

A simulation study of the ability of growth mixture models to uncover growth heterogeneity

Grimm, K. J., Ram, N., Shiyko, M. P. & Lo, L. L., Jan 1 2013, Contemporary Issues in Exploratory Data Mining in the Behavioral Sciences. Taylor and Francis, p. 172-189 18 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Scopus citations

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

17 Scopus citations
50 Scopus citations
86 Scopus citations

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

17 Scopus citations
4 Scopus citations

Between-person disparities in the progression of late-life well-being

Gerstorf, D., Ram, N., Fauth, E., Schupp, J. & Wagner, G. G., 2009, In : Annual Review of Gerontology and Geriatrics. 29, 1, p. 205-232 28 p.

Research output: Contribution to journalReview article

4 Scopus citations

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

23 Scopus citations

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

50 Scopus citations

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

33 Scopus citations

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

6 Scopus citations

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

17 Scopus citations
13 Scopus citations
38 Scopus citations

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

14 Scopus citations

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

3 Scopus citations

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

3 Scopus citations

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

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

Research output: Contribution to journalArticle

4 Scopus citations

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

15 Scopus citations

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

72 Scopus citations

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

1 Scopus citations

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

1 Scopus citations

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

67 Scopus citations

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

25 Scopus citations

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

10 Scopus citations
17 Scopus citations

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. M. & Gerstorf, D., Aug 2019, In : Psychology and aging. 34, 5, p. 625-639 15 p.

Research output: Contribution to journalArticle

Cortical and affective regulation of autonomic coordination

Gatzke-Kopp, L. M., Benson, L., Ryan, P. J. & Ram, N., Jan 1 2020, (Accepted/In press) In : Psychophysiology. e13544.

Research output: Contribution to journalArticle

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

18 Scopus citations

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

19 Scopus citations