Paul B. Baltes (18 June 1939 – 7 November 2006) was a German developmental psychologist who researched life-span development and aging. He is credited with developing theories about lifespan-development, successful aging, and wisdom, and the "selective optimization with compensation theory" of compensating decline in aging by focussing on strengths. He has been described by American Psychologist as one of the most influential developmental psychologists.Nesseroade, J: page 696, American Psychologist, 62, 2007
Biography Paul B. Baltes was born in Saarlouis, Germany. He is credited with developing theories about lifespan and wisdom, the selective optimization with compensation theory, and theories about successful aging and developing. He received his doctorate from the University of Saarbrücken (Saarland, Germany) in 1967. After, Baltes spent 12 years at several American institutions as a professor of psychology and human development before returning to Germany in 1980. He was Director of the Center of Lifespan Psychology at the Max Planck Institute for Human Development, Berlin, Professor of Psychology at the Free University of Berlin, and Distinguished Professor of Psychology at the University of Virginia. At the Max Planck Institute for Human Development he founded the Berlin Wisdom Project and became a leader in the scientific study of wisdom. Baltes later became the director of the Max Planck International Research Network on Aging.Baltes, Paul B. (2006). Lifespan development and the brain. Cambridge, UK: Cambridge University Press.
He was a founding member of the European Academy of Sciences, a member of the Berlin-Brandenburg Academy of Sciences, and a member and vice-president of the Deutsche Akademie der Naturforscher Leopoldina. Paul Baltes also became a member of the Order Pour le mérite for scientists and artists and a foreign member of the American Academy of Arts and Sciences and the Royal Swedish Academy of Sciences.
As to research and theory, Baltes was interested in advancing a life-span view of human ontogenesis that considers behavioral and cognitive functioning from childhood into old age using a family of perspectives that together specify a coherent metatheoretical view on the nature of development. Other substantive topics included work on historical cohort effects, cognitive development, a dual-process conception of lifespan intelligence, and the study of wisdom. His interests also included models of successful development and the cross-cultural comparative study of self-related agency beliefs in the context of child development and school performance. Together with his late wife, Margret Baltes, he proposed a systemic metatheory of ontogeny which characterizes lifespan development as the orchestration of three processes: selection, optimization, and compensation.
Baltes was active in various national and international organizations including the US Social Science Research Council (where he served as chair of the Board of Directors from 1996 until 2000), the German-American Academy Council, the Berlin-Brandenburg Academy of Sciences, and the European Academy of Science. Regarding interdisciplinarity, Baltes was engaged primarily in two projects: he chaired (together with Karl Ulrich Mayer) the Berlin Aging Study and, together with the Sociologist Neil Smelser, he was co-editor-in-chief of the 26-volume International Encyclopedia of the Social and Behavioral Sciences (Elsevier) which appeared in 2001.
Baltes was the author or editor of 18 books and more than 250 scholarly articles and chapters. For his work, he was honored with numerous awards including honorary doctorates and election as foreign member of the American Academy of Arts and Sciences and the Royal Swedish Academy of Sciences, and in 2000 to the German order Pour le mérite of Science and the Arts.
He died at home in Berlin of pancreatic cancer in 2006.Smith, J. (2007). In memory of Paul B. Baltes. International Society for the Study of Behavioural Development (ISSBD) Newsletter, 2(52), 38.
Life-Span Developmental Psychology
Overview Life-span psychology can be defined as the exploration of biological, cognitive, and psychosocial changes and constancies that occur throughout the course of life.Baltes, P. (1987). Theoretical propositions of life-span developmental psychology: On the dynamics between growth and decline. Developmental Psychology, 23(5), 611-626. It has been presented as a theoretical perspective, proposing several fundamental, theoretical, and methodological principles about the nature of human development. An attempt by researchers has been made to examine whether research on the nature of development suggests a specific metatheoretical worldview. Several beliefs, taken together, form the “family of perspectives” that contribute to this particular view. Baltes argues there are seven key features which affect human development across the life span, namely: (1) development occurs across one's entire life, (2) multidirectionality and multidimensionality, (3) development as growth and decline, (4) the role plasticity plays in development, (5) the influence of socio-cultural condition on development, (6) the interactions of age-graded, history-graded, and nonnormative historical influences on development, and (7) the multidisciplinary nature of human development.
