Hofer & Alwin, 2008. The future of cognitive aging research: Interdisciplinary perspectives and integrative science.

Hofer, S. M. & Alwin, D. F. (2008). The future of cognitive aging research: Interdisciplinary perspectives and integrative science. In S. M. Hofer and D. F. Alwin (Eds.), Handbook on Cognitive Aging: Interdisciplinary Perspectives (pp. 662-672). Thousand Oaks: Sage Publications.

Year: 
2008
Status: 
complete
Abstract: 

We initiated this project with a set of concerns about the future of cognitive aging research and a determination to raise a number of critical questions about the direction the field of cognitive aging is going. We asked a wide range of questions that we and others believe the field should be asking—including questions about the theoretical perspectives that should be brought to bear on understanding processes of cognitive aging, the current state of our knowledge across the broad spectrum of human abilities and functional capacities, and the kinds of research strategies and measurement approaches that will be needed in future work.

Sliwinski et al,. 2010. Modeling retest and aging effects in a measurement burst design.

Sliwinski, M. J, Hoffman, L., & Hofer, S. M. (2010). Modeling retest and aging effects in a measurement burst design. In P. C. M. Molenaar & K. M. Newell (Eds.), Individual pathways of change: Statistical models for analyzing learning and development (pp. 37-50). Washington DC: American Psychological Association

Year: 
2010
Status: 
complete
Abstract: 

Researchers who study human development are interested in how psychological, physiological, and behavioral phenomena change over time in aging individuals. In fact, Baltes and Nesselroade (1979) identified the primary objective of longitudinal developmental research as the “direct identification of intraindividual change” (p. 23). However, this goal is complicated by the possibility that observable change in any given individual may reflect the joint influences of multiple processes. For example, observable decreases in memory performance over time (i.e., with increasing age) may reflect the complementary effects of declining vascular health and the progression of Alzheimer’s dementia (Sliwinski, Hofer, Hall, Buschke, & Lipton, 2003; Sliwinski, Lipton, Buschke, & Stewart, 1996). In contrast, observable change in cognitive performance may reflect a mixture of competing influences, such as aging-related declines that are partially or completely offset by performance gains attributable to repeated testing (i.e., retest or practice effects). The purpose of this chapter is to examine a novel approach to decompose age (decline) and retest (gains) effects in longitudinal data. Specifically, we argue that conventional longitudinal designs consisting of repeated and widely spaced single measurements are significantly limited in their ability to disentangle multiple time-dependent processes, such as practice gains and age-related declines in cognition. We present an alternative approach that relies on the longitudinal measurement burst design (Nesselroade, 1991) and a nonlinear measurement model that represents cognitive performance as a function of previous experience and latent potential (i.e., asymptotic performance).

Sparks et al., 2011 The impact of health on change in cognitive functioning

Year: 
2011
Status: 
complete
Presentation Citations: 

Sparks, C., Piccinin, A. M., Johansson, B., & Hofer, S.M. (November, 2011). The impact of health on change in cognitive functioning. In S. M. Hofer & D. Kuh (Chairs), The life course determinants of physical, cognitive, and emotional functioning. Symposium conducted at the 64th Annual Scientific Meeting of the Gerontological Society of America, Boston, MA.

Abstract: 

The objectives of this symposium were to evaluate aging-related cognitive change in the context of change in health, and to compare and synthesize patterns of results across multiple longitudinal studies of aging.

Hoffman & Hofer, 2008. Distinguishing The Effects Of Age Cohort And Retest

Year: 
2008
Status: 
complete
Presentation Citations: 

Hoffman, L., & Hofer, S. M. (2008, November). Distinguishing the effects of age, cohort, and retest. Poster presented at the annual Gerontological Society of America Conference, Baltimore, MD.

Variables: 

Hoffman et al., 2008. Individual Differences In Cognitive Decline

Year: 
2008
Status: 
complete
Presentation Citations: 

Hoffman, L., Hofer, S. M., Johansson, B. (2008, November). Individual differences in cognitive decline in persons with and without dementia. Poster presented at the annual Gerontological Society of America Conference, Baltimore, MD.

Bontempo et al., 2009. Health, health trajectories, and “healthy” aging: Issues in the conceptualization and operationalization of health and healthy aging.

Year: 
2009
Status: 
complete
Presentation Citations: 

Bontempo, D. E., Piccinin, A. M., Sparks, C., & Hofer, S. M. (2009, October). Health, health trajectories, and “healthy” aging: Issues in the conceptualization and operationalization of health and healthy aging. Paper presented at the conference on Cognition, Health and Aging, Pennsylvania State University, University Park, PA.

