Leipzig University Faculty of Sports Science Institute for Sport Psychology and Sport Pedagogy Jahnallee 59 D-04109 Leipzig

Leipzig University Faculty of Sports Science Institute for Sport Psychology and Sport Pedagogy Jahnallee 59 D-04109 Leipzig E-mail: sabine.schaefer@uni-leipzig.de Tel. : +49 (0) 341 97-31687 Publications Sabine Schäfer

Peer-reviewed journal articles Schaefer, S., Jagenow, D., Verrel, J. & Lindenberger, U. (2015). The influence of cognitive load and walking speed on gait regularity in children and young adults. Gait and Posture, 41, 258-262. Schaefer, S., Schellenbach, M., Lindenberger, U., & Woollacott, M. (2015). Walking in high-risk settings: Do older adults still prioritize gait when distracted by a cognitive task? Experimental Brain Research, 233, 79-88. Schaefer, S. (2014). The ecological approach to dual-task research: Findings on the effects of expertise and age. Frontiers in Psychology, 5, 1-9. Wenger, E., Mårtensson, J., Noack, H., Bodammer, N. C., Kühn, S., Schaefer, S., Heinze, H.-J., Düzel, E., Bäckman, L., Lindenberger, U., & Lövdén, M. (2014). Comparing manual and automatic segmentation of hippocampal volumes: Reliability and validity issues in younger and older brains. Human Brain Mapping, 35, 4236-4248. Riediger, M., Voelkle, M., Schaefer, S. & Lindenberger, U. (2014). Charting the life course: Age differences and validity of beliefs about lifespan development. Psychology and Aging, 29, 503-520. Schaefer, S. & Lindenberger, U. (2013). Thinking while walking: Experienced highheel walkers flexibly adjust their gait. Frontiers in Psychology, 4, 1-7. Wenger, E., Schaefer, S., Noack, H., Kühn, S., Martensson, J., Heinze, H.-J., Düzel, E., Bäckman, L., Lindenberger, U., & Lövdén, M. (2012). Cortical thickness changes following spatial navigation training in adulthood and aging. NeuroImage, 59, 3386-3397. Lövdén, M., Schaefer, S., Noack, H., Bodammer, N. C., Kühn, S., Heinze, H.-J., Düzel, E., Bäckman, L. & Lindenberger, U. (2012). Spatial navigation training protects the hippocampus against age-related changes during early and late adulthood. Neurobiology of Aging, 33, 620.e9-620.e22. Krampe, R. T., Schaefer, S., Lindenberger, U., & Baltes, P. B. (2011). Lifespan changes in multi-tasking: Concurrent walking and memory search in children, young, and older adults. Gait and Posture, 33, 401-405. Schaefer, S. & Schumacher, V. (2011). The interplay of cognitive and motor functioning in healthy older adults: Findings from dual-task studies and suggestions for intervention. Gerontology, 57, 239-246.

Lövdén, M., Schaefer, S., Noack, H., Kanowski, M., Kaufmann, J., Tempelmann, C., Bodammer, N. C., Kühn, S., Heinze, H.-J., Lindenberger, U., Düzel, E. & Bäckman, L. (2011). Performance-related increases in hippocampal N-acetylaspartate (NAA) induced by spatial navigation training are restricted to BDNF val homozygotes. Cerebral Cortex, 21, 1435-1442. Lövdén, M., Bäckman, L., Lindenberger, U., Schaefer, S. & Schmiedek, F. (2010). A theoretical framework for the study of adult cognitive plasticity. Psychological Bulletin, 136, 659-676. Schaefer, S., Lövdén, M., Wieckhorst, B., & Lindenberger, U. (2010). Cognitive performance is improved while walking: Differences in cognitive-sensorimotor couplings between children and young adults. European Journal of Developmental Psychology, 7, 371-389. Verrel, J., Lövdén, M., Schellenbach, M., Schaefer, S., & Lindenberger, U. (2009). Interacting effects of cognitive load and adult age on the regularity of whole-body motion during treadmill walking. Psychology and Aging, 24, 75-81. Huxhold, O., Schäfer, S., & Lindenberger, U. (2009). Wechselwirkungen zwischen Sensomotorik und Kognition im Alter: Überblick über ein internationals Forschungsfeld (Interactions of sensory and cognitive functioning in old age: Overview of an international research topic). Zeitschrift für Gerontologie und Geriatrie, 42, 93-98. Schaefer, S., Krampe, R. Th., Lindenberger, U., & Baltes, P. B. (2008). Age differences between children and young adults in the dynamics of dual-task prioritization: Body (balance) vs. mind (memory). Developmental Psychology, 44, 747-757. Lövdén, M., Schaefer, S., Pohlmeyer, A., & Lindenberger, U. (2008). Walking variability and working memory load in aging: A dual-process account relating cognitive control to motor control performance. Journal of Gerontology: Psychological Science, 63B, P121-P128. Schaefer, S., Huxhold, O., & Lindenberger, U. (2006). Healthy mind in healthy body? A review of sensorimotor-cognitive interdependencies in old age. European Review of Aging and Physical Activity, 3, 45-54.