Lifelong Development Lifelong development involves the idea that development is not completed in adulthood; it encompasses the entire life span, from conception to death. The study of development traditionally focused almost exclusively on the changes occurring from conception to adolescence and the gradual decline in old age. It was believed that the five or six decades after adolescence yielded little to no developmental change at all. The current view reflects the possibility that specific changes in development can occur later in life, without having been established at birth. The early events of one's childhood can be transformed by later events in one's life. This belief clearly emphasizes that all stages of the life span equally contribute in the regulation of the nature of human development; no age period holds supremacy over another. Many diverse patterns of change such as direction, timing, and order can vary among individuals and affect the ways in which they develop. As individuals move through life, they are faced with many challenges, opportunities, and situations that “give direction, force, and substance to their development”.
Multidimensionality and Multidirectionality Baltes states that multidimensionality and multidirectionality are characteristics of human development. By multidimensionality, Baltes is referring to the fact that a complex interplay of factors, both endogenous and exogenous, influence development across the lifespan. Baltes argues that a dynamic interaction of these factors is what influences an individual's development. As a result, certain factors may have a more powerful effect on a particular domain than another factor. Regardless, Baltes stresses that not one single criterion determines the development of a domain. The second part of the proposition referring to multidirectionality, Baltes states that the development of a particular domain does not occur in a strictly linear fashion that increases towards functional efficacy of a particular modality. A concept fundamental to multidirectionality is the changes between fluid and crystallized intelligence. Crystallized intelligence involves the pragmatics of intelligence, that is what knowledge and context are related in being able to apply the mechanics of intelligence (fluid). The fluid "mechanics" of intelligence refers to the brain's basic architecture in problem solving and information processing. Baltes created his model of Multidrectional and Multidimensional intelligence (see 1987 article, p. 615) to describe this concept utilizing crystallized and fluid intelligence which he credits as having been the most developed research across the entire lifespan. Rather development can be characterized as having the capacity for both an increase and decrease in efficacy over the course of an individual's life. As a result, the development of various domains is multidirectional in nature.
The developmental process occurring between childhood and adolescence known as puberty illustrates Baltes’ principle of multidimensionality and multidirectionality. Puberty is described as a period of “rapid morphological body changes; including physical growth and hormonal changes, as well as a myriad psychological and social contextual changes.”Lerner, R.M., & Steinberg, L. (Eds.) (2009). Handbook of adolescent psychology, Volume 1: Individual bases of adolescent development (3rd Ed.). Hoboken, NJ: John Wiley & Sons, Inc. The types of morphological changes associated with puberty include the development of primary and secondary sex characteristics, alterations in height and weight, fluctuations in hormonal levels, along with several other changes.Shirtcliff, E.A., Dahl, R.E., & Pollak, S.D. (2009). Pubertal Development: Correspondence between Hormonal Development. Child Development, 80(2), 327-337. Psychological changes during adolescence involve a broad range of experiences individuals encounter over this period of dynamic changes; including the development of advanced cognitive faculties such as abstraction and other adult cognitive processes, new emotions, along with other psychosocial changes.Keulers, E.H.H., Evers, E.A.T., Stiers, P., & Jolles, J. (2010). Age, Sex, and Pubertal Phase Influence Mentalizing About Emotions and Actions in Adolescent. Developmental Neuropsychology, 35(5), 555-569. The fact that the term puberty encompasses such a broad range of domains illustrates the multidimensionality component of the overarching concept. The concept of puberty is also multidirectional as individual domains may both improve or decline in levels of effectiveness. Self-regulation is one domain of puberty which undergoes profound multidirectional changes during the adolescent period. During childhood, individuals have difficulty effectively regulating their actions and impulsive behaviors.Yurgelun-Todd, D.A., & Killgore, W.D. (2006). Fear-related activity in the prefront cortex increases with age during adolescence: a preliminary fMRI study. Neuroscience Letters, 406(3), 194-199. Scholars have noted that this lack of effective regulation often results in children engaging in behaviors without fully considering the consequences of one's actions. Over the course of puberty, neuronal changes attempt to deal with this unregulated behavior by increasing one's ability to regulate emotions and impulses. Inversely, the ability for adolescents to engage in spontaneous activity and creativity, both domains commonly associated with impulse behavior, decreases over the adolescent period in response to changes in cognition. In the end, neuronal changes to the limbic system and prefrontal cortex which are associated with puberty lead to the development of self-regulation, and the ability to consider the consequences of one's actions.
Development as Gain/Loss