Variables: 

Hofer & Piccinin, 2006. IALSA Central Aims And Approach

Year: 
2006
Status: 
complete
Presentation Citations: 

Hofer, S. M., &, Piccinin, A. M. (2006, April). Integrative analysis of longitudinal studies on aging (IALSA). Paper presented at the Cognitive Aging Conference, Atlanta, GA.

Hofer, S. M., &, Piccinin, A. M. (2006, July). Integrative analysis of longitudinal studies on aging (IALSA). Poster presented at the International Society for the Study of Behavioral Development Meeting, Melbourne, Australia.

Hofer, S. M., & Piccinin, A. M. (2006, October). Integrative Analysis of Longitudinal Studies on Aging (IALSA): A coordinated research protocol for data harmonization and analysis. Paper presented at the annual meeting of the Society for Multivariate Experimental Psychology, Lawrence, KS.

Hofer, S. M., & Piccinin, A. M. (2006, November). Research network for the integrative analysis of longitudinal studies on aging (IALSA): Overview of central aims and approach. In S. M. Hofer & A. M. Piccinin (Chairs), Integrative Analysis of Longitudinal Studies on Aging: Accounting for Health in Aging-Related Processes. Paper symposium conducted at the annual Gerontological Society of America Conference, Dallas, TX.

Hofer, S. M. & Piccinin, A. M. (2008, July). Integrative analysis of longitudinal studies on aging: A coordinated analysis process for cross-validating and extending results on aging-related change. In S. M. Hofer and A. M. Piccinin (Chairs), Integrative Analysis of Longitudinal Studies on Aging (IALSA). Paper symposium conducted at the International Congress of Psychology, Berlin.

Variables: 

Hofer et al., 2007. Identifying processes of within-person change: Design and analysis issues.

Year: 
2007
Status: 
complete
Presentation Citations: 

Hofer, S. M., &, Zimprich, D. (2006, April). Between‑person differentiation and de‑differentation as evidence for correlated longitudinal change. Paper presented at the Cognitive Aging Conference, Atlanta, GA.

Hofer, S. M. (2007, February). Identifying processes of within-person change: Design and analysis issues. In D. Howieson (Chair), Approaches to Defining when Dementia Begins. Paper symposium conducted at the annual International Neurological Society, Portland, Oregon.

Hofer, S. M. (2007, November). Approaches for the early identification of abnormal within-person change. Paper symposium convened at the annual Gerontological Society of America Conference, San Francisco, CA.

Variables: 

Hofer et al., 2005. Change in cognitive functioning relating to age: Results from the octogenarian twin study of aging.

Year: 
2005
Status: 
complete
Presentation Citations: 

Hofer, S. M., Hoffman, L., Piccinin, A. M., & Johansson, B. (2005, November). Correlated and coupled cognitive change: Results from the octogenarian twin study of aging. Paper presented at the annual Gerontological Society of America Meeting, Orlando, FL.

Hoffman, L., Hofer, S. M., Piccinin, A. M., & Johansson, B. (2005, November). Differential change in cognitive functioning relating to age, dementia progression, and time‑to‑death: Results from the Octogenarian Twin Study of Aging. (2005, November). Paper presented at the annual Gerontological Society of America Meeting, Orlando, FL.

Hofer et al., 2006. Conditional inference and applying double-negative-exponential model

Year: 
2006
Status: 
complete
Presentation Citations: 

Hofer, S. M. (2006, November). Conditional inference to populations defined by age and survival: treating mortality-selection as a distinct population process. In N. Ram, D. Gerstorf, & J. R. Nesselroade (Chairs), Innovative Methods for Describing Developmental Change. Paper symposium conducted at the annual Gerontological Society of America Conference, Dallas, TX.

Sliwinski, M. J., Hofer, S. M., & Hoffman, L. (2006, November). Applying a double negative-exponential model to separate short-term practice gains from long-term cognitive decline. In N. Ram, D. Gerstorf, & J. R. Nesselroade (Chairs), Innovative Methods for Describing Developmental Change. Paper symposium conducted at the annual Gerontological Society of America Conference, Dallas, TX.

Abstract: 

Paper symposium chaired by N. Ram, D. Gerstorf, & J. R. Nesselroade, Innovative Methods for Describing Developmental Change. Participants: Hofer, Hoffman, Sliwinski

Variables: 

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