Book chapters Kray, J. & Schaefer, S. (2012). Mittlere und späte Kindheit (6-11 Jahre) (Middle to late childhood). In W. Schneider & U. Lindenberger (Eds.), Entwicklungspsychologie (7th Edition, pp. 211-234). Weinheim: Beltz. Schaefer, S., Krampe, R. Th., & Lindenberger, U. (2009). Gleichzeitig Balancieren und Denkaufgaben bearbeiten: Altersunterschiede zwischen Kindern und jungen Erwachsenen (Balancing while working on cognitive tasks: Age differences between children and young adults). In V. Nagel & V. Lippens (Eds.), Sportwissenschaft und Sportpraxis: Gleichgewichts-Leistungen im Handlungsbezug. Aktuelle Arbeiten aus der Gleichgewichtsforschung (pp. 13-24). Hamburg: Czwalina-Verlag. Lindenberger, U., & Schaefer, S. (2008). Erwachsenenalter und Alter (Middle and old adulthood). In R. Oerter & L. Montada (Eds.), Entwicklungspsychologie (6. Auflage, pp. 366-409). Weinheim: Beltz. Schaefer, S. & Bäckman, L. (2007). Normales und pathologisches kognitives Altern (Normal and pathological cognitive aging). In J. Brandtstädter & U. Lindenberger (Eds.), Lehrbuch zur Entwicklungspsychologie der Lebensspanne. Stuttgart: Kohlhammer. Conference presentations Schaefer, S., Jagenow, D., Verrel, J. & Lindenberger, U. (2014). Wie beeinflussen kognitive Belastung und Gehgeschwindigkeit die Gangmuster von Kindern und jungen Erwachsenen? Talk at the 49. Kongress der Deutschen Gesellschaft für Psychologie, September 2014, Bochum, Germany. Schaefer, S., Naveh-Benjamin, M., Schellenbach, M. & Lindenberger, U. (2014). Encoding moving objects while walking on a treadmill. Age differences between children, young, and older adults. Talk at the 13th EGREPA Conference as part of the Wingate Congress of Exercise & Sport Sciences, June 2014, Netanya, Israel. Kleemeyer, M., Polk, T., Schaefer, S., Brechtel, L., Krüll, M., & Lindenberger, U. (2014). Training-induced fitness changes correlate with changes in neural distinctiveness in old age. Poster presented at the Organisation of Human Brain Mapping 2014 Annual Meeting, June 2014, Hamburg, Germany.

Kleemeyer, M., Schaefer, S. & Lindenberger, U. (2014). Does aerobic fitness training enhance cognition in old adulthood? First results of a fitness intervention study. Talk at the Cognitive Aging Conference, April 2014, Atlanta, Georgia. Kleemeyer, M., Schaefer, S., & Lindenberger, U. (2014). Wirkt sich ein sportliches Training auf die kognitiven Leistungen älterer Erwachsener aus? Erste Ergebnisse einer Fitnessintervention. Talk at the 2. GEBF-Tagung, March 2014, Frankfurt am Main. Schaefer, S., Kleemeyer, M., & Lindenberger, U. (2013). Does aerobic fitness training enhance cognition in old adulthood? Fist results of a fitness intervention study. Talk at the 21. Tagung der Fachgruppe Entwicklungspsychologie, September 2013, Saarbrücken. Schaefer, S., Schellenbach, M., Lindenberger, U., & Naveh-Benjamin, M. (2013). Altersunterschiede im Enkodieren statischer und bewegter Objekte während des Gehens auf einem Laufband. Talk at the 21. Tagung der Fachgruppe Entwicklungspsychologie, September 2013, Saarbrücken. Kleemeyer, M., Schaefer, S., Lindenberger, U. (2013). Effects of exercise on cognition in older adults: First results from a randomized, controlled intervention. Poster at the 21. Tagung der Fachgruppe Entwicklungspsychologie, September 2013, Saarbrücken. Schaefer, S., Schellenbach, M., Lindenberger, U., & Woollacott, M. (2013). Age differences in heart rate responses to cognitive challenge and postural threat: Findings from a dual-task study. Poster at the 13. European Congress in Psychology, July 2013, Stockholm. Kleemeyer, M., Schaefer, S., & Lindenberger, U. (2013). Effekte eines Ausdauertrainings auf die Kognition älterer Erwachsener: Erste Ergebnisse einer randomisierten und kontrollierten Studie. Talk at the Sportmotorik-Tagung, March 2013, Stuttgart. Schaefer, S., Woollacott, M. Schellenbach, M., & Lindenberger, U. (2013). Körperliche Fitness und kognitive Leistungen zeigen bei älteren Erwachsenen einen stärkeren Zusammenhang als bei Kindern und jungen Erwachsenen. Poster at the Sportmotorik-Tagung, March 2013, Stuttgart. Kleemeyer, M., Schaefer, S. & Lindenberger, U. (2012). Effects of physical activity on the senescent brain and cognition. Poster presented at the workshop New directions in brain training: Effectiveness, methodology, and application of cognitive interventions, October 2012, Berlin.

Schaefer, S., Woollacott, M., Schellenbach, M., & Lindenberger, U. (2012). Körperliche Fitness und kognitive Leistungen zeigen bei älteren Erwachsenen einen stärkeren Zusammenhang als bei Kindern und jungen Erwachsenen. Poster presented at the 48. Kongress der Deutschen Gesellschaft für Psychologie, September 2012, Bielefeld. Jagenow, D., Schaefer, S., Verrel, J., Schellenbach, M., & Lindenberger, U. (2010). Kinder stabilisieren ihren Gang während der Bearbeitung einer leichten kognitiven Aufgabe. Talk at the 42. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie, May 2010, Salzburg. Schaefer, S. & Lindenberger, U. (2010). Erfahrene und unerfahrene Stöckelschuhträgerinnen zeigen einen stabileren Gang unter kognitiver Belastung. Poster at the 42. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie, May 2010, Salzburg. Jagenow, D., Schaefer, S., Verrel, J., Schellenbach, M., & Lindenberger, U. (2010). Children stabilize their gait when working on an easy cognitive task: Principal component analyses of gait. Poster presented at the Experimental Psychology Society Workshop on Body Representation, March 2010, London. Maleika, D., Schaefer, S., Schellenbach, M., & Lindenberger, U. (2010). Effects of dual-tasking on cognitive control and walking regularity in children. Poster presented at the Experimental Psychology Society Workshop on Body Representation, March 2010, London. Schaefer, S. & Lindenberger, U. (2010). Experienced and inexperienced high-heel walkers adopt a more conservative gait when cognitively challenged. Poster presented at the 3rd International Congress on Gait and Mental Function, February 2010, Washington, DC. Schaefer, S., Maleika, D., Schellenbach, M. & Lindenberger, U. (2009). Das Wechselspiel von Gehen und Denken im Kindesalter: Altersunterschiede zwischen 7- und 10-jährigen. Poster at the 19. Tagung der Fachgruppe Entwicklungspsychologie, September 2009, Hildesheim. Maleika, D., Schaefer, S., Schellenbach, M. & Lindenberger, U. (2009). Kinder profitieren nicht immer vom Gehen während der Bearbeitung kognitiver Aufgaben: Einfluss der Umgebung. Talk at the 41. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie, May 2009, Leipzig. Schaefer, S., Wieckhorst, B., Pohlmeyer, A., Lövdén, M. & Lindenberger, U. (2009). Kinder und junge Erwachsene profitieren vom Gehen während der Bearbeitung

kognitiver Aufgaben. Talk at the 41. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie, May 2009, Leipzig. Schaefer, S., Krampe, R. Th. & Lindenberger, U. (2009). Gleichzeitig Gehen und Denkaufgaben bearbeiten: Atersunterschiede zwischen Kindern und jungen Erwachsenen. Talk at the Tagung der dvs-sektion Sportmotorik, January 2009, Darmstadt. Schaefer, S., Riediger, M., Li, S.-C., & Lindenberger, U. (2008). Lifespan age differences in monitoring and selecting task difficulty. Talk at the XXIXth International Congress of Psychology, July 2008, Berlin. Schaefer, S., Riediger, M., Li, S.-C., & Lindenberger, U. (2008). Lifespan age differences in monitoring and selecting task difficulty: The concept of selection margins. Poster presented at the 20th Biennial ISSBD Meeting, July 2008, Würzburg. Schaefer, S., Lövdén, M., Wieckhorst, B., Pohlmeyer, A., Verrel, J., & Lindenberger, U. (2007). Performing a working memory task while walking on a treadmill: Lifespan differences in cognitive-sensorimotor dual-task dynamics. Poster presented at the XVIIIth Meeting of the International Society for Posture and Gait Research, July 2007, Burlington, Vermont. Verrel, J., Lövdén, M., Pohlmeyer, A., Schaefer, S., & Lindenberger, U. (2007). Adult age-specific and age-general effects of cognitive load on the regularity of whole-body coordination in dual-tasked walking. Talk at the XVIIIth Meeting of the International Society for Posture and Gait Research, July 2007, Burlington, Vermont. Schaefer, S. (2007). Motorische Testverfahren und kognitionstheoretischer Ansatz. Talk at the Forschungsgespräch Bewegung, June 2007, Berlin. Schaefer, S. & Lindenberger, U. (2007). Der Zusammenhang von Bewegung und kognitiven Funktionen im Alter. Talk at the 39. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie (ASP), May 2007, Munich. Verrel, J., Lövdén, M., Pohlmeyer, A., Schaefer, S., & Lindenberger, U. (2007). Adult age-specific and age-general effects of cognitive task difficulty on the regularity of whole-body motion during treadmill walking. Poster presented at the European Workshop on Movement Science, May 2007, Amsterdam. Schaefer, S., Riediger, M., Li, S.-C., & Lindenberger, U. (2007). Lifespan changes in monitoring and selecting task difficulty: The concept of selection margins. Poster presented at the Workshop Conflicts as Signals in Cognitive Systems, May 2007, Berlin.

Schaefer, S., Lövdén, M., Pohlmeyer, A., Wieckhorst, B., & Lindenberger, U. (2006). Veränderung von Gangparametern unter kognitiver Belastung über die Lebensspanne. Talk at the 45. Kongress der Deutschen Gesellschaft für Psychologie, September 2006, Nürnberg. Lövdén, M., Schaefer, S., Pohlmeyer, A., & Lindenberger, U. (2006). Adult age differences in stride-to-stride variability are modified by working-memory load. Poster presented at the Cognitive Aging Conference, April 2006, Atlanta, Georgia. Wieckhorst, B., Schaefer, S., Lövdén, M., & Lindenberger, U. (2006). How working memory load affects gait: Differences in cognitive-sensorimotor couplings between children and adults. Poster presented at The International Congress on Gait and Mental Function: The Interplay between Walking, Behavior and Cognition, February 2006, Madrid. Pohlmeyer, A., Lövdén, M., Schaefer, S., & Lindenberger, U. (2006). Adult age differences in spatio-temporal gait parameters are shaped by working-memory load. Poster presented at The International Congress on Gait and Mental Function: The Interplay between Walking, Behavior and Cognition, February 2006, Madrid. Schaefer, S., Krampe, R. T., & Lindenberger, U. (2006). Comparing children and young adults in cognitive-sensorimotor dual-tasking: Evidence for adaptive resource allocation in children. Poster presented at The International Congress on Gait and Mental Function: The Interplay between Walking, Behavior and Cognition, February 2006, Madrid. Krampe, R. T., Schaefer, S., & Schmiedek, F. (2005). Random-Walk Analyses of Postrue Control: Lifespan Changes. Talk at the 58th Annual Scientific Meeting of the Gerontological Society of America, November 2005, Orlando, Florida. Schmiedek, F., Krampe, R. T., Schaefer, S. & Lindenberger, U. (2005). Sensomotorik und Kognition: Multivariate Strukturanalysen interinidvidueller Unterschiede über die Lebensspanne. Talk at the 17. Tagung der Fachgruppe Entwicklungspsychologie, September 2005, Bochum. Schaefer, S., Krampe, R. T., & Lindenberger, U. (2005). Bearbeiten kognitiver Aufgaben während des Balancierens: Kinder verbessern ihre Balanceleistung unter Doppelaufgabenbedingungen. Talk at the 17. Tagung der Fachgruppe Entwicklungspsychologie, September 2005, Bochum. Schaefer, S., Krampe, R. T. & Baltes, P. B. (2005). Concurrent cognitive and balance performance: Children improve balancing under dual-task conditions. Talk at the XIIth European Conference on Developmental Psychology, August 2005, La Laguna, Teneriffa.

Schaefer, S. (2005). Age-related changes in brain activation in an episodic memory task: A lifespan approach. Talk at the 6th Schloessmann Seminar on Cognitive Neuroscience of Human Ontogeny, June 2005, Dölln, Germany. Schaefer, S., Krampe, R. T., & Lindenberger, U. (2005). Concurrent cognitive and sensorimotor performance: Children improve balancing under dual-task conditions. Poster presented at the Expert Meeting on Cognitive Developmental Neuroscience, April 2005, Amsterdam. Schaefer, S., Krampe, R. T., & Baltes, P. B. (2004). Balance und Gedächtnis: Kosten gleichzeitiger Anforderungen bei 9- und 11-jährigen und Erwachsenen. Talk at the 44. Kongress der Deutschen Gesellschaft für Psychologie, September 2004, Göttingen. Gronostaj, A., Schaefer, S., & Krampe, R. T. (2004). Physical and academic selfconcepts and dual-task performance: A comparison of children and young adults. Poster presented at the Third International Biennial SELF Research Conference, July 2004, Berlin. Schaefer, S., Krampe, R. T., & Baltes, P. B. (2004). Age-differences in cognitive and sensorimotor dual-task costs comparing children and young adults. Poster presented at the International Society for the Study of Behavioural Development (ISSBD) 18th Biennial Meeting, July 2004, Ghent. Paulus, F., Bergner, S., Promberger, J., Schaefer, S., Rünger, D. & Lindenberger, U. (2003). Die Regulation von Handlungssequenzen bei pharmakotherapeutisch behandelten Kindern mit Aktivitäts- und Aufmerksamkeitsstörung (ADHS). Poster presented at 16. Tagung der Fachgruppe Entwicklungspsychologie, September 2003, Mainz. Schaefer, S. & Krampe, R. Th. (2003). Doppelaufgabenkosten in kognitivsensomotorischen Aufgaben- ein Vergleich zwischen Kindern und jungen Erwachsenen. Poster presented at 16. Tagung der Fachgruppe Entwicklungspsychologie, September 2003, Mainz. Schaefer, S, & Krampe, R. Th. (2003). Dual-task costs in walking while memorizing: a comparison of children and young adults. Talk at the XIth European Conference on Developmental Psychology, August 2003, Milan. Schaefer, S. & Krampe, R. Th. (2002). Gehen und Denken- Doppelaufgabenkosten in kognitiv-sensomotorischen Aufgaben bei Kindern und jungen Erwachsenen. Poster presented at 43. Kongress der Deutschen Gesellschaft für Psychologie, September 2002, Berlin.

Li, K.Z.H., Schaefer, S. & Lindenberger, U. (2001). Sequential Action Regulation in children, young, and older adults. Poster presented at The Royal Netherlands Academy of Arts and Sciences colloquium: The control of cognitive processes, June 2001, Amsterdam. Li, K.Z.H., Schaefer, S. & Lindenberger, U. (2000). Altersunterschiede in der Regulation von Handlungssequenzen. Talk at the 42. TeaP (Treffen experimentell arbeitender Psychologen), April 2000, Braunschweig